2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2583
DTCs P0642, P0643, P0652 and P0653 are Type A DTCs.
Reference Information
DTC Type Reference
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. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTCs P0642, P0643, P0652 and P0653.
Circuit/System Testing
1. Clear the DTC and operate the vehicle under the condition for running and setting the DTC.
2. Shut the ignition OFF for 30 seconds, and verify that the DTC does not reset.
瀚慖f the DTC resets, replace the Drive Motor Generator Power Inverter Module Assembly (PIM).
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.
P0653
DTC P0642, P0643, P0652, or P0653
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 P0642
- 5 Volt Reference 1 Circuit Low Voltage
DTC P0643
- 5 Volt Reference 1 Circuit High Voltage
DTC P0652
- 5 Volt Reference 2 Circuit Low Voltage
DTC P0653
- 5 Volt Reference 2 Circuit High Voltage
Circuit/System Description
The drive motor generator power inverter module (PIM) contains two motor control modules (MCM) and a hybrid powertrain control module
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Monday, February 24, 2020
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2583
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