2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1498

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1498

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)

P0C1A

DTC P0C1A

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 P0C1A

- Drive Motor 2 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 P0C1A is a Type A DTC.

* The hybrid powertrain control module (HPCM) commands the battery energy control module (BECM) to open the high voltage contactor

relays.

Conditions for Clearing the DTC

DTC P0C1A is a Type A DTC.

Diagnostic Aids

Because the drive axle and drive motor 2 are joined mechanically through a planetary gear set, a drive axle condition that requires drive motor

generator 2 to utilize excessive current while trying to rotate the drive axle may cause this DTC to set.

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. Inspect for DTCs P0A45, P0A46, P0A79, P0BFE, P0C04, P0C08, P0C0E, P0C18, P0C4F, P0C57, P0C58, P0C61, P0C62, P1AFE, P1B04,

or P1B10.

瀚慖f the specified DTCs are set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Clear the DTC information.

3. Turn the ignition OFF for 1 minute.

4. Attempt to start the engine.