31. Lower vehicle. Refer to Lifting and Jacking the Vehicle in SI.2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # NHTSA10V223000 Date: 100524
Recall 10V223000: ECM Software Update
VEHICLE MAKE/MODEL: MODEL YEAR(S):
Cadillac/SRX 2010
MANUFACTURER: General Motors Corp.
MFR'S REPORT DATE: May 24, 2010
NHTSA CAMPAIGN ID NUMBER: 10V223000
NHTSA ACTION NUMBER: N/A
COMPONENT: Engine and Engine Cooling
POTENTIAL NUMBER OF UNITS AFFECTED: 547
SUMMARY:
General Motors is recalling certain model year 2010 Cadillac SRX equipped with a 2.8L V6 engine. If low octane (regular) fuel is used in the
vehicle instead of the required high octane (premium) fuel as stated in the owner manual and on the fuel filler door, the combination of regular fuel
usage and aggressive driving maneuvers may induce pre-ignition. If pre-ignition occurs, you may hear a pinging or knocking sound from the
engine.
CONSEQUENCE:
If the vehicle continues to be driven after the onset of this noise, a connecting rod or piston may break, resulting in engine damage, and perhaps
engine failure, which would disable the vehicle increasing the risk of a crash.
REMEDY:
Dealers will reprogram the engine control module free of charge. The safety recall is expected to begin on or before June 11, 2010. Owners may
contact The Cadillac Customer Assistance Center at 1-866-982-2339 or at The Owner Center at www.gmownercenter.com.
NOTES:
Owners may also contact The National Highway Traffic Safety Administration's Vehicle Safety Hotline at 1-888-327-4236 (TTY
Friday, December 20, 2019
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 999
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 998
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 998
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 997
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 997
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
Thursday, December 19, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 996
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 996
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123E
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123E
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 995
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 994
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 994
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 993
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 993
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123D
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123D
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 992
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 992
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 991
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 991
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 990
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 990
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123C
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123C
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 99
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 99
DTC B0021 04
- Passenger Side Seat Air Bag Deployment Loop Open Circuit
DTC B0021 0D
- Passenger Side Seat Air Bag Deployment Loop Resistance Above Threshold
DTC B0021 0E
- Passenger Side Seat Air Bag Deployment Loop Resistance Below Threshold
DTC B0022 01
- RF Pretensioner Deployment Loop Short to Battery
DTC B0022 02
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Short to Ground
DTC B0022 04
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Open Circuit
DTC B0022 0D
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Above Threshold
DTC B0022 0E
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Below Threshold
DTC B0023 01
- Right Roof Rail Air Bag Deployment Loop Short to Battery
DTC B0023 02
- Right Roof Rail Air Bag Deployment Loop Short to Ground
DTC B0023 04
- Right Roof Rail Air Bag Deployment Loop Open Circuit
DTC B0023 0D
- Right Roof Rail Air Bag Deployment Loop Resistance Above Threshold
DTC B0023 0E
- Right Roof Rail Air Bag Deployment Loop Resistance Below Threshold
Diagnostic Fault Information
DTC B0021 04
- Passenger Side Seat Air Bag Deployment Loop Open Circuit
DTC B0021 0D
- Passenger Side Seat Air Bag Deployment Loop Resistance Above Threshold
DTC B0021 0E
- Passenger Side Seat Air Bag Deployment Loop Resistance Below Threshold
DTC B0022 01
- RF Pretensioner Deployment Loop Short to Battery
DTC B0022 02
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Short to Ground
DTC B0022 04
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Open Circuit
DTC B0022 0D
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Above Threshold
DTC B0022 0E
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Below Threshold
DTC B0023 01
- Right Roof Rail Air Bag Deployment Loop Short to Battery
DTC B0023 02
- Right Roof Rail Air Bag Deployment Loop Short to Ground
DTC B0023 04
- Right Roof Rail Air Bag Deployment Loop Open Circuit
DTC B0023 0D
- Right Roof Rail Air Bag Deployment Loop Resistance Above Threshold
DTC B0023 0E
- Right Roof Rail Air Bag Deployment Loop Resistance Below Threshold
Diagnostic Fault Information
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 989
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 989
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 988
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 988
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 987
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 987
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 986
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 986
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123B
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C123B
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 985
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 985
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 984
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 984
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 983
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 983
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Inspect for one tire that has improper air pressure or improper size.
