P1AFC

DTC P1AFC, P1AFD, or P1B02

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 Instructionsprovides an overview of each diagnostic category.

DTC Descriptor
DTC P1AFC
- Drive Motor 1 Control Module Serial Peripheral Interface (SPI) Bus

DTC P1AFD
- Drive Motor 1 Control Module Serial Communications Interface (SCI) Bus

DTC P1B02
- Drive Motor 2 Control Module Serial Peripheral Interface (SPI) Bus

Circuit/System Description

This is an internal fault detection of the drive motor generator power inverter module. This fault is handled inside the hybrid powertrain control module and no external circuits are involved. The hybrid powertrain control module contains two motor control modules and the hybrid powertrain control module. These modules share dedicated internal drive motor generator power inverter module circuits. The modules listed below are part of the drive motor generator power inverter module and are not serviced separately.

* Hybrid powertrain control module
* Motor control module 1
* Motor control module 2

Conditions for Running the DTC

* The Ignition is ON.
* The system voltage is 8-18 V.

Conditions for Setting the DTC

P1AFC

Motor control module 1 detects a loss of SPI bus communication with the hybrid powertrain control module.

P1AFD

Motor control module 1 detects a loss of SCI bus communication with motor control module 2 for 2 seconds.

P1B02

Motor control module 2 detects a loss of SPI bus communication with the hybrid powertrain control module.

Action Taken When the DTC Sets

* DTCs P1AFC and P1B02 are Type A DTCs.
* DTC P1AFD is a Type B DTC.
* The hybrid powertrain control module commands the battery energy control module to open the high voltage contactor relays.

Conditions for Clearing the DTC

* DTCs P1AFC and P1B02 are Type A DTCs.
* DTC P1AFD is a Type B DTC.

Reference Information
DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions 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 Verification Tests after completing the diagnostic procedure.

Control Module References Programming and Relearning for Drive Motor Generator Power Inverter Module replacement, setup, and programming.