P06AF

DTC P06AF

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 P06AF

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Torque Management System - Forced Engine Shutdown

Circuit/System Description

This diagnostic applies to communication integrity conditions between the engine control module (ECM) and the hybrid powertrain control module. The hybrid powertrain control module monitors a state of health message that the ECM transmits to verify the ECM is functioning properly. The hybrid powertrain control module is part the drive motor power inverter module and is not serviced separately.

Conditions for Running the DTC

The system voltage is 8-18 V.

Conditions for Setting the DTC

The hybrid powertrain control module does not detect a valid state of health message from the ECM.

Action Taken When the DTC Sets

* DTC P06AF 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 P06AF is a Type A DTC.

Reference Information

DTC Type Reference

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

Circuit/System Verification

Verify that ECM DTC P0606, P0A1D is not set.

If the DTC is set, Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

Circuit/System Testing

1. Ignition OFF, remove the F103 drive motor generator control module sight shield. Refer to Drive Motor Generator Control Module Sight Shield Replacement Drive Motor Generator Control Module Sight Shield Replacement.

2. Disconnect the T6 drive motor generator power inverter module X1 connector and the ECM X3 connector.

3. Test for less than 1 ohms between the serial data circuits listed below:

* T6 drive motor generator power inverter module X1 connector terminal 10 and K20 ECM X3 connector terminal 33

* T6 drive motor generator power inverter module X1 connector terminal 11 and K20 ECM X3 connector terminal 53

• If greater than the specified range, test the serial data circuit for an open/high resistance condition. If the circuit tests normal, replace the K20 ECM.

4. 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 Verification Tests after completing the diagnostic procedure.

Control Module References Control Module References for ECM or Drive Motor Generator Power Inverter Module replacement, setup, and programming.