C123A
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Inspect for one tire that has improper air pressure or improper size.
C123A
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 982
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 982
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C122E
DTC C0245, C122E
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0245 00
- Wheel Speed Sensor Frequency Error
DTC C122E
- Wheel Speed Sensor Frequency Error
Circuit/System Description
As the wheel spins, the wheel speed sensor produces an AC signal. The electronic brake control module (EBCM) uses the frequency of the AC
signal to calculate the wheel speed.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
* Vehicle must be moving at a speed less than 14.5 km/h (9 mph).
* No wheel speed sensor faults exist.
* Brake is not applied.
* Vehicle is not cornering.
* No wheel spinning is detected.
Conditions for Setting the DTC
Wheel speed differences between one wheel and the others is greater than 25 percent.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system (VSES) for the duration
of the ignition cycle.
* A DIC message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Diagnostic Aids
* Faulty wheel speed sensor will not set this DTC.
* A vehicle using a space saver spare will not set this code.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C122E
DTC C0245, C122E
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0245 00
- Wheel Speed Sensor Frequency Error
DTC C122E
- Wheel Speed Sensor Frequency Error
Circuit/System Description
As the wheel spins, the wheel speed sensor produces an AC signal. The electronic brake control module (EBCM) uses the frequency of the AC
signal to calculate the wheel speed.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
* Vehicle must be moving at a speed less than 14.5 km/h (9 mph).
* No wheel speed sensor faults exist.
* Brake is not applied.
* Vehicle is not cornering.
* No wheel spinning is detected.
Conditions for Setting the DTC
Wheel speed differences between one wheel and the others is greater than 25 percent.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system (VSES) for the duration
of the ignition cycle.
* A DIC message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Diagnostic Aids
* Faulty wheel speed sensor will not set this DTC.
* A vehicle using a space saver spare will not set this code.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 981
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 981
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 980
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 980
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 98
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 98
- Driver Side Seat Air Bag Deployment Loop Resistance Above Threshold
DTC B0014 0E
- Driver Side Seat Air Bag Deployment Loop Resistance Below Threshold
DTC B0015 01
- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Battery
DTC B0015 02
- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Ground
DTC B0015 04
- Driver Seat Belt Retractor Pretensioner Deployment Loop Open Circuit
DTC B0015 0D
- Driver Seat Belt Retractor Pretensioner Deployment Loop Resistance Above Threshold
DTC B0015 0E
- Driver Seat Belt Retractor Pretensioner Deployment Loop Resistance Below Threshold
DTC B0016 01
- Left Roof Rail Air Bag Deployment Loop Short to Battery
DTC B0016 02
- Left Roof Rail Air Bag Deployment Loop Short to Ground
DTC B0016 04
- Left Roof Rail Air Bag Deployment Loop Open Circuit
DTC B0016 0D
- Left Roof Rail Air Bag Deployment Loop Resistance Above Threshold
DTC B0016 0E
- Left Roof Rail Air Bag Deployment Loop Resistance Below Threshold
DTC B0019 01
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Battery
DTC B0019 02
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Ground
DTC B0019 04
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Open Circuit
DTC B0019 0D
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Resistance Above Threshold
DTC B0019 0E
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Resistance Below Threshold
DTC B0020 01
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery
DTC B0020 02
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground
DTC B0020 04
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Open Circuit
DTC B0020 0D
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Resistance Above Threshold
DTC B0020 0E
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Resistance Below Threshold
DTC B0021 01
- Passenger Side Seat Air Bag Deployment Loop Short to Battery
DTC B0021 02
- Passenger Side Seat Air Bag Deployment Loop Short to Ground
- Driver Side Seat Air Bag Deployment Loop Resistance Above Threshold
DTC B0014 0E
- Driver Side Seat Air Bag Deployment Loop Resistance Below Threshold
DTC B0015 01
- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Battery
DTC B0015 02
- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Ground
DTC B0015 04
- Driver Seat Belt Retractor Pretensioner Deployment Loop Open Circuit
DTC B0015 0D
- Driver Seat Belt Retractor Pretensioner Deployment Loop Resistance Above Threshold
DTC B0015 0E
- Driver Seat Belt Retractor Pretensioner Deployment Loop Resistance Below Threshold
