Powertrain Control Module (PCM) Replacement

Service of the PCM should normally consist of either replacement of the PCM or EEPROM programming. If the diagnostic procedures call for PCM Replacement, check the PCM first to see if it is the correct pan. If the PCM is faulty, remove it and install the new service PCM.

The new service PCM will not be programmed. You must program the new PCM. DTC P0602 indicates the EEPROM is not programmed or has malfunctioned.

NOTE:
^ Do not touch the connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD) damage to the PCM.
^ Turn the ignition OFF when installing or removing the PCM connectors and disconnecting or reconnecting the power to the PCM (battery cable, PCM pigtail, PCM fuse, jumper cables, etc.) in order to prevent internal PCM damage.

IMPORTANT: When replacing the production PCM with a service PCM (controller), it is important to transfer the broadcast code and production PCM number to the service PCM label. Do not record on PCM cover. This will allow positive identification of PCM pans throughout the service life of the vehicle.

Removal Procedure

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.




1. Disconnect the negative battery cable.
2. Remove the PCM from the mounting hardware.
3. Disconnect the harness connectors from the PCM.
4. Remove the PCM from the engine compartment.

Installation Procedure

NOTE: Refer to Fastener Notice in Service Precautions.




1. Connect the harness connectors to the PCM.

Tighten
Tighten the connectors to 8 N.m (71 lb in).

2. Position and install the PCM into the vehicle.
3. Connect the negative battery cable.
4. The Replacement PCM will NOT allow Secondary Air Injection (AIR) pump operation until a total of 16 km (10 mi) have been accumulated.
5. The new PCM must be programmed. Programming and Relearning