2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1715

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1715

1. Observe the DTC information with a scan tool.

瀚慖f DTC P0602 is set, attempt to program the K20 ECM before replacing the K20 ECM. Refer to Control Module References (See:

Testing and Inspection/Programming and Relearning) for K20 ECM replacement, setup, and programming.

瀚慖f DTC P0602 resets, replace the K20 ECM.

2. Observe the DTC information with a scan tool. DTC P0601, P0603, P0604, P0605, P0606, P0607, P060D, P062F, or P2610 should not set.

瀚慖f a DTC failed this ignition, replace the K20 ECM.

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 ECM replacement, programming and setup

P061A

DTC P061A or P061B

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 P061A

- Control Module Torque Performance

DTC P061B

- Control Module Torque Calculation Performance

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM monitors

its ability to read and write to the memory. The HPCM processor monitors the data to verify that the indicated torque calculation is correct. The

HPCM is located within the drive motor generator power inverter module (PIM) and is not serviceable separately.

Conditions for Running the DTC

P061A

* Ignition voltage is 8-18V.

* Regenerative braking torque is greater than 0 Nm.

P061B

* Ignition voltage is 8-18V.

* Any output or brake torque is present.

Conditions for Setting the DTC

P061A

The control module has detected the internal software calculation for regenerative braking torque has an error of greater than 100 Nm.

P061B

The control module has detected a torque calculation error.

Action Taken When the DTC Sets

* DTCs P061A and P061B are Type A DTCs.

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