2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1495
2. Ignition OFF for 1 minute.
3. Ignition ON.
4. Retest for DTCs P0C0B or P0C0E.
Circuit/System Testing
Ignition ON, retest for DTC P0C0B or P0C0E.
If the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the PIM
already contains the latest software version, replace the 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.
P0C0E
DTC P0C0B or P0C0E
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 P0C0B
- Drive Motor 1 Inverter Positive Voltage Circuit
DTC P0C0E
- Drive Motor 2 Inverter Positive Voltage Circuit
Circuit/System Description
This is an internal fault detection of the drive motor generator power inverter module (PIM) assembly. This fault is handled inside the PIM and no
external circuits are involved.
Conditions for Running the DTC
The inverter self test is complete.
Conditions for Setting the DTC
The control module does not detect voltage at the isolated gate bi-polar transistor (IGBT) bias supply.
Action Taken When the DTC Sets
* DTCs P0C0B and P0C0E are Type A DTCs.
* The PIM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTCs P0C0B and P0C0E 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)
Circuit/System Verification
1. Clear the DTC information.