DTC B0016 01
- Left Roof Rail Air Bag Deployment Loop Short to Battery
DTC B0016 02
- Left Roof Rail Air Bag Deployment Loop Short to Ground
DTC B0016 04
- Left Roof Rail Air Bag Deployment Loop Open Circuit
DTC B0016 0D
- Left Roof Rail Air Bag Deployment Loop Resistance Above Threshold
DTC B0016 0E
- Left Roof Rail Air Bag Deployment Loop Resistance Below Threshold
DTC B0019 01
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Battery
DTC B0019 02
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Ground
DTC B0019 04
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Open Circuit
DTC B0019 0D
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Resistance Above Threshold
DTC B0019 0E
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Resistance Below Threshold
DTC B0020 01
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery
DTC B0020 02
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground
DTC B0020 04
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Open Circuit
DTC B0020 0D
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Resistance Above Threshold
DTC B0020 0E
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Resistance Below Threshold
DTC B0021 01
- Passenger Side Seat Air Bag Deployment Loop Short to Battery
DTC B0021 02
- Passenger Side Seat Air Bag Deployment Loop Short to Ground
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 979
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 979
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 978
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 978
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C121F
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C121F
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 977
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 977
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 976
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 976
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 975
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 975
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the electronic brake control module.
2. Ignition OFF, test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit Terminal 1 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Cycle ignition, verify DTC C0552 or C121D is not set.
瀚慖f DTCs are set, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C121E
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the electronic brake control module.
2. Ignition OFF, test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit Terminal 1 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Cycle ignition, verify DTC C0552 or C121D is not set.
瀚慖f DTCs are set, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C121E
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
DTC C056D 59
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
Wednesday, December 18, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 974
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 974
C121D
DTC C0552 or C121D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C0552 00
- Improper Shutdown
DTC C121D
- Improper Shutdown
Circuit/System Description
The electronic brake control module(EBCM) monitors the number of Key On and Key Off cycles. When it detects that a Key Off cycle was
incomplete or non-existent this fault will set. This means the fault reports a problem that occurred at the end of the previous ignition cycle. If this
occurs during an EBCM service operation, any calibrations or offsets learned during that service operation may not be properly stored in memory.
Conditions for Running the DTC
* Ignition ON.
* The ignition voltage is greater than 10 volts.
* The EBCM is initializing.
Conditions for Setting the DTC
A Key Off cycle was interrupted before completion, or power was removed from the module with the key in the ON position, vehicle moving and
brake is applied.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system (VSES) for the duration
of the ignition cycle.
* A DIC message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Diagnostic Aids
This DTC can set if battery voltage drops below 8 volts with ignition ON.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
C121D
DTC C0552 or C121D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C0552 00
- Improper Shutdown
DTC C121D
- Improper Shutdown
Circuit/System Description
The electronic brake control module(EBCM) monitors the number of Key On and Key Off cycles. When it detects that a Key Off cycle was
incomplete or non-existent this fault will set. This means the fault reports a problem that occurred at the end of the previous ignition cycle. If this
occurs during an EBCM service operation, any calibrations or offsets learned during that service operation may not be properly stored in memory.
Conditions for Running the DTC
* Ignition ON.
* The ignition voltage is greater than 10 volts.
* The EBCM is initializing.
Conditions for Setting the DTC
A Key Off cycle was interrupted before completion, or power was removed from the module with the key in the ON position, vehicle moving and
brake is applied.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system (VSES) for the duration
of the ignition cycle.
