2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1534
Conditions for Clearing the DTC
P0C17 and P0C18 are Type B DTCs.
Reference Information
Schematic Reference
Hybrid Controls Schematics ()
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Ignition OFF, wait 2 minutes.
2. Ignition ON, wait 2 minutes and then turn ignition OFF.
3. Ignition ON, monitor DTC Status. DTC P0C17 and P0C18 should have passed last test.
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)
P0C18
DTC P0C17 or P0C18
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 Descriptors
DTC P0C17
- Drive Motor 1 Position Not Learned
