2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 999
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and the signal circuit terminal 6.
瀚慖f not within the specified range, test the signal circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace
the EBCM.
5. Ignition OFF, disconnect the harness connector at the EBCM.
6. Test for infinite resistance between the signal circuit terminal 9 and ground.
瀚慖f not the specified value, test the signal circuit for a short to ground.
7. Connect the harness connector at the EBCM.
Note: When measuring voltage, the voltage values are based on a battery charge of 12.5 V and the steering wheel is in the center position.
8. Ignition ON, at the steering angle sensor connector harness, test for 6.8-11 V between the signal circuit terminals listed below and ground.
* Phase A terminal 3
* Phase B terminal 4
* Phase C terminal 5
瀚慖f less than the specified range, test the appropriate signal circuit for a short to ground or an open/high resistance. If the circuit tests
normal, replace the EBCM.
瀚慖f greater than the specified range, test the appropriate signal circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
9. If the circuits test normal, replace the steering angle sensor.
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
C0711
DTC C0711
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 C0711 00
- Level Control Air Pressure Sensor Malfunction Signal Invalid
Diagnostic Fault Information
Circuit Description
The automatic level control (ALC) pressure sensor sends a voltage signal to the electronic suspension control module (ESCM) that corresponds to a
pressure within the range of 30-180 psi.
Conditions for Running the DTC
Showing posts with label Cadillac Truck Escalade ESV AWD V8-6.2L Diagnostic Trouble Codes. Show all posts
Showing posts with label Cadillac Truck Escalade ESV AWD V8-6.2L Diagnostic Trouble Codes. Show all posts
Tuesday, November 19, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 998
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 998
Action Taken When the DTC Sets
* The EBCM disables the vehicle stability enhancement system for the duration of the ignition cycle.
* The driver information center displays the Service Stability System message.
* The antilock brake system (ABS) remains functional.
* The Stability indicator turns ON.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
* During diagnosis, park the vehicle on a level surface.
* The vehicle should not pull in either direction while driving straight on a level surface.
* Find out from the customer the conditions under which the DTC was set. This information will help to duplicate the failure.
* The snapshot function on the scan tool can help find an intermittent DTC.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Ignition ON, observe the scan tool Steering Wheel Position parameter. The reading should correspond with the actual steering wheel position
as the steering wheel is turned through its entire range of motion.
瀚慖f the parameter drops out or does not correspond with the actual steering wheel position, refer to Circuit/System Testing.
2. Observe the scan tool Digital HWPS Index Pulse parameter. The parameter should cycle between Low and High as the steering wheel is
centered and then turned through its entire range of motion.
瀚慖f the parameter does not cycle between the specified values, refer to Circuit/System Testing.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the steering angle sensor.
2. Test for less than 20 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
Action Taken When the DTC Sets
* The EBCM disables the vehicle stability enhancement system for the duration of the ignition cycle.
* The driver information center displays the Service Stability System message.
* The antilock brake system (ABS) remains functional.
* The Stability indicator turns ON.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
* During diagnosis, park the vehicle on a level surface.
* The vehicle should not pull in either direction while driving straight on a level surface.
* Find out from the customer the conditions under which the DTC was set. This information will help to duplicate the failure.
* The snapshot function on the scan tool can help find an intermittent DTC.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Ignition ON, observe the scan tool Steering Wheel Position parameter. The reading should correspond with the actual steering wheel position
as the steering wheel is turned through its entire range of motion.
瀚慖f the parameter drops out or does not correspond with the actual steering wheel position, refer to Circuit/System Testing.
2. Observe the scan tool Digital HWPS Index Pulse parameter. The parameter should cycle between Low and High as the steering wheel is
centered and then turned through its entire range of motion.
瀚慖f the parameter does not cycle between the specified values, refer to Circuit/System Testing.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the steering angle sensor.
