P1ADC

DTC P1A4F, P1A50-P1A54, P1ADC, or P1ADD

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P1A4F
- Motor Control Module (MCM) 1 Not Programmed

DTC P1A50
- Motor Control Module (MCM) 1 Random Access Memory (RAM)

DTC P1A51
- Motor Control Module (MCM) 1 Read Only Memory (ROM)

DTC P1A52
- Motor Control Module (MCM) 2 Not Programmed

DTC P1A53
- Motor Control Module (MCM) 2 Random Access Memory (RAM)

DTC P1A54
- Motor Control Module (MCM) 2 Read Only Memory (ROM)

DTC P1ADC
- Motor Control Module (MCM) 1 Long Term Memory Performance

DTC P1ADD
- Motor Control Module (MCM) 2 Long Term Memory Performance

Circuit/System Description

This is an internal fault detection of the Power Inverter Module (PIM). This fault is handled inside the PIM and no external circuits are involved.

Conditions for Running the DTC

* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18 volts.

Conditions for Setting the DTC

The control module has detected an internal malfunction.

Action Taken When the DTC Sets

* DTCs P1A4F, P1A50, P1A51, P1A52, P1A53, P1A54, P1ADC and P1ADD are Type A DTCs.
* The PIM commands the battery energy control module (BECM) to open the high voltage relay contactors.

Conditions for Clearing the DTC

DTCs P1A4F, P1A50, P1A51, P1A52, P1A53, P1A54, P1ADC and P1ADD are Type A DTCs.

Circuit/System Verification

1. Clear the DTC information.
2. Turn the ignition OFF for 1 minute.
3. Turn the ignition ON.
4. Retest for DTCs P1A4F, P1A50, P1A51, P1A52, P1A53, P1A54, P1ADC and P1ADD.

Circuit/System Testing

Program the PIM with the latest software version and recheck for DTCs.

If the DTC resets, replace the Drive Motor Generator Power Inverter Module Assembly (PIM).

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Drive Motor Generator Power Inverter Module Assembly (PIM) replacement.