2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1536
锟斤拷If the DTC has passed, clear DTC Information. No further diagnosis is necessary.
Circuit/System Testing
1. Inspect for DTCs P0A40, P0A45, P0A46, P0A78, P0A79, P0A3F, P0C05, P0C08, P0C0B, P0C0E, P0C4E, P0C4F, P0C52, P0C53, P0C57,
P0C58, P0C61, P0C62, P0C5C, P0C5D, P1B03, P1B04 or P1B0D.
锟斤拷If any of the above DTCs are set, diagnose and repair them prior to performing this diagnostic.
2. Ignition ON, engine OFF. Observe the HPCM 300V Circuit parameter. The hybrid battery voltage should be greater than 192V.
锟斤拷If the hybrid battery voltage is less than 192V perform the Jump Assist procedure and attempt to successfully charge the hybrid battery.
Re-test for this DTC after the Jump Assist procedure is complete. Refer to Jump Assist ().
3. Turn the ignition OFF and wait 2 minutes.
4. Turn the ignition ON without cranking the engine. Monitor DTC Status. DTC P0C17 and P0C18 should have passed last test.
锟斤拷If DTC P0C4E or P0C4F sets, proceed to that diagnostic procedure.
锟斤拷If DTC P0C17 and P0C18 have passed, clear DTC Information. No further diagnosis is necessary.
锟斤拷If DTC P0C17 or P0C18 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 drive motor generator assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* 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 -
1st Position)
* Drive Motor with Generator Assembly Removal - 2nd Position (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/13. Drive Motor with Generator Assembly Removal
- 2nd Position)
P0C19
DTC P0C19
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 P0C19
- Drive Motor 1 Torque Delivered Performance
Circuit/System Description
Each drive motor generator is controlled by a motor control module (MCM). The MCM constantly monitors the requested torque and the delivered
torque of its respective drive motor generator.
Conditions for Running the DTC
* Ignition voltage is 8-18 volts.
* Drive motor generator is commanded to develop torque.
Conditions for Setting the DTC
The MCM has detected that drive motor generator torque is not being delivered as expected.
Action Taken When the DTC Sets
* DTC P0C19 is a Type A DTC.
