2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 878
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. Engine running, accessories OFF, measure and record the battery voltage at the 12 V battery terminals. The voltage should be between
12.6-15.0 V.
瀚慖f not within the specified range, refer to Charging System Test (See: Starting and Charging/Testing and Inspection/Component Tests
and General Diagnostics/Charging System Test).
2. Observe the scan tool EBCM Battery Voltage Signal parameter. The reading should be between 12.6-15.0 Volts.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 Ohms between the ground
circuit terminal 38 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Verify that a test lamp illuminates between the 12 V B+ circuit terminal 25 and ground.
瀚慖f the test lamp does not illuminate, test the 12 V B+ circuit for a short to ground or an open/high resistance.
4. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 14 and ground.
瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
5. 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.
C12E2
DTC C0900 or C12E2
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 C0900 00
- Device Voltage High - EBCM 12V
DTC C0900 07
- Device Voltage High - EBCM 12V
Showing posts with label Electrical Information Reference. Show all posts
Showing posts with label Electrical Information Reference. Show all posts
Saturday, December 14, 2019
Monday, November 18, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 957
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 957
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
Verify that no DTCs are set in the ECM or APM.
If DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code
(DTC) List - Vehicle).
Antilock Brake System - Non-Hybrid Less than 3900 kg (8600 lb) GVW
DTC C0561
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 Descriptor
DTC C0561 71
- System Disabled Information Stored Invalid Serial Data Received
DTC C0561 72
- System Disabled Information Stored Alive Counter Incorrect or not Updated
DTC C0561 74
- System Disabled Information Stored Value of Signal Protection Calculation Incorrect
Circuit/System Description
The electronic brake control module (EBCM) receives messages from other modules over GMLAN which are needed to perform antilock brake
system (ABS), vehicle stability enhancement system (VSES), or traction control system (TCS) functions.
Conditions for Running the DTC
* The ignition switch is in the ON position.
* Ignition voltage is greater than 9.5 volts.
Conditions for Setting the DTC
The EBCM receives an invalid message from another module over GMLAN which causes EBCM to deactivate ABS, VSES, TCS, etc.
Action Taken When the DTC Sets
One or more of the following actions may occur:
* The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
* The dynamic rear proportioning (DRP) may be disabled and the Brake Warning indicator may turn ON.
* The Stability Caution indicator turns ON.
* The driver information center (DIC) displays the SERVICE STAB SYS message.
* The DIC displays the TRACTION FAILED message.
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
Verify that no DTCs are set in the ECM or APM.
If DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code
(DTC) List - Vehicle).
Antilock Brake System - Non-Hybrid Less than 3900 kg (8600 lb) GVW
DTC C0561
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 Descriptor
DTC C0561 71
- System Disabled Information Stored Invalid Serial Data Received
DTC C0561 72
- System Disabled Information Stored Alive Counter Incorrect or not Updated
DTC C0561 74
- System Disabled Information Stored Value of Signal Protection Calculation Incorrect
Circuit/System Description
The electronic brake control module (EBCM) receives messages from other modules over GMLAN which are needed to perform antilock brake
system (ABS), vehicle stability enhancement system (VSES), or traction control system (TCS) functions.
Conditions for Running the DTC
* The ignition switch is in the ON position.
* Ignition voltage is greater than 9.5 volts.
Conditions for Setting the DTC
The EBCM receives an invalid message from another module over GMLAN which causes EBCM to deactivate ABS, VSES, TCS, etc.
Action Taken When the DTC Sets
One or more of the following actions may occur:
* The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
* The dynamic rear proportioning (DRP) may be disabled and the Brake Warning indicator may turn ON.
* The Stability Caution indicator turns ON.
* The driver information center (DIC) displays the SERVICE STAB SYS message.
* The DIC displays the TRACTION FAILED message.
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 311
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 311
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
Ignition ON, command the appropriate actuator in both directions with a scan tool. The scan tool door position parameter reading should be
between 3 and 253 counts.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate actuator.
2. Test for less than 10 ohms between the low reference circuit terminal 7 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 10 and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage.
4. Verify the appropriate scan tool parameter is greater than 250 counts.
瀚慖f greater than the specified range, test the signal circuit terminal 9 for a short to ground.
5. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and the low reference circuit terminal. Verify the appropriate scan
tool parameter is less than 4 counts.
瀚慖f less than the specified range, test the signal circuit for a short to voltage or an open/high resistance.
6. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.
瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
7. Install a DMM between the actuator control circuit terminal 6 and ground. While monitoring the DMM, use the scan tool to command the
appropriate actuator from one direction to the other. The voltage on the control circuit should move from 0 volts in one direction to 5 volts in
the other direction and 2.5 volts in the at rest state.
瀚慖f the voltage does not change, test the control circuit for an open, short to voltage or short to ground. If circuit tests normal replace the
HVAC control module.
8. If all circuits test normal, replace the actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Inlet Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Air Inlet Valve Actuator Replacement)
* Mode Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Mode Valve Actuator Replacement)
* Temperature Valve Actuator Replacement - Left Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and
Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Left Side)
* Temperature Valve Actuator Replacement - Right Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service
and Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Right Side)
* Auxiliary Temperature Valve Actuator Replacement (Behr) (See: Heating and Air Conditioning/Air Door/Air Door Actuator /
Motor/Service and Repair/HVAC - Automatic/Auxiliary Temperature Valve Actuator Replacement (Behr))Auxiliary Temperature Valve
Actuator Replacement (Delphi) (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
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
Ignition ON, command the appropriate actuator in both directions with a scan tool. The scan tool door position parameter reading should be
between 3 and 253 counts.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate actuator.