2. Test for less than 20 ohm between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 997
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 997
3. If all circuits test normal, test or replace the brake booster sensor or steering angle sensor as required.
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)
* Power Brake Booster Vacuum Sensor Replacement (See: Brakes and Traction Control/Power Brake Assist/Brake Booster Vacuum
Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup and programming
Antilock Brake System - Non-Hybrid Greater than/Equal to 3900 kg (8600 lb) GVW
DTC C0710
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 C0710 17
- Steering Position Signal Shape/waveform Failure
DTC C0710 55
- Steering Position Signal Expected Number of Transitions/events not Reached
DTC C0710 5A
- Steering Position Signal Plausibility Failure
DTC C0710 0F
- Steering Position Signal Erratic
Diagnostic Fault Information
Circuit/System Description
The electronic brake control module (EBCM) applies a 5 V reference and provides a low reference to the steering wheel angle sensor. The EBCM
monitors the signal circuit and the three phase circuits to determine the steering wheel position. The EBCM receives three signal inputs from the
steering angle sensor. The Phase C Index Pulse signal is only High when the steering wheel is centered or within a few degrees of the straight ahead
position. The 2 input signals Phase A and Phase B are approximately 90 degrees out of phase. Once calibrated, the EBCM dynamically interprets
the relationship between the Phase A and Phase B inputs, and determines the position of the steering wheel and the direction of the steering wheel
rotation.
Conditions for Running the DTC
* The ignition is ON.
* Ignition voltage is greater than 9 V.
Conditions for Setting the DTC
* Opens, short to ground, or short to voltage.
* The calculated steering angle from the steering angle sensor does not correlate with the steering angle calculated from the yaw rate.
3. If all circuits test normal, test or replace the brake booster sensor or steering angle sensor as required.
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)
* Power Brake Booster Vacuum Sensor Replacement (See: Brakes and Traction Control/Power Brake Assist/Brake Booster Vacuum
Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup and programming
Antilock Brake System - Non-Hybrid Greater than/Equal to 3900 kg (8600 lb) GVW
DTC C0710
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 C0710 17
- Steering Position Signal Shape/waveform Failure
DTC C0710 55
- Steering Position Signal Expected Number of Transitions/events not Reached
DTC C0710 5A
- Steering Position Signal Plausibility Failure
DTC C0710 0F
- Steering Position Signal Erratic
Diagnostic Fault Information
Circuit/System Description
The electronic brake control module (EBCM) applies a 5 V reference and provides a low reference to the steering wheel angle sensor. The EBCM
monitors the signal circuit and the three phase circuits to determine the steering wheel position. The EBCM receives three signal inputs from the
steering angle sensor. The Phase C Index Pulse signal is only High when the steering wheel is centered or within a few degrees of the straight ahead
position. The 2 input signals Phase A and Phase B are approximately 90 degrees out of phase. Once calibrated, the EBCM dynamically interprets
the relationship between the Phase A and Phase B inputs, and determines the position of the steering wheel and the direction of the steering wheel
rotation.
Conditions for Running the DTC
* The ignition is ON.
* Ignition voltage is greater than 9 V.
Conditions for Setting the DTC
* Opens, short to ground, or short to voltage.
* The calculated steering angle from the steering angle sensor does not correlate with the steering angle calculated from the yaw rate.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 996
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 996
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. Ignition ON, observe the scan tool Steering Wheel Position parameter. The reading should correspond with the actual steering wheel position
as the steering wheel is turned through its entire range of motion.
2. Observe the scan tool Digital HWPS Index Pulse parameter. The parameter should cycle between Low and High as the steering wheel is
centered and then turned through its entire range of motion.
Circuit/System Testing
Note: If only DTC C0710 is set refer to Only DTC C0710 Set, if both DTC C0710 and C1100 are set, refer to Both DTC C0710 and C1100 Set.
Only DTC C0710 Set
1. Ignition OFF, disconnect the harness connector at the steering angle sensor.
2. Ignition OFF, scan tool disconnected, all vehicle systems OFF, this may take up to 2 minutes, test for less than 20 ohm between the low
reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and the signal circuit terminal 6.
瀚慖f not within the specified range, test the signal circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace
the EBCM.
5. Ignition OFF, disconnect the harness connector at the EBCM.
6. Test for infinite resistance between the signal circuit terminal 4 and ground.
瀚慖f not the specified value, test the signal circuit for a short to ground.
7. Connect the harness connector at the EBCM.
Note: When measuring voltage, the voltage values are based on a battery charge of 12.5 V and the steering wheel is in the center position.
8. Ignition ON, at the steering angle sensor connector harness, test for 6.8-11 V between the signal circuit terminals listed below and ground.