* A DIC message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Diagnostic Aids
This DTC can set if battery voltage drops below 8 volts with ignition ON.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 973
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 973
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects an internal malfunction.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 972
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 972
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
DTC C12D0
- ABS Left Rear Dump Solenoid valve Circuit Open
DTC C12D1
- ABS Left Rear Dump Solenoid Valve Circuit Shorted
DTC C12D2
- ABS Left Rear Dump Solenoid Valve Driver Shorted
DTC C12D3
- ABS Right Rear Dump Solenoid Valve Circuit Open
DTC C12D4
- ABS Right Rear Dump Solenoid Valve Circuit Shorted
DTC C12D5
- ABS Right Rear Dump Solenoid Driver Shorted
DTC C12D6
- ABS Base Brake Open Solenoid Circuit Open
DTC C12D7
- ABS Base Brake Open Solenoid Circuit Shorted
DTC C12D8
- ABS Base Brake Open Solenoid Driver Shorted
DTC C12D9
- ABS Base Brake Closed Solenoid Circuit Open
DTC C12DA
- ABS Base Brake Closed Solenoid Circuit Shorted
DTC C12DB
- ABS Base Brake Closed Solenoid Driver Shorted
DTC C12DC
- ABS Boost Valve Solenoid Circuit Open
DTC C12DD
- ABS Boost Valve Isolation Solenoid Driver Shorted
DTC C12DE
- ABS Proportioning Valve Solenoid Circuit Open
DTC C12DF
- ABS Proportioning Valve Solenoid Driver Shorted
DTC C12F2
- ABS Left Rear Isolation Solenoid Valve Circuit Shorted
DTC C12F3
- ABS Left Rear Isolation Solenoid Circuit Performance
DTC C12F4
- ABS Proportioning Valve Solenoid Performance
DTC C12F5
- ABS Right Rear Isolation Solenoid Circuit Shorted
DTC C12F6
- ABS Right Rear Isolation Solenoid Performance
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 971
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 971
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
- ECU Hardware Performance
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C121C
- EBCM Internal Communication Error
DTC C121E
- EBCM Unimplemented Interrupt
DTC C121F
- EBCM Unexpected Exception
DTC C123A
- EBCM High End Timer Watchdog
DTC C123B
- EBCM High End Timer Program Overflow
DTC C123C
- EBCM High End Timer RAM Fault
DTC C123D
- EBCM Solenoid Timeout
DTC C123E
- EBCM High End Timer Periodic Interrupt
DTC C123F
- EBCM Serial Peripheral Interface Inoperative
DTC C1255
- Electronic Control Unit Performance
DTC C1256
- Program ROM Checksum Error
DTC C126E
- EBCM Stack Overrun
DTC C126F
- EBCM Serial Peripheral Interface Performance
DTC C127C
- EBCM Self Test Failed
DTC C127E
- EBCM Module High Temperature
DTC C12A7
- ABS Boost Valve Solenoid Circuit Performance
DTC C12C2
- ABS Left Front Isolation Solenoid Valve Driver Shorted
DTC C12C5
- ABS Right Front Isolation Solenoid Valve Diver Shorted
DTC C12C6
- ABS Left Rear Isolation Solenoid Valve Circuit Failure
DTC C12C8
- ABS Right Rear Isolation Solenoid Valve Circuit Failure
DTC C12CC
- ABS Left Front Dump Solenoid Valve Driver Shorted
DTC C12CF
- ABS Right Front Dump Solenoid Valve Driver Shorted
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 970
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 970
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Using a scan tool, perform the EBCM, Module Setup, EBCM Relearn.
2. Verify that DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB or C12F7 is not set.
瀚慖f the DTC is set replace brake pressure modulator valve assembly. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, programming and setup
C121C
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Using a scan tool, perform the EBCM, Module Setup, EBCM Relearn.
2. Verify that DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB or C12F7 is not set.
瀚慖f the DTC is set replace brake pressure modulator valve assembly. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, programming and setup
C121C
DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC C056D 00
- ECU Hardware Performance
DTC C056D 3C
- ECU Hardware Performance Internal Communications Failure
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 97
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 97
瀚慖f greater than the specified range, test the circuit for a short to voltage.
13. Ignition OFF, test for infinite resistance between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f less than the specified value, test the circuit for a short to ground.
14. Test for infinite resistance between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f less than the specified value, test the circuit for a short to ground.
15. Test for less then 1 ohm between the SDM connector and the air bag connector high circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1 and SDM terminal 4 X1.
* Driver steering wheel air bag coil connector Stage 2 terminal A X2 and SDM terminal 1 X1.
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
16. Test for less then 1 ohm between the SDM connector and the air bag connector low circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1 and SDM terminal 3 X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2 and SDM terminal 2 X1
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
17. If all circuits test normal, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Wheel Inflatable Restraint Module Coil Replacement (See: Restraints and Safety Systems/Air Bag Systems/Clockspring Assembly
/ Spiral Cable/Service and Repair/Removal and Replacement)
* Steering Wheel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and
Repair/Removal and Replacement/Steering Wheel Inflatable Restraint Module Replacement)
* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming
B0014
DTC B0014-B0045
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B0014 01
- Driver Side Seat Air Bag Deployment Loop Short to Battery
DTC B0014 02
- Driver Side Seat Air Bag Deployment Loop Short to Ground
DTC B0014 04
- Driver Side Seat Air Bag Deployment Loop Open Circuit
瀚慖f greater than the specified range, test the circuit for a short to voltage.
