Service Information

Volt

DTC P15F1

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 P15F1: Axle Torque Request Circuit

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. The hybrid powertrain control module is internal to the drive motor generator power inverter module, and is not serviced separately. The hybrid powertrain control module monitors its ability to read and write to the memory. The hybrid powertrain control module processor monitors the data to verify that the indicated axle torque requested calculation is correct.

Conditions for Running the DTC

•	The ignition is ON.

•	The system voltage is 8-18 V.

Conditions for Setting the DTC

The control module has detected an internal malfunction.

Action Taken When the DTC Sets

•	DTC P15F1 is a Type A DTC.

•	The hybrid powertrain control module commands the battery energy control module to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTC P15F1 is a Type A DTC.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

If the DTC is set, program the T6 drive motor generator power inverter module. If the DTC resets, replace the T6 drive motor generator 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 replacement, set-up and programming.