* Phase A terminal 3
* Phase B terminal 4
* Phase C terminal 5
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
9. If the circuits test normal, replace the steering angle sensor.
Both DTC C0710 and C1100 Set
1. Ignition OFF, disconnect the harness connector at the brake booster vacuum sensor and the steering angle sensor.
2. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminals listed below and ground.
* Terminal 3 at the brake booster vacuum sensor
* Terminal 1 at the steering angle sensor
瀚慖f less than the specified range, test both 5 V reference circuits for a short to ground. If the circuits test normal, replace the EBCM.
瀚慖f greater than the specified range, test both 5 V reference circuits for a short to voltage. If the circuits test normal, replace the EBCM.
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. Ignition ON, observe the scan tool Steering Wheel Position parameter. The reading should correspond with the actual steering wheel position
as the steering wheel is turned through its entire range of motion.
2. Observe the scan tool Digital HWPS Index Pulse parameter. The parameter should cycle between Low and High as the steering wheel is
centered and then turned through its entire range of motion.
Circuit/System Testing
Note: If only DTC C0710 is set refer to Only DTC C0710 Set, if both DTC C0710 and C1100 are set, refer to Both DTC C0710 and C1100 Set.
Only DTC C0710 Set
1. Ignition OFF, disconnect the harness connector at the steering angle sensor.
2. Ignition OFF, scan tool disconnected, all vehicle systems OFF, this may take up to 2 minutes, test for less than 20 ohm between the low
reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and the signal circuit terminal 6.
瀚慖f not within the specified range, test the signal circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace
the EBCM.
5. Ignition OFF, disconnect the harness connector at the EBCM.
6. Test for infinite resistance between the signal circuit terminal 4 and ground.
瀚慖f not the specified value, test the signal circuit for a short to ground.
7. Connect the harness connector at the EBCM.
Note: When measuring voltage, the voltage values are based on a battery charge of 12.5 V and the steering wheel is in the center position.
8. Ignition ON, at the steering angle sensor connector harness, test for 6.8-11 V between the signal circuit terminals listed below and ground.
* Phase A terminal 3
* Phase B terminal 4
* Phase C terminal 5
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
9. If the circuits test normal, replace the steering angle sensor.
Both DTC C0710 and C1100 Set
1. Ignition OFF, disconnect the harness connector at the brake booster vacuum sensor and the steering angle sensor.
2. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminals listed below and ground.
* Terminal 3 at the brake booster vacuum sensor
* Terminal 1 at the steering angle sensor
瀚慖f less than the specified range, test both 5 V reference circuits for a short to ground. If the circuits test normal, replace the EBCM.
瀚慖f greater than the specified range, test both 5 V reference circuits for a short to voltage. If the circuits test normal, replace the EBCM.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 995
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 995
Circuit/System Description
The electronic brake control module (EBCM) applies a 5 V reference and provides a low reference to the steering wheel angle sensor and the brake
booster vacuum sensor. The EBCM monitors the signal circuit and the three phase circuits to determine the steering wheel position. The EBCM
receives three signal inputs from the steering angle sensor. The Phase C Index Pulse signal is only High when the steering wheel is centered or
within a few degrees of the straight ahead position. The 2 input signals Phase A and Phase B are approximately 90 degrees out of phase. Once
calibrated, the EBCM dynamically interprets the relationship between the Phase A and Phase B inputs, and determines the position of the steering
wheel and the direction of the steering wheel rotation.
Conditions for Running the DTC
* The ignition is ON.
* Ignition voltage is greater than 9 V.
Conditions for Setting the DTC
* Opens, short to ground, or short to voltage.
* The calculated steering angle from the steering angle sensor does not correlate with the steering angle calculated from the yaw rate.
Action Taken When the DTC Sets
* The EBCM disables the vehicle stability enhancement system (VSES) for the duration of the ignition cycle.
* The driver information center (DIC) displays the Service Stability System message.
* The antilock brake system (ABS) remains functional.
* The VSES Caution indicator turns ON.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
* During diagnosis, park the vehicle on a level surface.
* The vehicle should not pull in either direction while driving straight on a level surface.
* Find out from the customer the conditions under which the DTC was set. This information will help to duplicate the failure.
