2010 Cadillac Truck Escalade RWD V8-6.2L Page 1522
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48458 Pre-Charge Test Tool
* EL-48569 Terminal Covers
Circuit/System Verification
Important: DTC P1AE7 must test and pass before performing this diagnostic procedure.
1. Inspect for DTC P1AE7.
瀚慖f the DTC is set, the loss of isolation has occurred within the drive motor generator battery. Diagnose this concern first. Refer to DTC
P1AE6 or P1AE7 (See: P Code Charts/P1AE6).
2. Inspect for DTCs P0A78, P0A79, P0BFD, P0BFE, P0C01, or P0C04.
瀚慖f any of the DTCs are set, the loss of isolation has occurred within the 3-phase components. Diagnose this concern first. Refer to
Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List -
Vehicle).
3. Clear the DTC information.
4. Turn the ignition OFF for 1 minute.
5. Turn the ignition ON.
6. Operate the vehicle within the Conditions for Running the DTC.
7. Retest for DTCs P1AF0 and P1AF2.
Circuit/System Testing
Important: DTC P1AE7 must test and pass before performing this diagnostic procedure.
1. Inspect for DTC P1AE7.
瀚慖f the DTC is set, the loss of isolation has occurred within the drive motor generator battery. Refer to DTC P1AE6 or P1AE7 (See: P
Code Charts/P1AE6).
2. Inspect for DTCs P0A78, P0A79, P0BFD, P0BFE, P0C01, or P0C04.
瀚慖f any of the DTCs are set, the loss of isolation has occurred within the 3-phase components. Diagnose this concern first. Refer to
Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List -
Vehicle).
3. Place the vehicle in the following condition:
* Ignition OFF for at least 2 minutes
* Hood Closed
* Transmission in Park
Important: The following sequence must be accomplished within the time stated in Conditions for Setting the DTC.
4. Turn the ignition ON with the engine OFF.
Observe and record the scan tool HPCM 300V Circuit Voltage parameter. High voltage should be enabled and Hybrid Battery voltage