2. Test for less than 10 ohms between the low reference circuit terminal 7 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 10 and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage.
4. Verify the appropriate scan tool parameter is greater than 250 counts.
瀚慖f greater than the specified range, test the signal circuit terminal 9 for a short to ground.
5. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and the low reference circuit terminal. Verify the appropriate scan
tool parameter is less than 4 counts.
瀚慖f less than the specified range, test the signal circuit for a short to voltage or an open/high resistance.
6. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.
瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
7. Install a DMM between the actuator control circuit terminal 6 and ground. While monitoring the DMM, use the scan tool to command the
appropriate actuator from one direction to the other. The voltage on the control circuit should move from 0 volts in one direction to 5 volts in
the other direction and 2.5 volts in the at rest state.
瀚慖f the voltage does not change, test the control circuit for an open, short to voltage or short to ground. If circuit tests normal replace the
HVAC control module.
8. If all circuits test normal, replace the actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Inlet Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Air Inlet Valve Actuator Replacement)
* Mode Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Mode Valve Actuator Replacement)
* Temperature Valve Actuator Replacement - Left Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and
Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Left Side)
* Temperature Valve Actuator Replacement - Right Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service
and Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Right Side)
* Auxiliary Temperature Valve Actuator Replacement (Behr) (See: Heating and Air Conditioning/Air Door/Air Door Actuator /
Motor/Service and Repair/HVAC - Automatic/Auxiliary Temperature Valve Actuator Replacement (Behr))Auxiliary Temperature Valve
Actuator Replacement (Delphi) (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Sunday, November 17, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 877
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 877
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. Verify that DTC C0186, C0196, C0252, or C0710 is not set.
瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle)
2. Replace the steering angle sensor. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Wheel Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and
Switches - Steering/Steering Angle Sensor/Service and Repair/Steering Wheel Position Sensor Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C0267
DTC C0267
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 Descriptor
DTC C0267 00
- Low Brake Fluid Indicated
Diagnostic Fault Information
Circuit/System Description
The brake fluid level switch monitors the level of brake fluid in the master cylinder. When the instrument panel cluster (IPC) sees the brake fluid
level switch input closed, it turns ON the Red Brake Warning indicator and sends a serial data message to the electronic brake control module
(EBCM) that the brake fluid level is low.
Conditions for Running the DTC
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. Verify that DTC C0186, C0196, C0252, or C0710 is not set.
瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle)
2. Replace the steering angle sensor. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Wheel Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and
Switches - Steering/Steering Angle Sensor/Service and Repair/Steering Wheel Position Sensor Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C0267
DTC C0267
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 Descriptor
DTC C0267 00
- Low Brake Fluid Indicated
Diagnostic Fault Information
Circuit/System Description
The brake fluid level switch monitors the level of brake fluid in the master cylinder. When the instrument panel cluster (IPC) sees the brake fluid
level switch input closed, it turns ON the Red Brake Warning indicator and sends a serial data message to the electronic brake control module
(EBCM) that the brake fluid level is low.
Conditions for Running the DTC
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 292
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 292
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. With a master vehicle key, turn the ignition ON.
2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.
3. Turn the ignition OFF and wait 5 seconds.
4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.
5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.
6. Using the Red Emergency Button, notify the advisor that the Ignition Block on the vehicle has been cleared and to update the account status.
B320A
DTC B320A
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 B320A 39
- Front Door Window Motor Internal Electronic Failure
DTC B320A 42
- Front Door Window Motor Calibration Data Set Not Programmed
DTC B320A 4B
- Front Door Window Motor Calibration Not Learned
Diagnostic Fault Information
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. With a master vehicle key, turn the ignition ON.
2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.
3. Turn the ignition OFF and wait 5 seconds.
4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.
5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.
6. Using the Red Emergency Button, notify the advisor that the Ignition Block on the vehicle has been cleared and to update the account status.
B320A
DTC B320A
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 B320A 39
- Front Door Window Motor Internal Electronic Failure
DTC B320A 42
- Front Door Window Motor Calibration Data Set Not Programmed
DTC B320A 4B
- Front Door Window Motor Calibration Not Learned
Diagnostic Fault Information
Friday, November 15, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 701
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 701
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
Ignition ON,observe the scan tool Tilt Up Switch parameter and Tilt Down Switch parameter while cycling the switch between states.The reading
should be Inactive and change to Active when pushing the appropriate switch.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal B 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.
3. Verify the scan tool tilt switch parameter is Inactive.
瀚慖f not the specified value, test the control circuit listed below for a short to voltage. If the circuit tests normal, replace the MSM.
* Tilt Up Switch terminal C
* Tilt Down Switch terminal A
4. Install a 3A fused jumper wire between the control circuits listed below and the B+ circuit terminal. Verify the scan tool tilt switch parameter
is Active.
* Tilt Up Switch terminal C
* Tilt Down Switch terminal A
瀚慖f not the specified value, test the appropriate control circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
5. If all circuit test normal, test or replace the tilt switch.
Component Testing
Tilt Switch
1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Test for infinite resistance between the control terminals A and C with the switch in the neutral position.
瀚慖f less than the specified range, replace the tilt switch.
3. Test for less than 1 ohm between the control terminals listed below and the B+ terminal B with the switch in each appropriate position.
* Tilt Up Switch terminal C
* Tilt Down Switch terminal A
瀚慖f greater than the specified value, replace the tilt switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Column Tilt Wheel Switch Replacement (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and
Switches - Steering/Tilt Wheel Switch/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
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
Ignition ON,observe the scan tool Tilt Up Switch parameter and Tilt Down Switch parameter while cycling the switch between states.The reading
should be Inactive and change to Active when pushing the appropriate switch.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal B 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.
