Engine Control Module: Service and Repair

The PCM engine control strategy prevents reduced idle speeds until after the engine operates for 320 km (200 miles). If the PCM is replaced after 320 km (200 miles) of usage, update the mileage and vehicle identification number (VIN) in the new PCM. Use the DRB scan tool to change the millage and VIN in the PCM. If this step is not done a Diagnostic Trouble Code (DTC) may be set. Refer to the appropriate Powertrain Diagnostic and the DRB scan tool.

The PCM attaches to a bracket between the air cleaner housing and Power Distribution Center(PDC).

REMOVAL

Fig.28 Auxiliary Jumper Terminal:

1. Disconnect negative cable from auxiliary jumper terminal.
2. Disconnect both 40-way connectors from PCM.

Fig.29 PCM Bracket Screws:

3. Remove screws attaching PCM to bracket.
4. Lift PCM up to remove it from vehicle.

INSTALLATION
1. Install PCM. Tighten mounting screws.
2. Attach both 40-way connectors to PCM.
3. Connect negative cable to auxiliary jumper terminal.