* The snapshot function on the scan tool can help find an intermittent DTC.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Circuit/System Description
The electronic brake control module (EBCM) applies a 5 V reference and provides a low reference to the steering wheel angle sensor and the brake
booster vacuum sensor. The EBCM monitors the signal circuit and the three phase circuits to determine the steering wheel position. The EBCM
receives three signal inputs from the steering angle sensor. The Phase C Index Pulse signal is only High when the steering wheel is centered or
within a few degrees of the straight ahead position. The 2 input signals Phase A and Phase B are approximately 90 degrees out of phase. Once
calibrated, the EBCM dynamically interprets the relationship between the Phase A and Phase B inputs, and determines the position of the steering
wheel and the direction of the steering wheel rotation.
Conditions for Running the DTC
* The ignition is ON.
* Ignition voltage is greater than 9 V.
Conditions for Setting the DTC
* Opens, short to ground, or short to voltage.
* The calculated steering angle from the steering angle sensor does not correlate with the steering angle calculated from the yaw rate.
Action Taken When the DTC Sets
* The EBCM disables the vehicle stability enhancement system (VSES) for the duration of the ignition cycle.
* The driver information center (DIC) displays the Service Stability System message.
* The antilock brake system (ABS) remains functional.
* The VSES Caution indicator turns ON.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
* During diagnosis, park the vehicle on a level surface.
* The vehicle should not pull in either direction while driving straight on a level surface.
* Find out from the customer the conditions under which the DTC was set. This information will help to duplicate the failure.
* The snapshot function on the scan tool can help find an intermittent DTC.
Reference Information
Schematic Reference
Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 994
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 994
4. Test or replace the last remaining suspect suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning)for ESC module replacement, setup, and
programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
Antilock Brake System - Non-Hybrid Less than 3900 kg (8600 lb) GVW
DTC C0710
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 C0710 00
- Steering Position Signal
DTC C0710 5A
- Steering Position Signal Plausibility Failure
Diagnostic Fault Information
4. Test or replace the last remaining suspect suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning)for ESC module replacement, setup, and
programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
Antilock Brake System - Non-Hybrid Less than 3900 kg (8600 lb) GVW
DTC C0710
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 C0710 00
- Steering Position Signal
DTC C0710 5A
- Steering Position Signal Plausibility Failure
Diagnostic Fault Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 993
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 993
The electronic suspension control (ESC) module provides a common regulated reference voltage of approximately 5 volts to all of the position
sensors. The ESC module monitors this power supply for a malfunction that could prevent it from correctly regulating the supply voltage.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The ESC module senses suspension position sensor supply voltage under 4.75 volts or over 5.25 volts.
* The condition is detected for 1 second in 4 consecutive ignition cycles.
Action Taken When the DTC Sets
* Commands speed dependent damping system and normal force signals to the default state.
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
* A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
* The ESC module senses the correct sensor supply voltage.
* The IPC clearing DTC feature.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for Scan Tool Information
Circuit/System Verification
Ignition ON, observe the scan tool Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at all 4 suspension position sensors.
2. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A and ground at each sensor connector.
瀚慖f less than the specified range, test the 5 volt reference circuit for a short to ground or an open/high resistance. If all circuits test normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
3. Reinstall each sensor, one at a time, while verifying for 4.75-5.25 volts between the 5 volt reference circuit terminal A and ground of the last
sensor connector to be connected.
瀚慖f the voltage is out of the range when one of the 3 sensors are connected, test or replace the suspect suspension position sensor.
The electronic suspension control (ESC) module provides a common regulated reference voltage of approximately 5 volts to all of the position
sensors. The ESC module monitors this power supply for a malfunction that could prevent it from correctly regulating the supply voltage.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The ESC module senses suspension position sensor supply voltage under 4.75 volts or over 5.25 volts.
* The condition is detected for 1 second in 4 consecutive ignition cycles.
Action Taken When the DTC Sets
* Commands speed dependent damping system and normal force signals to the default state.
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
* A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
* The ESC module senses the correct sensor supply voltage.
* The IPC clearing DTC feature.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for Scan Tool Information
Circuit/System Verification
Ignition ON, observe the scan tool Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at all 4 suspension position sensors.
2. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A and ground at each sensor connector.
瀚慖f less than the specified range, test the 5 volt reference circuit for a short to ground or an open/high resistance. If all circuits test normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
3. Reinstall each sensor, one at a time, while verifying for 4.75-5.25 volts between the 5 volt reference circuit terminal A and ground of the last
sensor connector to be connected.
