P1AFB

DTC P1AFB or P1B01

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 P1AFB
- Drive Motor 1 Control Module Programmable Logic Device Security Code

DTC P1B01
- Drive Motor 2 Control Module Programmable Logic Device Security Code

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. The hybrid powertrain control module and each motor control module utilize a programmable logic device to perform certain input and output functions. Motor control module 1 programs the programmable logic device with software at every ignition ON event. Motor control modules 1 and 2 verify that the programmable logic device is programmed successfully.

Conditions for Running the DTC

* Ignition ON.
* Ignition voltage is at least 8 V and no more than 18 V.

Conditions for Setting the DTC

The control module has detected an internal programmable logic device malfunction.

Action Taken When the DTC Sets

* DTCs P1AFB and P1B01 are Type A DTCs.
* The hybrid powertrain control module commands the battery energy control module to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTCs P1AFB and P1B01 are Type A DTCs.

Diagnostic Aids

An intermittent loss of battery voltage to the drive motor generator power inverter module assembly may set this DTC.

Reference Information
Connector End View Reference

Component Connector End Views Connector Views
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 hybrid powertrain control 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 Drive Motor Generator Power Inverter Module replacement, setup, and programming.