Notice: 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 PCM 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.

The ignition should be OFF for at least 10 seconds before disconnecting power to the PCM so the IAC valve has time to move to the engine OFF position.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

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.

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.