3. Verify the scan tool tilt switch parameter is Inactive.
瀚慖f not the specified value, test the control circuit listed below for a short to voltage. If the circuit tests normal, replace the MSM.
* Tilt Up Switch terminal C
* Tilt Down Switch terminal A
4. Install a 3A fused jumper wire between the control circuits listed below and the B+ circuit terminal. Verify the scan tool tilt switch parameter
is Active.
* Tilt Up Switch terminal C
* Tilt Down Switch terminal A
瀚慖f not the specified value, test the appropriate control circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
5. If all circuit test normal, test or replace the tilt switch.
Component Testing
Tilt Switch
1. Ignition OFF, disconnect the harness connector at the tilt switch.
2. Test for infinite resistance between the control terminals A and C with the switch in the neutral position.
瀚慖f less than the specified range, replace the tilt switch.
3. Test for less than 1 ohm between the control terminals listed below and the B+ terminal B with the switch in each appropriate position.
* Tilt Up Switch terminal C
* Tilt Down Switch terminal A
瀚慖f greater than the specified value, replace the tilt switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Column Tilt Wheel Switch Replacement (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and
Switches - Steering/Tilt Wheel Switch/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 665
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 665
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 low beam headlamp relay.
2. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 87 and ground.
瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.
3. Verify that a test lamp illuminates between the B+ circuit terminal 85 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. If the circuit tests normal and the
B+ circuit fuse is open, test the control circuit terminal 87 for a short to ground. If the circuit tests normal, test or replace the low beam
headlamp relay.
4. Verify that a test lamp illuminates between the B+ circuit terminal 30 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
5. Disconnect the harness connector at the appropriate head lamp.
6. Test for less than 5 ohm between the head lamp ground circuit terminal listed below and ground:
* With X88 - Terminal A
* With Z88 - Terminal B
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
7. Connect the harness connector at the headlamp.
8. Connect a 20 A fused jumper wire between the B+ circuit terminal 30 and the control circuit terminal 87. Verify the headlamp is activated.
瀚慖f the headlamp does not activate and the circuit fuse is good, test the control circuit for an open/high resistance. If the circuit tests
normal, test or replace the headlamp.
瀚慖f the headlamp does not activate and the circuit fuse is open, test the control circuit for a short to ground. If the circuit tests normal, test
or replace the headlamp.
9. Connect a test lamp between the B+ circuit terminal 85 and the control circuit terminal 86.
10. Command the Low Beams ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded
states.
瀚慖f the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
瀚慖f the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace
the BCM.
11. If all circuits test normal, test or replace the low beam headlamp relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay
Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power
Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))
* Headlamp Replacement (Cadillac Escalade) (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp
Replacement (Cadillac Escalade))Headlamp Replacement (GMC Yukon Two-mode Hybrid) (See: Lighting and Horns/Headlamp/Service
and Repair/Removal and Replacement/Headlamp Replacement (GMC Yukon Two-mode Hybrid))Headlamp Replacement (Yukon) (See:
Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp Replacement (Yukon))Headlamp Replacement
(Chevrolet Tahoe Two-mode Hybrid) (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp
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 low beam headlamp relay.
2. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 87 and ground.
瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.
3. Verify that a test lamp illuminates between the B+ circuit terminal 85 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. If the circuit tests normal and the
B+ circuit fuse is open, test the control circuit terminal 87 for a short to ground. If the circuit tests normal, test or replace the low beam
headlamp relay.
4. Verify that a test lamp illuminates between the B+ circuit terminal 30 and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
5. Disconnect the harness connector at the appropriate head lamp.
6. Test for less than 5 ohm between the head lamp ground circuit terminal listed below and ground:
* With X88 - Terminal A
* With Z88 - Terminal B
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
7. Connect the harness connector at the headlamp.
8. Connect a 20 A fused jumper wire between the B+ circuit terminal 30 and the control circuit terminal 87. Verify the headlamp is activated.
瀚慖f the headlamp does not activate and the circuit fuse is good, test the control circuit for an open/high resistance. If the circuit tests
normal, test or replace the headlamp.
瀚慖f the headlamp does not activate and the circuit fuse is open, test the control circuit for a short to ground. If the circuit tests normal, test
or replace the headlamp.
9. Connect a test lamp between the B+ circuit terminal 85 and the control circuit terminal 86.
10. Command the Low Beams ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded
states.
瀚慖f the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
瀚慖f the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace
the BCM.
11. If all circuits test normal, test or replace the low beam headlamp relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay
Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power
Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))
* Headlamp Replacement (Cadillac Escalade) (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp
Replacement (Cadillac Escalade))Headlamp Replacement (GMC Yukon Two-mode Hybrid) (See: Lighting and Horns/Headlamp/Service
and Repair/Removal and Replacement/Headlamp Replacement (GMC Yukon Two-mode Hybrid))Headlamp Replacement (Yukon) (See:
Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp Replacement (Yukon))Headlamp Replacement
(Chevrolet Tahoe Two-mode Hybrid) (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp
Tuesday, November 12, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 377
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 377
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
Perform the RCDLR Programming and Setup procedure. Refer to Remote Control Door Lock Receiver Programming and Setup (See: Accessories
and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry Receiver/Testing and Inspection).
If the DTC resets, replace the RCDLR.
Repair Instructions
Important: This vehicle may be equipped with the 2 Way Advanced Remote Start System. Vehicle equipped with the 2 Way Advanced
Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing
the 2 Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2 Way
Advanced Remote Start System can be found in the Accessory section of the parts manual.
