P1A05

DTC P0A1F, P1A01, P1A05, or P1A06

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 Descriptors
DTC P0A1F
- Battery Energy Control Module Internal Performance

DTC P1A01
- Battery Energy Control Module Long Term Memory Performance

DTC P1A05
- Battery Energy Control Module Random Access Memory (RAM)

DTC P1A06
- Battery Energy Control Module Read Only Memory (ROM)

Circuit/System Description

The drive motor generator battery control module will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the drive motor generator battery control module to the drive motor generator control module through serial data. The drive motor generator control module is the host controller for diagnostic trouble code (DTC) information.

This diagnostic applies to internal microprocessor integrity conditions within the drive motor generator battery control module. This is an internal electronic fault detection diagnostic of the drive motor generator battery control module. This fault is internal to the drive motor generator battery control module and no external circuits are involved.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The drive motor generator battery control module has detected an internal malfunction.

Action Taken When the DTC Sets

* DTCs P0A1F, P1A01, P1A05, and P1A06 are type A DTCs.
* The contactors will open.
* The malfunction indicator lamp (MIL) turns ON.

Conditions for Clearing the DTC

DTCs P0A1F, P1A01, P1A05, and P1A06 are type A DTCs.

Reference Information
Schematic Reference

Hybrid Energy Storage Schematics [1][2]Electrical Diagrams
Connector End View Reference

Component Connector End Views Connector Views
Description and Operation

Drive Motor Battery System Description Drive Motor Battery System Description
Electrical Information Reference

* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference

Control Module References Control Module References for scan tool information
Special Tools

EL-48900 HEV Safety Kit

Circuit/System Verification

Verify that DTC P0A1F, P1A01, P1A05, or P1A06 is not set.

If any of the DTCs are set, replace the drive motor generator battery control module.

Repair Instructions

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

Control Module References Control Module References for drive motor generator battery control module replacement, setup and programming