13. Ignition OFF, test for infinite resistance between the high circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1
* Driver steering wheel air bag coil connector Stage 2 terminal A X2
瀚慖f less than the specified value, test the circuit for a short to ground.
14. Test for infinite resistance between the low circuit terminals listed below and ground.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2
瀚慖f less than the specified value, test the circuit for a short to ground.
15. Test for less then 1 ohm between the SDM connector and the air bag connector high circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal A X1 and SDM terminal 4 X1.
* Driver steering wheel air bag coil connector Stage 2 terminal A X2 and SDM terminal 1 X1.
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
16. Test for less then 1 ohm between the SDM connector and the air bag connector low circuit terminals listed below.
* Driver steering wheel air bag coil connector Stage 1 terminal B X1 and SDM terminal 3 X1
* Driver steering wheel air bag coil connector Stage 2 terminal B X2 and SDM terminal 2 X1
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
17. If all circuits test normal, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Wheel Inflatable Restraint Module Coil Replacement (See: Restraints and Safety Systems/Air Bag Systems/Clockspring Assembly
/ Spiral Cable/Service and Repair/Removal and Replacement)
* Steering Wheel Inflatable Restraint Module Replacement (See: Restraints and Safety Systems/Air Bag Systems/Air Bag/Service and
Repair/Removal and Replacement/Steering Wheel Inflatable Restraint Module Replacement)
* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Wiring Repairs/SIR/SRS Wiring Repairs)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming
B0014
DTC B0014-B0045
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B0014 01
- Driver Side Seat Air Bag Deployment Loop Short to Battery
DTC B0014 02
- Driver Side Seat Air Bag Deployment Loop Short to Ground
DTC B0014 04
- Driver Side Seat Air Bag Deployment Loop Open Circuit
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 969
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 969
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C12F7
- ABS Boost Pressure Sensor and Regenerative Axle Pressure Sensor Not Plausible
DTC C128F
- ABS Regenerative Axle Pressure Sensor Raw Offset Error
DTC C012C 01
- Regenerative Axle Pressure Sensor Short to Battery
DTC C12BA
- ABS Regenerative Axle Pressure Sensor Circuit Short To Battery
DTC C012C 06
- Regenerative Axle Pressure Sensor Short to Ground or Open
DTC C12B9
- ABS Regenerative Axle Pressure Sensor Circuit Open or Short To Ground
DTC C012C 11
- Regenerative Axle Pressure Sensor Above Maximum Threshold
DTC C128C
- ABS Regenerative Axle Pressure Sensor Offset Error
DTC C012C 0F
- Regenerative Axle Pressure Sensor Erratic
DTC C12BB
- ABS Regenerative Axle Pressure Sensor Erratic
DTC C121A
- ABS Regenerative Axle Pressure Sensor
Circuit/System Description
The electronic brake control module (EBCM) uses input from the regenerative axle pressure sensor for more accurate control during a brake and
vehicle stability enhancement system (VSES) event. The regenerative axle pressure sensor is internal to the brake pressure modulator valve
assembly.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
C128F, C12F7, C121A, C012C 11 or C128C
Internal sensor failure is detected.
C012C 01 or C12BA
A short to battery is detected on the sensor signal circuit.
C012C 06 or C12B9
A short to ground or open is detected signal circuit.
C012C 0F or C12BB
Signal is erratic and changes faster than physically allowed.