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for RCDLR replacement, setup, and programming
B1011
DTC B1011
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 Descriptor
DTC B1011 71
- System Disabled Information Stored Invalid Serial Data Received
Circuit/System Description
The vehicle rollover sensor (ROS) monitors the vehicle speed signal (VSS) on the GMLAN serial data circuit. If the VSS is marked as invalid or is
missing, the ROS will set a diagnostic trouble code (DTC).
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
If the VSS is marked as invalid or is missing.
Conditions for Clearing the DTC
* The condition for setting the DTC no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
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
Perform the RCDLR Programming and Setup procedure. Refer to Remote Control Door Lock Receiver Programming and Setup (See: Accessories
and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry Receiver/Testing and Inspection).
If the DTC resets, replace the RCDLR.
Repair Instructions
Important: This vehicle may be equipped with the 2 Way Advanced Remote Start System. Vehicle equipped with the 2 Way Advanced
Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing
the 2 Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2 Way
Advanced Remote Start System can be found in the Accessory section of the parts manual.
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for RCDLR replacement, setup, and programming
B1011
DTC B1011
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 Descriptor
DTC B1011 71
- System Disabled Information Stored Invalid Serial Data Received
Circuit/System Description
The vehicle rollover sensor (ROS) monitors the vehicle speed signal (VSS) on the GMLAN serial data circuit. If the VSS is marked as invalid or is
missing, the ROS will set a diagnostic trouble code (DTC).
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
If the VSS is marked as invalid or is missing.
Conditions for Clearing the DTC
* The condition for setting the DTC no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Monday, November 11, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 312
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 312
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
Ignition ON, command the appropriate actuator in both directions with a scan tool. The scan tool door position parameter reading should be
between 3 and 253 counts.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate actuator.
2. Test for less than 10 ohms between the low reference circuit terminal 7 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 10 and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage.
4. Verify the appropriate scan tool parameter is greater than 250 counts.
瀚慖f greater than the specified range, test the signal circuit terminal 9 for a short to ground.
5. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and the low reference circuit terminal. Verify the appropriate scan
tool parameter is less than 4 counts.
瀚慖f less than the specified range, test the signal circuit for a short to voltage or an open/high resistance.
6. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.
瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
7. Install a DMM between the actuator control circuit terminal 6 and ground. While monitoring the DMM, use the scan tool to command the
appropriate actuator from one direction to the other. The voltage on the control circuit should move from 0 volts in one direction to 5 volts in
the other direction and 2.5 volts in the at rest state.
瀚慖f the voltage does not change, test the control circuit for an open, short to voltage or short to ground. If circuit tests normal replace the
HVAC control module.
8. If all circuits test normal, replace the actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Inlet Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Air Inlet Valve Actuator Replacement)
* Mode Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Mode Valve Actuator Replacement)
* Temperature Valve Actuator Replacement - Left Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and
Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Left Side)
* Temperature Valve Actuator Replacement - Right Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service
and Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Right Side)
* Auxiliary Temperature Valve Actuator Replacement (Behr) (See: Heating and Air Conditioning/Air Door/Air Door Actuator /
Motor/Service and Repair/HVAC - Automatic/Auxiliary Temperature Valve Actuator Replacement (Behr))Auxiliary Temperature Valve
Actuator Replacement (Delphi) (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
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
Ignition ON, command the appropriate actuator in both directions with a scan tool. The scan tool door position parameter reading should be
between 3 and 253 counts.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate actuator.
2. Test for less than 10 ohms between the low reference circuit terminal 7 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 10 and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage.
4. Verify the appropriate scan tool parameter is greater than 250 counts.
瀚慖f greater than the specified range, test the signal circuit terminal 9 for a short to ground.
5. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and the low reference circuit terminal. Verify the appropriate scan
tool parameter is less than 4 counts.
瀚慖f less than the specified range, test the signal circuit for a short to voltage or an open/high resistance.
6. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.
瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
7. Install a DMM between the actuator control circuit terminal 6 and ground. While monitoring the DMM, use the scan tool to command the
appropriate actuator from one direction to the other. The voltage on the control circuit should move from 0 volts in one direction to 5 volts in
the other direction and 2.5 volts in the at rest state.
瀚慖f the voltage does not change, test the control circuit for an open, short to voltage or short to ground. If circuit tests normal replace the
HVAC control module.
8. If all circuits test normal, replace the actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Inlet Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Air Inlet Valve Actuator Replacement)
* Mode Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
Automatic/Mode Valve Actuator Replacement)
* Temperature Valve Actuator Replacement - Left Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and
Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Left Side)
* Temperature Valve Actuator Replacement - Right Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service
and Repair/HVAC - Automatic/Temperature Valve Actuator Replacement - Right Side)
* Auxiliary Temperature Valve Actuator Replacement (Behr) (See: Heating and Air Conditioning/Air Door/Air Door Actuator /
Motor/Service and Repair/HVAC - Automatic/Auxiliary Temperature Valve Actuator Replacement (Behr))Auxiliary Temperature Valve
Actuator Replacement (Delphi) (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/HVAC -
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 293
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 293
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. With a master vehicle key, turn the ignition ON.
2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.
3. Turn the ignition OFF and wait 5 seconds.
4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.
5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.
6. Using the Red Emergency Button, notify the advisor that the Ignition Block on the vehicle has been cleared and to update the account status.
B320A
DTC B320A
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 B320A 39
- Front Door Window Motor Internal Electronic Failure
DTC B320A 42
- Front Door Window Motor Calibration Data Set Not Programmed
DTC B320A 4B
- Front Door Window Motor Calibration Not Learned
Diagnostic Fault Information
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. With a master vehicle key, turn the ignition ON.
2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.
3. Turn the ignition OFF and wait 5 seconds.
4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.
