2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1497
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
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)
Circuit/System Verification
1. Clear the DTC information.
2. Turn the ignition OFF for 2 minutes.
3. Turn the ignition ON.
4. Operate the vehicle within the conditions for running and setting.
5. Retest for the DTC.
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Perform the High Voltage Disabling () procedure for servicing at the drive motor generator control module cable connections.
2. Remove the 3-phase cable assembly from the PIM distribution box. Refer to Generator Control Module 3-Phase Cable Assembly
Replacement ().
3. Test the resistance to ground for each phase of the applicable drive motor generator by measuring between the following points with a DMM.
* Phase U terminal and chassis ground
* Phase V terminal and chassis ground
* Phase W terminal and chassis ground
瀚慖f less than infinite is measured, continue with Circuit/System Testing.
瀚慖f infinite resistance is measured, replace the drive motor generator assembly that corresponds to the set DTC and retest for DTCs. If
DTC P0C01 or P0C04 still resets, replace the PIM.
4. Remove the 3-phase cable assembly from the transmission. Refer to Generator Control Module 3-Phase Cable Assembly Replacement ().
Ensure the terminals are not contacting chassis ground.
5. Retest the resistance to ground for each phase of the 3-phase cable. Measure between the following points with a DMM.
* Phase U terminal and the shield ground
* Phase V terminal and the shield ground
* Phase W terminal and the shield ground
瀚慖f infinite resistance is measured, replace the applicable drive motor generator.
瀚慖f less than infinite is measured, replace the generator control module 3-phase cable assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
* Generator Control Module 3-Phase Cable Assembly Replacement ()
* Drive Motor with Generator Assembly Removal - 1st Position (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/8. Drive Motor with Generator Assembly Removal -