Action Taken When the DTC Sets
A DIC message and/or a warning indicator may be displayed.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C12F7
- ABS Boost Pressure Sensor and Regenerative Axle Pressure Sensor Not Plausible
DTC C128F
- ABS Regenerative Axle Pressure Sensor Raw Offset Error
DTC C012C 01
- Regenerative Axle Pressure Sensor Short to Battery
DTC C12BA
- ABS Regenerative Axle Pressure Sensor Circuit Short To Battery
DTC C012C 06
- Regenerative Axle Pressure Sensor Short to Ground or Open
DTC C12B9
- ABS Regenerative Axle Pressure Sensor Circuit Open or Short To Ground
DTC C012C 11
- Regenerative Axle Pressure Sensor Above Maximum Threshold
DTC C128C
- ABS Regenerative Axle Pressure Sensor Offset Error
DTC C012C 0F
- Regenerative Axle Pressure Sensor Erratic
DTC C12BB
- ABS Regenerative Axle Pressure Sensor Erratic
DTC C121A
- ABS Regenerative Axle Pressure Sensor
Circuit/System Description
The electronic brake control module (EBCM) uses input from the regenerative axle pressure sensor for more accurate control during a brake and
vehicle stability enhancement system (VSES) event. The regenerative axle pressure sensor is internal to the brake pressure modulator valve
assembly.
Conditions for Running the DTC
* Ignition ON.
* Ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
C128F, C12F7, C121A, C012C 11 or C128C
Internal sensor failure is detected.
C012C 01 or C12BA
A short to battery is detected on the sensor signal circuit.
C012C 06 or C12B9
A short to ground or open is detected signal circuit.
C012C 0F or C12BB
Signal is erratic and changes faster than physically allowed.
Action Taken When the DTC Sets
A DIC message and/or a warning indicator may be displayed.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 968
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 968
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Verify DTC C0455 is not set.
瀚慖f DTC is set, refer to DTC C0455 (See: C Code Charts/C0455).
2. Verify DTC C0277 is not set.
瀚慖f DTC is set, refer to DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or C12F8 (See: C Code Charts/C0277/Antilock
Brake System - Hybrid (HP2)).
3. Ignition OFF, disconnect the harness connector at the electronic brake control position sensor.
4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, programming and setup
C121A
DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB, or C12F7
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Verify DTC C0455 is not set.
瀚慖f DTC is set, refer to DTC C0455 (See: C Code Charts/C0455).
2. Verify DTC C0277 is not set.
瀚慖f DTC is set, refer to DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or C12F8 (See: C Code Charts/C0277/Antilock
Brake System - Hybrid (HP2)).
3. Ignition OFF, disconnect the harness connector at the electronic brake control position sensor.
4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, programming and setup
C121A
DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB, or C12F7
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 967
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 967
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C120F
DTC C0880, C12E5, or C120F
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output Circuit
DTC C12E5 00
- Brake Pedal Position Sensor Reference Circuit
DTC C0880 02
- Device Voltage Reference Output Circuit Short to Ground
DTC C120F 00
- Device Voltage Reference Output Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The electronic brake control module (EBCM) supplies a shared 5 volt reference to the brake master cylinder piston position sensor, steering angle
sensor and brake master cylinder piston position sensor.
Conditions for Running the DTC
* Ignition ON.
* The ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects the voltage on the 5 V reference circuit to the brake master cylinder piston position sensor, steering angle sensor and brake
master cylinder piston position sensor is less than 4.8 V or greater than 5.2 V.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C120F
DTC C0880, C12E5, or C120F
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output Circuit
DTC C12E5 00
- Brake Pedal Position Sensor Reference Circuit
DTC C0880 02
- Device Voltage Reference Output Circuit Short to Ground
DTC C120F 00
- Device Voltage Reference Output Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The electronic brake control module (EBCM) supplies a shared 5 volt reference to the brake master cylinder piston position sensor, steering angle
sensor and brake master cylinder piston position sensor.
Conditions for Running the DTC
* Ignition ON.
* The ignition voltage is greater than 10 volts.
Conditions for Setting the DTC
The EBCM detects the voltage on the 5 V reference circuit to the brake master cylinder piston position sensor, steering angle sensor and brake
master cylinder piston position sensor is less than 4.8 V or greater than 5.2 V.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 966
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 966
C0201 04 or C120D
* The EBCM detects an open in the circuits to the solenoid valve relay.
* The EBCM detects a stuck open solenoid valve relay.
C0201 0E or C120D
* The EBCM detects an short to battery in the circuits to the solenoid valve relay.
* The EBCM detects a stuck closed solenoid valve relay.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS) and the vehicle stability enhancement system for the duration of the ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance. If the circuit tests normal
and the B+ circuit fuse is open, replace the brake pressure modulator valve assembly.