5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.
6. Using the Red Emergency Button, notify the advisor that the Ignition Block on the vehicle has been cleared and to update the account status.
B320A
DTC B320A
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 B320A 39
- Front Door Window Motor Internal Electronic Failure
DTC B320A 42
- Front Door Window Motor Calibration Data Set Not Programmed
DTC B320A 4B
- Front Door Window Motor Calibration Not Learned
Diagnostic Fault Information
Saturday, November 9, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1470
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1470
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48571 High Voltage Battery Pin Out Box
* EL-48900 HEV Safety Kit
Circuit/System Verification
Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V, and all readings should be within 1.5
V of each other.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect to the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
瀚慖f not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
瀚慖f not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor battery control module.
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48571 High Voltage Battery Pin Out Box
* EL-48900 HEV Safety Kit
Circuit/System Verification
Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V, and all readings should be within 1.5
V of each other.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect to the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
瀚慖f not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
瀚慖f not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor battery control module.
Thursday, November 7, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1305
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1305
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Turn the ignition OFF for 2 minutes.
3. Turn the ignition ON.
4. Operate the vehicle within the conditions for running and setting.
5. Retest for the DTC.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Perform the High Voltage Disabling () procedure for servicing at the drive motor generator control module cable connections.
2. Remove the 3-phase cable assembly from the PIM distribution box. Refer to Generator Control Module 3-Phase Cable Assembly
Replacement ().
3. Test the resistance to ground for each phase of the applicable drive motor generator by measuring between the following points with a DMM.
* Phase U terminal and chassis ground
* Phase V terminal and chassis ground
* Phase W terminal and chassis ground
瀚慖f less than infinite is measured, continue with Circuit/System Testing.
瀚慖f infinite resistance is measured, and prior to disabling the system the vehicle made no attempt to crank the engine, replace the PIM
and retest for DTCs. If P0BFD or P0BFE still resets, replace the drive motor generator assembly that corresponds to the set DTC.
瀚慖f infinite resistance is measured, and prior to disabling the system the engine initially starts but later stalls, replace the drive motor
generator assembly that corresponds to the set DTC and retest for DTCs. If P0BFD or P0BFE still resets, replace the PIM.
4. Remove the 3-phase cable assembly from the transmission. Refer to Generator Control Module 3-Phase Cable Assembly Replacement ().
Ensure the terminals are not contacting chassis ground.
5. Retest the resistance to ground for each phase of the 3-phase cable. Measure between the following points with a DMM.
* Phase U terminal and the shield ground
* Phase V terminal and the shield ground
* Phase W terminal and the shield ground
瀚慖f infinite resistance is measured, replace the applicable drive motor generator.
瀚慖f less than infinite is measured, replace the generator control module 3-phase cable assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Turn the ignition OFF for 2 minutes.
3. Turn the ignition ON.
4. Operate the vehicle within the conditions for running and setting.
5. Retest for the DTC.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Perform the High Voltage Disabling () procedure for servicing at the drive motor generator control module cable connections.
2. Remove the 3-phase cable assembly from the PIM distribution box. Refer to Generator Control Module 3-Phase Cable Assembly
Replacement ().
3. Test the resistance to ground for each phase of the applicable drive motor generator by measuring between the following points with a DMM.
* Phase U terminal and chassis ground
* Phase V terminal and chassis ground
* Phase W terminal and chassis ground
瀚慖f less than infinite is measured, continue with Circuit/System Testing.
瀚慖f infinite resistance is measured, and prior to disabling the system the vehicle made no attempt to crank the engine, replace the PIM
and retest for DTCs. If P0BFD or P0BFE still resets, replace the drive motor generator assembly that corresponds to the set DTC.
瀚慖f infinite resistance is measured, and prior to disabling the system the engine initially starts but later stalls, replace the drive motor
generator assembly that corresponds to the set DTC and retest for DTCs. If P0BFD or P0BFE still resets, replace the PIM.
4. Remove the 3-phase cable assembly from the transmission. Refer to Generator Control Module 3-Phase Cable Assembly Replacement ().
Ensure the terminals are not contacting chassis ground.
5. Retest the resistance to ground for each phase of the 3-phase cable. Measure between the following points with a DMM.
* Phase U terminal and the shield ground
* Phase V terminal and the shield ground
* Phase W terminal and the shield ground
瀚慖f infinite resistance is measured, replace the applicable drive motor generator.
瀚慖f less than infinite is measured, replace the generator control module 3-phase cable assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Wednesday, November 6, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1249
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1249
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
Ignition ON, command the battery pack vent fan speed to 60 percent duty cycle with a scan tool. The battery pack vent fan should turn ON after
approximately a 10 second delay.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must
be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
Note: Perform the Generator Battery Vent Fan test first
Generator Battery Vent Fan Test
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Ignition OFF, disconnect the generator battery vent fan.
3. Connect the 12 V battery.
4. Test for less than 5 ohm between the generator battery vent fan ground circuit terminal 3 and ground
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
5. Connect a test lamp between the control circuit terminal 2 and the ground circuit terminal 3.
6. Command the battery pack vent fan speed between 0 and 60 percent with a scan tool. The test lamp should turn ON and OFF after a 10
second delay.
瀚慖f the test lamp does not turn ON and OFF, refer to Generator Battery Vent Fan Relay test.
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
Ignition ON, command the battery pack vent fan speed to 60 percent duty cycle with a scan tool. The battery pack vent fan should turn ON after
approximately a 10 second delay.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must
be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
Note: Perform the Generator Battery Vent Fan test first
Generator Battery Vent Fan Test
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Ignition OFF, disconnect the generator battery vent fan.
