• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The drive motor generator battery control module (GBCM) performs tests on its own internal memory to detect failures. No external circuits are involved. Failure of these diagnostics can cause erratic hybrid drive motor battery and HV contactor relay operation.
The ignition is ON.
The BECM has detected an internal malfunction.
• | The contactors will either open or will not change state, depending on conditions. |
• | The malfunction indicator lamp (MIL) turns ON. |
• | DTCs P0A1F, P1A01, P1A05, and P1A06 are type A DTCs. |
• | DTC P1A01 will pass if the EEPROM checksum matches when the ignition is turned OFF. |
Hybrid Energy Storage Schematics
Drive Motor Battery System Description
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
EL-48900 HEV Safety Kit
Replace the drive motor generator battery control module.
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References - for drive motor generator battery control module replacement, setup and programming.