For 1990-2009 cars only
Diagnostic Instructions
| • | 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. |
DTC Descriptor
DTC P1A4F: Drive Motor 1 Control Module Not ProgrammedDTC P1A50: Drive Motor 1 Control Module Random Access Memory (RAM)
DTC P1A51: Drive Motor 1 Control Module Read Only Memory (ROM)
DTC P1A52: Drive Motor 2 Control Module Not Programmed
DTC P1A53: Drive Motor 2 Control Module Random Access Memory (RAM)
DTC P1A54: Drive Motor 2 Control Module Read Only Memory (ROM)
DTC P1ADC: Drive Motor 1 Control Module Long Term Memory Performance
DTC P1ADD: Drive Motor 2 Control Module 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 contactor relays. |
Conditions for Clearing the DTC
DTCs P1A4F, P1A50, P1A51, P1A52, P1A53, P1A54, P1ADC and P1ADD are Type A DTCs.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Circuit/System Verification
- Clear the DTC information.
- Turn the ignition OFF for 1 minute.
- Turn the ignition ON.
- 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 after programming or if the PIM already contains the latest software version, replace the PIM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for PIM replacement, setup, and programming.