3. Connect the 12 V battery.
4. Test for less than 5 ohm between the generator battery vent fan ground circuit terminal 3 and ground
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
5. Connect a test lamp between the control circuit terminal 2 and the ground circuit terminal 3.
6. Command the battery pack vent fan speed between 0 and 60 percent with a scan tool. The test lamp should turn ON and OFF after a 10
second delay.
瀚慖f the test lamp does not turn ON and OFF, refer to Generator Battery Vent Fan Relay test.
Tuesday, November 5, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1169
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1169
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
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
1. Verify that no hybrid powertrain control module (HPCM) or engine control module (ECM) DTCs are set that indicate generator, HPCM, or
battery failure, or that disable the high voltage.
瀚慖f the specified DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Engine running or autostop, observe the scan tool accessory DC power control module (APM) HPCM 300V Circuit parameter. The reading
should be between 225 V and 380 V.
瀚慖f not within the specified range, refer to Jump Assist ().
3. Ignition ON, observe the scan tool ACCM High Battery Voltage parameter. The reading should be between 225 V and 380 V.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Disable the high voltage, and remove the 3 phase cable cover. Refer to High Voltage Disabling ().
2. Ignition OFF, verify that the air conditioner compressor HVDC terminal bolts are present and are torqued to specification.
瀚慖f the bolts are missing or are not tight, replace any damaged components, install and tighten the bolts.
3. If all circuits test normal, replace the ACCM.
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 ACCM replacement, setup, and programming
P0AFB
DTC P0AFB
Diagnostic Instructions
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
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
1. Verify that no hybrid powertrain control module (HPCM) or engine control module (ECM) DTCs are set that indicate generator, HPCM, or
battery failure, or that disable the high voltage.
瀚慖f the specified DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Engine running or autostop, observe the scan tool accessory DC power control module (APM) HPCM 300V Circuit parameter. The reading
should be between 225 V and 380 V.
瀚慖f not within the specified range, refer to Jump Assist ().
3. Ignition ON, observe the scan tool ACCM High Battery Voltage parameter. The reading should be between 225 V and 380 V.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Disable the high voltage, and remove the 3 phase cable cover. Refer to High Voltage Disabling ().
2. Ignition OFF, verify that the air conditioner compressor HVDC terminal bolts are present and are torqued to specification.
瀚慖f the bolts are missing or are not tight, replace any damaged components, install and tighten the bolts.
3. If all circuits test normal, replace the ACCM.
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 ACCM replacement, setup, and programming
P0AFB
DTC P0AFB
Diagnostic Instructions
Monday, November 4, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1059
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1059
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
Ignition ON, observe the scan tool trailer brake controls user gain parameter. The reading should be between 0-100 percent, and change with
operating the gain switch up or gain switch down.
Circuit/System Testing
Note: These diagnostics are based on having no trailer connected.
1. Ignition ON, verify that DTC P2534 is not set.
瀚慖f the DTC is set, refer to DTC P2534 (See: P Code Charts/P2534/Wiring Systems and Power Management).
2. Ignition OFF, disconnect the harness connector at the solid state relay.
3. Test for less than 5 ohm between the ground circuit terminal B and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition OFF, verify that a test lamp illuminates between the B+ circuit terminal F 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. If the circuit tests normal and the
STUD 2 fuse is open, replace the trailer brake control relay.
5. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and ground.
瀚慖f test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control module.
6. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and B+.
瀚慖f test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the trailer brake control module.
7. Ignition ON, test for 3.2-4.1 V between the control circuit terminal C and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
8. Ignition ON, test for 3.2-4.1 V between the control circuit terminal A and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
9. Ignition ON, test for less than 1 V between the control circuit terminal D and ground.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, replace the trailer brake solid state relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
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
Ignition ON, observe the scan tool trailer brake controls user gain parameter. The reading should be between 0-100 percent, and change with
operating the gain switch up or gain switch down.
Circuit/System Testing
Note: These diagnostics are based on having no trailer connected.
1. Ignition ON, verify that DTC P2534 is not set.
瀚慖f the DTC is set, refer to DTC P2534 (See: P Code Charts/P2534/Wiring Systems and Power Management).
2. Ignition OFF, disconnect the harness connector at the solid state relay.
3. Test for less than 5 ohm between the ground circuit terminal B and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition OFF, verify that a test lamp illuminates between the B+ circuit terminal F 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. If the circuit tests normal and the
STUD 2 fuse is open, replace the trailer brake control relay.
5. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and ground.
瀚慖f test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control module.
6. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and B+.
瀚慖f test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the trailer brake control module.
7. Ignition ON, test for 3.2-4.1 V between the control circuit terminal C and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
8. Ignition ON, test for 3.2-4.1 V between the control circuit terminal A and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
9. Ignition ON, test for less than 1 V between the control circuit terminal D and ground.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, replace the trailer brake solid state relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Sunday, November 3, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1016
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1016
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
Ignition ON, observe the scan tool trailer brake controls user gain parameter. The reading should be between 0-100 percent, and change with
operating the gain switch up or gain switch down.
Circuit/System Testing
Note: These diagnostics are based on having no trailer connected.
1. Ignition ON, verify that DTC P2534 is not set.
瀚慖f the DTC is set, refer to DTC P2534 (See: P Code Charts/P2534/Wiring Systems and Power Management).
2. Ignition OFF, disconnect the harness connector at the solid state relay.
3. Test for less than 5 ohm between the ground circuit terminal B and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition OFF, verify that a test lamp illuminates between the B+ circuit terminal F 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. If the circuit tests normal and the
STUD 2 fuse is open, replace the trailer brake control relay.
5. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and ground.