瀚慖f the voltage is out of the range when one of the 3 sensors are connected, test or replace the suspect suspension position sensor.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 992
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 992
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 ESCM.
7. If all circuits test normal, test or replace the ALC compressor.
Component Testing
1. Ignition OFF, disconnect the air compressor harness connector.
2. Test the exhaust valve for 18-45 ohms between the control terminal and the battery positive terminal.
瀚慖f not within the specified range, replace the air compressor.
3. Test for infinite resistance between the control terminal and ground.
瀚慖f less than the specified value, replace the air compressor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Compressor Replacement (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Compressor/Pump/Service and Repair)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESCM replacement, setup, and programming
C0696
DTC C0696
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 C0696 00
- Position Sensor Overcurrent
Diagnostic Fault Information
Circuit/System Description
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 ESCM.
7. If all circuits test normal, test or replace the ALC compressor.
Component Testing
1. Ignition OFF, disconnect the air compressor harness connector.
2. Test the exhaust valve for 18-45 ohms between the control terminal and the battery positive terminal.
瀚慖f not within the specified range, replace the air compressor.
3. Test for infinite resistance between the control terminal and ground.
瀚慖f less than the specified value, replace the air compressor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Compressor Replacement (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Compressor/Pump/Service and Repair)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESCM replacement, setup, and programming
C0696
DTC C0696
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 C0696 00
- Position Sensor Overcurrent
Diagnostic Fault Information
Circuit/System Description
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 991
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 991
Conditions for Running the DTC
* Battery voltage is between 9-16 volts.
* The exhaust valve is commanded ON.
Conditions for Setting the DTC
* The exhaust solenoid control circuit is shorted to voltage, ground, or open when solenoid activation is commanded ON for 2.5 seconds.
* The exhaust solenoid supply voltage circuit is shorted to ground or open when solenoid activation is commanded ON for 5 seconds.
Action Taken When the DTC Sets
* The electronic suspension control system will be inoperative.
* The SERVICE SUSPENSION SYSTEM message will be displayed.
Conditions for Clearing the MIL/DTC
* DTC C0660 will change from a current DTC to a history DTC on the next ignition cycle.
* DTC C0660 will be cleared from history after 50 ignition cycles.
Reference Information
Schematic Reference
Automatic Level Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Automatic Level Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Automatic Level Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Automatic Level Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, command the Exhaust Valve ON and OFF with the scan tool output control. The exhaust solenoid valve should turn ON and OFF
with each command.
Circuit/System Testing
1. Ignition OFF, disconnect the automatic level control (ALC) compressor exhaust solenoid.
2. Ignition ON, verify that a test lamp does not illuminate between the solenoid control circuit terminal C at the connector 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 B and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuits for a short to ground or an open/high resistance. If the circuit tests normal, test or
replace the ALC compressor.
4. Connect a test lamp between the B+ circuit terminal B and the control circuit terminal C.
5. With a scan tool, clear all ALC DTCs.
6. Command the exhaust solenoid ON and OFF. 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 ESCM.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts.
* The exhaust valve is commanded ON.
Conditions for Setting the DTC
* The exhaust solenoid control circuit is shorted to voltage, ground, or open when solenoid activation is commanded ON for 2.5 seconds.
* The exhaust solenoid supply voltage circuit is shorted to ground or open when solenoid activation is commanded ON for 5 seconds.
Action Taken When the DTC Sets
* The electronic suspension control system will be inoperative.
* The SERVICE SUSPENSION SYSTEM message will be displayed.
Conditions for Clearing the MIL/DTC
* DTC C0660 will change from a current DTC to a history DTC on the next ignition cycle.
* DTC C0660 will be cleared from history after 50 ignition cycles.
Reference Information
Schematic Reference
Automatic Level Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Automatic Level Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Automatic Level Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Automatic Level Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, command the Exhaust Valve ON and OFF with the scan tool output control. The exhaust solenoid valve should turn ON and OFF
with each command.
Circuit/System Testing
1. Ignition OFF, disconnect the automatic level control (ALC) compressor exhaust solenoid.
2. Ignition ON, verify that a test lamp does not illuminate between the solenoid control circuit terminal C at the connector 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 B and ground.