4. If all circuits test normal, replace the EBCM and verify DTC does not reset. If the DTC resets, replace the brake pressure modulator valve
assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
C0201 04 or C120D
* The EBCM detects an open in the circuits to the solenoid valve relay.
* The EBCM detects a stuck open solenoid valve relay.
C0201 0E or C120D
* The EBCM detects an short to battery in the circuits to the solenoid valve relay.
* The EBCM detects a stuck closed solenoid valve relay.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS) and the vehicle stability enhancement system for the duration of the ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance. If the circuit tests normal
and the B+ circuit fuse is open, replace the brake pressure modulator valve assembly.
4. If all circuits test normal, replace the EBCM and verify DTC does not reset. If the DTC resets, replace the brake pressure modulator valve
assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 965
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 965
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance. If the circuit tests normal
and the B+ circuit fuse is open, replace the brake pressure modulator valve assembly.
4. If all circuits test normal, replace the EBCM and verify DTC does not reset. If the DTC resets, replace the brake pressure modulator valve
assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C120E
DTC C0201, C120D, or C120E
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0201 04
- Antilock Brake System (ABS) Enable Relay Contact Circuit Open
DTC C120D
- Traction Control Power Switch Circuit Open
DTC C0201 0E
- Antilock Brake System (ABS) Enable Relay Contact Circuit Resistance Below Threshold
DTC C120E
- Traction Control Power Switch Circuit Shorted
Circuit/System Description
The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.
Conditions for Running the DTC
C0201 04 or C120D
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded ON.
C0201 0E or C120E
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded OFF.
Conditions for Setting the DTC
2. Test for less than 1 ohm between the ground circuits listed below and ground.
* Terminal 13
* Terminal 38
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 1
* Terminal 25
瀚慖f the test lamp does not illuminate, test the appropriate circuit for a short to ground or an open/high resistance. If the circuit tests normal
and the B+ circuit fuse is open, replace the brake pressure modulator valve assembly.
4. If all circuits test normal, replace the EBCM and verify DTC does not reset. If the DTC resets, replace the brake pressure modulator valve
assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C120E
DTC C0201, C120D, or C120E
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0201 04
- Antilock Brake System (ABS) Enable Relay Contact Circuit Open
DTC C120D
- Traction Control Power Switch Circuit Open
DTC C0201 0E
- Antilock Brake System (ABS) Enable Relay Contact Circuit Resistance Below Threshold
DTC C120E
- Traction Control Power Switch Circuit Shorted
Circuit/System Description
The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.
Conditions for Running the DTC
C0201 04 or C120D
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded ON.
C0201 0E or C120E
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded OFF.
Conditions for Setting the DTC
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 964
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 964
DTC C0201 0E
- Antilock Brake System (ABS) Enable Relay Contact Circuit Resistance Below Threshold
DTC C120E
- Traction Control Power Switch Circuit Shorted
Circuit/System Description
The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.
Conditions for Running the DTC
C0201 04 or C120D
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded ON.
C0201 0E or C120E
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded OFF.
Conditions for Setting the DTC
C0201 04 or C120D
* The EBCM detects an open in the circuits to the solenoid valve relay.
* The EBCM detects a stuck open solenoid valve relay.
C0201 0E or C120D
* The EBCM detects an short to battery in the circuits to the solenoid valve relay.
* The EBCM detects a stuck closed solenoid valve relay.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS) and the vehicle stability enhancement system for the duration of the ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
DTC C0201 0E
- Antilock Brake System (ABS) Enable Relay Contact Circuit Resistance Below Threshold
DTC C120E
- Traction Control Power Switch Circuit Shorted
Circuit/System Description
The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.
Conditions for Running the DTC
C0201 04 or C120D
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded ON.
C0201 0E or C120E
* Ignition voltage is greater than 10 V.
* The solenoid relay is commanded OFF.
Conditions for Setting the DTC
C0201 04 or C120D
* The EBCM detects an open in the circuits to the solenoid valve relay.
* The EBCM detects a stuck open solenoid valve relay.
C0201 0E or C120D
* The EBCM detects an short to battery in the circuits to the solenoid valve relay.
* The EBCM detects a stuck closed solenoid valve relay.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS) and the vehicle stability enhancement system for the duration of the ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
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