瀚慖f test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer brake control
module.
6. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and B+.
瀚慖f test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the fuel pump/trailer brake control
module.
7. Ignition ON, test for 3.2-4.1 V between the control circuit terminal C and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
8. Ignition ON, test for 3.2-4.1 V between the control circuit terminal A and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
9. Ignition ON, test for less than 1 V between the control circuit terminal D and ground.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
10. If all circuits test normal, replace the trailer brake solid state relay.
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
Ignition ON, observe the scan tool trailer brake controls user gain parameter. The reading should be between 0-100 percent, and change with
operating the gain switch up or gain switch down.
Circuit/System Testing
Note: These diagnostics are based on having no trailer connected.
1. Ignition ON, verify that DTC P2534 is not set.
瀚慖f the DTC is set, refer to DTC P2534 (See: P Code Charts/P2534/Wiring Systems and Power Management).
2. Ignition OFF, disconnect the harness connector at the solid state relay.
3. Test for less than 5 ohm between the ground circuit terminal B and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition OFF, verify that a test lamp illuminates between the B+ circuit terminal F 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. If the circuit tests normal and the
STUD 2 fuse is open, replace the trailer brake control relay.
5. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and ground.
瀚慖f test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer brake control
module.
6. Ignition ON, verify that a test lamp does not illuminate between control circuit terminal E and B+.
瀚慖f test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the fuel pump/trailer brake control
module.
7. Ignition ON, test for 3.2-4.1 V between the control circuit terminal C and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
8. Ignition ON, test for 3.2-4.1 V between the control circuit terminal A and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
9. Ignition ON, test for less than 1 V between the control circuit terminal D and ground.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
10. If all circuits test normal, replace the trailer brake solid state relay.
Thursday, October 31, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1663
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1663
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Verify that DTC P1AE4, P0A80, P1ABE, or P1A0C is not set.
锟斤拷If any of the DTCs are set, Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Verify that DTC P1A21 is not set.
锟斤拷If DTC P1A21 is set, replace the drive motor generator battery control module.
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 drive motor generator battery control module
replacement, setup and programming
P1A50
DTC P1A4F, P1A50-P1A54, P1ADC, or P1ADD
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 Descriptor
DTC P1A4F
- Drive Motor 1 Control Module Not Programmed
DTC P1A50
- Drive Motor 1 Control Module Random Access Memory (RAM)
DTC P1A51
- Drive Motor 1 Control Module Read Only Memory (ROM)
DTC P1A52
- Drive Motor 2 Control Module Not Programmed
DTC P1A53
- Drive Motor 2 Control Module Random Access Memory (RAM)
DTC P1A54
- Drive Motor 2 Control Module Read Only Memory (ROM)
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Verify that DTC P1AE4, P0A80, P1ABE, or P1A0C is not set.
锟斤拷If any of the DTCs are set, Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Verify that DTC P1A21 is not set.
锟斤拷If DTC P1A21 is set, replace the drive motor generator battery control module.
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 drive motor generator battery control module
replacement, setup and programming
P1A50
DTC P1A4F, P1A50-P1A54, P1ADC, or P1ADD
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 Descriptor
DTC P1A4F
- Drive Motor 1 Control Module Not Programmed
DTC P1A50
- Drive Motor 1 Control Module Random Access Memory (RAM)
DTC P1A51
- Drive Motor 1 Control Module Read Only Memory (ROM)
DTC P1A52
- Drive Motor 2 Control Module Not Programmed
DTC P1A53
- Drive Motor 2 Control Module Random Access Memory (RAM)
DTC P1A54
- Drive Motor 2 Control Module Read Only Memory (ROM)
Wednesday, October 30, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1623
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1623
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48458 Pre-Charge Test Tool
* EL-48569 Terminal Covers
Circuit/System Verification
Important: DTC P1AE7 must test and pass before performing this diagnostic procedure.
1. Inspect for DTC P1AE7.
锟斤拷If the DTC is set, the loss of isolation has occurred within the drive motor generator battery. Diagnose this concern first. Refer to DTC
P1AE6 or P1AE7 (See: P Code Charts/P1AE6).
2. Inspect for DTCs P0A78, P0A79, P0BFD, P0BFE, P0C01, or P0C04.
锟斤拷If any of the DTCs are set, the loss of isolation has occurred within the 3-phase components. Diagnose this concern first. Refer to
Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List -
Vehicle).
3. Clear the DTC information.
4. Turn the ignition OFF for 1 minute.
5. Turn the ignition ON.
6. Operate the vehicle within the Conditions for Running the DTC.
7. Retest for DTCs P1AF0 and P1AF2.
Circuit/System Testing
Important: DTC P1AE7 must test and pass before performing this diagnostic procedure.
1. Inspect for DTC P1AE7.
锟斤拷If the DTC is set, the loss of isolation has occurred within the drive motor generator battery. Refer to DTC P1AE6 or P1AE7 (See: P
Code Charts/P1AE6).
2. Inspect for DTCs P0A78, P0A79, P0BFD, P0BFE, P0C01, or P0C04.
锟斤拷If any of the DTCs are set, the loss of isolation has occurred within the 3-phase components. Diagnose this concern first. Refer to
Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List -
Vehicle).
3. Place the vehicle in the following condition:
* Ignition OFF for at least 2 minutes
* Hood Closed
* Transmission in Park
Important: The following sequence must be accomplished within the time stated in Conditions for Setting the DTC.
4. Turn the ignition ON with the engine OFF.
Observe and record the scan tool HPCM 300V Circuit Voltage parameter. High voltage should be enabled and Hybrid Battery voltage
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48458 Pre-Charge Test Tool
* EL-48569 Terminal Covers
Circuit/System Verification
Important: DTC P1AE7 must test and pass before performing this diagnostic procedure.
