Powertrain Control Module (PCM) Replacement

Service Of the powertrain control module (PCM) should normally consist of either replacement of the PCM or electronically eraseable programmable read only memory (EEPROM) programming. If the diagnostic procedures call for PCM replacement, check the PCM first to see if the PCM is the correct part. If the PCM is faulty, remove the PCM 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: In order to prevent possible electrostatic discharge damage to the PCM, do not touch the connector pins or soldered components on the circuit board.

There are no user serviceable parts in this PCM. The PCM should never be opened for any reason.

NOTE: 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, transfer the broadcast code and production PCM number to the service PCM label. Do not record the information on the PCM cover. This will allow positive identification of the PCM parts 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 left strut brace.
3. Loosen the band clamp (2) at the throttle body (1), and disconnect the air duct (3) from the throttle body.
4. Disconnect the electrical connectors for the intake air temperature (IAT) sensor and the mass air flow (MAF) sensor.




5. Loosen the retaining screw (2) for the air cleaner cover.
6. Remove the air cleaner cover (1) and lift the PCM (3) from the housing assembly.




7. Disconnect the harness connectors (2) from the PCM (1).
8. Remove the PCM from the engine compartment.

Installation Procedure

NOTE: Refer to Fastener Notice in Service Precautions.




1. Install the connectors (2) to the PCM (1)

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




2. Install the PCM (3) into the air cleaner housing assembly.
3. Install the air cleaner housing cover (1).
4. Tighten the retaining screw (2) for the air cleaner cover.




5. Reconnect the air duct (3) to the throttle body (1), and tighten the band clamp (2) at the throttle body.
6. Reconnect the electrical connectors for the IAT sensor and the MAF sensor.
7. Install the strut brace.
8. Connect the negative battery cable.
9. If a new PCM is being installed, program the EEPROM. Programming and Relearning