P15F4

DTC P15F4

Diagnostic Instructions

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

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

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

DTC Descriptor

DTC P15F4
- Drive Motor Torque Delivered Signal Message Counter Incorrect

Circuit/System Description

The generator control module, also called the starter generator control module, is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. These three control modules are non serviceable and are part of the generator control module.

This is an internal fault detection of the hybrid powertrain control module and no external circuits are involved.

Conditions for Running the DTC

* Ignition is ON.

* The system voltage is greater than 9.5 V.

* DTC U1817 is not set.

Conditions for Setting the DTC

The control module has detected an internal malfunction.

Action Taken When the DTC Sets

* DTC P15F4 is a Type A DTC.

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

Conditions for Clearing the DTC

DTC P15F4 is a Type A DTC.

Reference Information

Description and Operation

* Starter Generator Description and Operation Starter Generator Description and Operation

* Generator Control Module Description and Operation Generator Control Module Description and Operation

* Hybrid Modes of Operation Description Hybrid Modes of Operation Description

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Testing

Note: Diagnose and repair any communication DTCs prior to performing this testing.

1. Ignition ON.

2. Verify DTC P15F4 is not set.

• If the DTC is set

1. Program the K59 Starter Generator Control Module.

2. Verify the DTC does not set.

• If the DTC sets, replace the K59 Starter Generator Control Module.

• If the DTC does not set

3. All OK

• If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

Control Module References Control Module References for K59 Starter Generator Control Module replacement, programming and setup