1. Inspect for DTC P1AE7.
锟斤拷If the DTC is set, the loss of isolation has occurred within the drive motor generator battery. Diagnose this concern first. Refer to DTC
P1AE6 or P1AE7 (See: P Code Charts/P1AE6).
2. Inspect for DTCs P0A78, P0A79, P0BFD, P0BFE, P0C01, or P0C04.
锟斤拷If any of the DTCs are set, the loss of isolation has occurred within the 3-phase components. Diagnose this concern first. Refer to
Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List -
Vehicle).
3. Clear the DTC information.
4. Turn the ignition OFF for 1 minute.
5. Turn the ignition ON.
6. Operate the vehicle within the Conditions for Running the DTC.
7. Retest for DTCs P1AF0 and P1AF2.
Circuit/System Testing
Important: DTC P1AE7 must test and pass before performing this diagnostic procedure.
1. Inspect for DTC P1AE7.
锟斤拷If the DTC is set, the loss of isolation has occurred within the drive motor generator battery. Refer to DTC P1AE6 or P1AE7 (See: P
Code Charts/P1AE6).
2. Inspect for DTCs P0A78, P0A79, P0BFD, P0BFE, P0C01, or P0C04.
锟斤拷If any of the DTCs are set, the loss of isolation has occurred within the 3-phase components. Diagnose this concern first. Refer to
Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List -
Vehicle).
3. Place the vehicle in the following condition:
* Ignition OFF for at least 2 minutes
* Hood Closed
* Transmission in Park
Important: The following sequence must be accomplished within the time stated in Conditions for Setting the DTC.
4. Turn the ignition ON with the engine OFF.
Observe and record the scan tool HPCM 300V Circuit Voltage parameter. High voltage should be enabled and Hybrid Battery voltage
Tuesday, October 29, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1562
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1562
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48458 HV Precharge Tester
* EL-48569 Terminal Covers
* EL-48900 HEV Safety Kit
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must
be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the air conditioning control module terminal X4 B+ (300 V) and terminal X5 ground (300 V).
3. Test for infinite resistance between the terminals listed below and ground;
* X4 B+ (300 V) cable
* X5 ground (300 V) cable
锟斤拷If less than the specified value, replace the air conditioning control module assembly.
4. Test for greater than 50k ohm between the B+ (300 V) terminals X4 and ground (300 V) X5.
锟斤拷If less than the specified range, test the circuits for a short between the circuits. If the circuits test normal, replace the air conditioning
control module assembly.
5. Connect the EL-48458 at the drive motor generator power inverter module. Refer to the EL-48458 installation procedure located in High
Voltage System Diagnosis (EL-48458) ().
Note: Install a manual disconnect lever with a verified good fuse or a new manual disconnect lever.
6. Install the manual disconnect lever.
7. Connect the 12 V battery.
8. Ignition ON, attempt to precharge the high voltage system by moving the high voltage contactor relay switch on the tester to the closed
position. Verify that the hi-voltage greater than 60 V LED does not illuminate.
锟斤拷If the LED illuminates, replace the drive motor generator power inverter module.
Note: The following tests require wearing personal protection equipment (PPE) gloves.
9. Ignition OFF, remove the EL-48458. Refer to the removal procedure located in High Voltage System Diagnosis (EL-48458) ().
10. Ignition OFF, disconnect the X1 B+ (300 V) and X2 ground (300 V) cables from the drive motor generator battery.
11. Test for infinite resistance between the terminals listed below and ground
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48458 HV Precharge Tester
* EL-48569 Terminal Covers
* EL-48900 HEV Safety Kit
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must
be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the air conditioning control module terminal X4 B+ (300 V) and terminal X5 ground (300 V).
3. Test for infinite resistance between the terminals listed below and ground;
* X4 B+ (300 V) cable
* X5 ground (300 V) cable
锟斤拷If less than the specified value, replace the air conditioning control module assembly.
4. Test for greater than 50k ohm between the B+ (300 V) terminals X4 and ground (300 V) X5.
锟斤拷If less than the specified range, test the circuits for a short between the circuits. If the circuits test normal, replace the air conditioning
control module assembly.
5. Connect the EL-48458 at the drive motor generator power inverter module. Refer to the EL-48458 installation procedure located in High
Voltage System Diagnosis (EL-48458) ().
Note: Install a manual disconnect lever with a verified good fuse or a new manual disconnect lever.
6. Install the manual disconnect lever.
7. Connect the 12 V battery.
8. Ignition ON, attempt to precharge the high voltage system by moving the high voltage contactor relay switch on the tester to the closed
position. Verify that the hi-voltage greater than 60 V LED does not illuminate.
锟斤拷If the LED illuminates, replace the drive motor generator power inverter module.
Note: The following tests require wearing personal protection equipment (PPE) gloves.
9. Ignition OFF, remove the EL-48458. Refer to the removal procedure located in High Voltage System Diagnosis (EL-48458) ().
10. Ignition OFF, disconnect the X1 B+ (300 V) and X2 ground (300 V) cables from the drive motor generator battery.
11. Test for infinite resistance between the terminals listed below and ground
Monday, October 28, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1470
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1470
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48571 High Voltage Battery Pin Out Box
* EL-48900 HEV Safety Kit
Circuit/System Verification
Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V, and all readings should be within 1.5
V of each other.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect to the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor battery control module.
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48571 High Voltage Battery Pin Out Box
* EL-48900 HEV Safety Kit
Circuit/System Verification
Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V, and all readings should be within 1.5
V of each other.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect to the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor battery control module.
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