Service Information

Volt

DTC P061A or P061B

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P061A: Internal Control Module Torque System Circuitry Performance

DTC P061B: Internal Control Module Torque Calculation Performance

The hybrid powertrain control module is responsible for vehicle torque management. To accomplish this, the hybrid powertrain control module constantly monitors all aspects of requested and actual delivered torque from involved controllers. If a torque management fault is detected propulsion power will be reduced or shut down. The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module and is not serviced separately. This fault is handled inside the hybrid powertrain control module and no external circuits are involved.

Conditions for Running the DTC

•	The vehicle is ON.

•	The system voltage is at least 9.5 V.

Conditions for Setting the DTC

The control module has detected an internal malfunction.

Action Taken When the DTC Sets

•	DTCs P061A or P061B are Type A DTCs.

•	The hybrid powertrain control module requests the hybrid powertrain control module 2 to open the high-voltage contactor relays.

Conditions for Clearing the DTC

DTCs P061A and P061B are Type A DTCs.

Reference Information

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

Verify that DTC P0562 is not set.

⇒	If DTC is set, refer to DTC B1325, B1330, B1517, C0800, C0899, C0900, C12E1, C12E2, P0562, P0563, P1A0C, P1A0D, or P1EFC .

If the DTC is set, replace the T6 power inverter module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Drive Motor Generator Power Inverter Module, also called the power inverter module, replacement, programming and set-up.