Powertrain Control Module (PCM) Replacement

NOTE: In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector.

Service of the PCM should normally consist of either replacement of the POM or EEPROM re-programming.

If the diagnostic procedures call for the PCM to be replaced, the PCM should be checked first to see if it is the correct part. DTC P0601 indicates the EEPROM programming has malfunctioned. When DTC P0601 is obtained, re-program the EEPROM.

NOTE: In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector. The ignition should be OFF for at least 10 seconds before disconnecting power to the PCM so the AC valve has time to move to the engine OFF position.

Removal Procedure

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.




1. Disconnect the negative battery cable.
2. Move the PCM retention bar and retainer away from the PCM.




3. Remove the PCM from the PCM mounting bracket.




4. Remove the PCM electrical connectors.

Installation Procedure




1. Remove the Replacement PCM from the packaging.
2. Check the service number in order to make sure it is the same number as the defective PCM.
3. Install the PCM electrical connectors.




4. Slide the PCM retainer into the PCM bracket slots.




5. Pull the PCM retention bar into position.