瀚慖f the test lamp does not illuminate, test the B+ circuits for a short to ground or an open/high resistance. If the circuit tests normal, test or
replace the ALC compressor.
4. Connect a test lamp between the B+ circuit terminal B and the control circuit terminal C.
5. With a scan tool, clear all ALC DTCs.
6. Command the exhaust solenoid ON and OFF. 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 ESCM.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 990
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 990
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0660
DTC C0660
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 C0660 01
- Level Control Exhaust Circuit Short to Battery
DTC C0660 06
- Level Control Exhaust Circuit Short to Ground or Open Circuit
Diagnostic Fault Information
Circuit Description
The electronic suspension control module (ESCM) adjusts the vehicle suspension ride height. The ESCM determines the height of the vehicle based
on signals from the height sensors. The ESCM raises and lowers the vehicle in order to keep the vehicle level by controlling the exhaust valve and
air compressor control circuits.
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0660
DTC C0660
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 C0660 01
- Level Control Exhaust Circuit Short to Battery
DTC C0660 06
- Level Control Exhaust Circuit Short to Ground or Open Circuit
Diagnostic Fault Information
Circuit Description
The electronic suspension control module (ESCM) adjusts the vehicle suspension ride height. The ESCM determines the height of the vehicle based
on signals from the height sensors. The ESCM raises and lowers the vehicle in order to keep the vehicle level by controlling the exhaust valve and
air compressor control circuits.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 99
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 99
DTC B0021 04
- Passenger Side Seat Air Bag Deployment Loop Open Circuit
DTC B0021 0D
- Passenger Side Seat Air Bag Deployment Loop Resistance Above Threshold
DTC B0021 0E
- Passenger Side Seat Air Bag Deployment Loop Resistance Below Threshold
DTC B0022 01
- RF Pretensioner Deployment Loop Short to Battery
DTC B0022 02
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Short to Ground
DTC B0022 04
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Open Circuit
DTC B0022 0D
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Above Threshold
DTC B0022 0E
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Below Threshold
DTC B0023 01
- Right Roof Rail Air Bag Deployment Loop Short to Battery
DTC B0023 02
- Right Roof Rail Air Bag Deployment Loop Short to Ground
DTC B0023 04
- Right Roof Rail Air Bag Deployment Loop Open Circuit
DTC B0023 0D
- Right Roof Rail Air Bag Deployment Loop Resistance Above Threshold
DTC B0023 0E
- Right Roof Rail Air Bag Deployment Loop Resistance Below Threshold
Diagnostic Fault Information
DTC B0021 04
- Passenger Side Seat Air Bag Deployment Loop Open Circuit
DTC B0021 0D
- Passenger Side Seat Air Bag Deployment Loop Resistance Above Threshold
DTC B0021 0E
- Passenger Side Seat Air Bag Deployment Loop Resistance Below Threshold
DTC B0022 01
- RF Pretensioner Deployment Loop Short to Battery
DTC B0022 02
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Short to Ground
DTC B0022 04
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Open Circuit
DTC B0022 0D
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Above Threshold
DTC B0022 0E
- Passenger Seat Belt Retractor Pretensioner Deployment Loop Resistance Below Threshold
DTC B0023 01
- Right Roof Rail Air Bag Deployment Loop Short to Battery
DTC B0023 02
- Right Roof Rail Air Bag Deployment Loop Short to Ground
DTC B0023 04
- Right Roof Rail Air Bag Deployment Loop Open Circuit
DTC B0023 0D
- Right Roof Rail Air Bag Deployment Loop Resistance Above Threshold
DTC B0023 0E
- Right Roof Rail Air Bag Deployment Loop Resistance Below Threshold
Diagnostic Fault Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 989
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 989
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information
Circuit/System Verification
Ignition ON, observe the scan tool Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information
Circuit/System Verification
Ignition ON, observe the scan tool Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 988
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 988
DTC C0615 08
- Left Front Position Sensor Circuit - Signal Invalid
DTC C0615 55
- Left Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0620 08
- Right Front Position Sensor Circuit - Signal Invalid
DTC C0620 55
- Right Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0625 08
- Left Rear Position Sensor Circuit - Signal Invalid
DTC C0625 55
- Left Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0630 08
- Right Rear Position Sensor Circuit - Signal Invalid
DTC C0630 55
- Right Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
Diagnostic Fault Information
Circuit/System Description
The electronic suspension control (ESC) module supplies a 5 volt reference signal to each suspension position sensor. The suspension position
sensors supply an voltage signal of 0.35-4.75 volts to the ESC module which represents the position between the body and the wheel. The sensors
are also grounded through the ESC module.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The DTC is set when the ESC module measures a position sensor signal voltage below 0.35 volt or above 4.75 volts for more than 1 second
while the vehicle is operated under normal driving conditions.
* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.
Action Taken When the DTC Sets
* The ESC will enter the speed dependent damping mode.
* Both left and right normal force outputs will be set to the default output states.
DTC C0615 08
- Left Front Position Sensor Circuit - Signal Invalid
DTC C0615 55
- Left Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0620 08
- Right Front Position Sensor Circuit - Signal Invalid
DTC C0620 55
- Right Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0625 08
- Left Rear Position Sensor Circuit - Signal Invalid
DTC C0625 55
- Left Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0630 08
- Right Rear Position Sensor Circuit - Signal Invalid
DTC C0630 55
- Right Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
Diagnostic Fault Information
Circuit/System Description
The electronic suspension control (ESC) module supplies a 5 volt reference signal to each suspension position sensor. The suspension position
sensors supply an voltage signal of 0.35-4.75 volts to the ESC module which represents the position between the body and the wheel. The sensors
are also grounded through the ESC module.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The DTC is set when the ESC module measures a position sensor signal voltage below 0.35 volt or above 4.75 volts for more than 1 second
while the vehicle is operated under normal driving conditions.
* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.
Action Taken When the DTC Sets
* The ESC will enter the speed dependent damping mode.
* Both left and right normal force outputs will be set to the default output states.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 987
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 987
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0630
DTC C0615, C0620, C0625, or C0630
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.
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0630
DTC C0615, C0620, C0625, or C0630
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.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 986
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 986
Circuit/System Description
The electronic suspension control (ESC) module supplies a 5 volt reference signal to each suspension position sensor. The suspension position
sensors supply an voltage signal of 0.35-4.75 volts to the ESC module which represents the position between the body and the wheel. The sensors
are also grounded through the ESC module.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The DTC is set when the ESC module measures a position sensor signal voltage below 0.35 volt or above 4.75 volts for more than 1 second
while the vehicle is operated under normal driving conditions.
* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.
Action Taken When the DTC Sets
* The ESC will enter the speed dependent damping mode.
* Both left and right normal force outputs will be set to the default output states.
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information
Circuit/System Verification
Ignition ON, observe the scan tool Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
Circuit/System Description
The electronic suspension control (ESC) module supplies a 5 volt reference signal to each suspension position sensor. The suspension position
sensors supply an voltage signal of 0.35-4.75 volts to the ESC module which represents the position between the body and the wheel. The sensors
are also grounded through the ESC module.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The DTC is set when the ESC module measures a position sensor signal voltage below 0.35 volt or above 4.75 volts for more than 1 second
while the vehicle is operated under normal driving conditions.
* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.
Action Taken When the DTC Sets
* The ESC will enter the speed dependent damping mode.
* Both left and right normal force outputs will be set to the default output states.
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information
Circuit/System Verification
Ignition ON, observe the scan tool Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 985
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 985
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0625
DTC C0615, C0620, C0625, or C0630
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 C0615 08
- Left Front Position Sensor Circuit - Signal Invalid
DTC C0615 55
- Left Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0620 08
- Right Front Position Sensor Circuit - Signal Invalid
DTC C0620 55
- Right Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0625 08
- Left Rear Position Sensor Circuit - Signal Invalid
DTC C0625 55
- Left Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0630 08
- Right Rear Position Sensor Circuit - Signal Invalid
DTC C0630 55
- Right Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
Diagnostic Fault Information
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0625
DTC C0615, C0620, C0625, or C0630
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 C0615 08
- Left Front Position Sensor Circuit - Signal Invalid
DTC C0615 55
- Left Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0620 08
- Right Front Position Sensor Circuit - Signal Invalid
DTC C0620 55
- Right Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0625 08
- Left Rear Position Sensor Circuit - Signal Invalid
DTC C0625 55
- Left Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0630 08
- Right Rear Position Sensor Circuit - Signal Invalid
DTC C0630 55
- Right Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
Diagnostic Fault Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 984
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 984
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 Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
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 Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 983
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 983
Circuit/System Description
The electronic suspension control (ESC) module supplies a 5 volt reference signal to each suspension position sensor. The suspension position
sensors supply an voltage signal of 0.35-4.75 volts to the ESC module which represents the position between the body and the wheel. The sensors
are also grounded through the ESC module.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The DTC is set when the ESC module measures a position sensor signal voltage below 0.35 volt or above 4.75 volts for more than 1 second
while the vehicle is operated under normal driving conditions.
* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.
Action Taken When the DTC Sets
* The ESC will enter the speed dependent damping mode.
* Both left and right normal force outputs will be set to the default output states.
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Circuit/System Description
The electronic suspension control (ESC) module supplies a 5 volt reference signal to each suspension position sensor. The suspension position
sensors supply an voltage signal of 0.35-4.75 volts to the ESC module which represents the position between the body and the wheel. The sensors
are also grounded through the ESC module.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts
* Ignition is ON
Conditions for Setting the DTC
* The DTC is set when the ESC module measures a position sensor signal voltage below 0.35 volt or above 4.75 volts for more than 1 second
while the vehicle is operated under normal driving conditions.
* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.
Action Taken When the DTC Sets
* The ESC will enter the speed dependent damping mode.
* Both left and right normal force outputs will be set to the default output states.
* The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Diagrams/Electrical Diagrams/Electronic Suspension Control)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Description and Operation/Electronic Suspension Control Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 982
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 982
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0620
DTC C0615, C0620, C0625, or C0630
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 C0615 08
- Left Front Position Sensor Circuit - Signal Invalid
DTC C0615 55
- Left Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0620 08
- Right Front Position Sensor Circuit - Signal Invalid
DTC C0620 55
- Right Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0625 08
- Left Rear Position Sensor Circuit - Signal Invalid
DTC C0625 55
- Left Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0630 08
- Right Rear Position Sensor Circuit - Signal Invalid
DTC C0630 55
- Right Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
Diagnostic Fault Information
3. Clear the DTCs.
4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.
This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.
5. Turn OFF the ignition for 60 seconds.
6. Turn ON the ignition.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in
order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic
procedure.
C0620
DTC C0615, C0620, C0625, or C0630
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 C0615 08
- Left Front Position Sensor Circuit - Signal Invalid
DTC C0615 55
- Left Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0620 08
- Right Front Position Sensor Circuit - Signal Invalid
DTC C0620 55
- Right Front Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0625 08
- Left Rear Position Sensor Circuit - Signal Invalid
DTC C0625 55
- Left Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
DTC C0630 08
- Right Rear Position Sensor Circuit - Signal Invalid
DTC C0630 55
- Right Rear Position Sensor Circuit - Expected Number Of Transitions Not Reached
Diagnostic Fault Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 981
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 981
* 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 Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
* 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 Position Sensor Data parameters. The readings should vary between 0.35-4.75 volts while the vehicle is jounced.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the applicable suspension position sensor.
2. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the ESC
module.
3. Ignition ON, test for 4.75-5.25 volts between the 5 volt reference circuit terminal A 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. If the circuit tests normal,
replace the ESC module.
瀚慖f greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC
module.
4. Verify the applicable scan tool position sensor parameter is less than 0.35 volts.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If all circuits test normal replace the ESC
module.
5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5 volt reference circuit terminal A. Verify the scan tool position
sensor parameter is greater than 4.75 volts.
瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the
ESC module.
6. If all circuits test normal, test or replace the applicable suspension position sensor.
Component Testing
1. Install a 3A fused jumper wire between the 5 volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal
C and ground.
2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low
reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.
瀚慖f not within the specified range or if it is erratic, replace the applicable suspension position sensor.
Repair Instructions
* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor
Replacement)
* Electronic Suspension Rear Position Sensor Replacement - Left Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Left Side)
* Electronic Suspension Rear Position Sensor Replacement - Right Side (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor
Replacement - Right Side)
* Suspension Position Calibration (With Z95) (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Service and Repair/Suspension Position Calibration (With Z95))Suspension Position Calibration (Without Z95) (See: Steering and
Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Service and Repair/Suspension Position Calibration (Without Z95))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
Subscribe to:
Posts (Atom)