Engine Control Module: Service and Repair

REMOVAL




Use the diagnostic scan tool to reprogram the new Powertrain Control Module (PCM) with the original Vehicle Identification Number (VIN) and the vehicles original mileage. If this step is not done, a Diagnostic Trouble Code (DTC) may be set.

The PCM (2) is attached to the right-front inner fender (1) located in the engine compartment.

To avoid possible voltage spike damage to the PCM, ignition key must be off, and negative battery cable must be disconnected before unplugging PCM connectors.

1. Disconnect and isolate the negative battery cable.
2. Remove both wiper arms. Refer to Wipers/Washers section.
3. Remove wiper cowl (two screws, four pins).
4. Remove wiper cowl support (three bolts).
5. Remove air intake tube (four nuts).
6. Carefully unplug the four 38-way connectors (3) from PCM.
7. Remove three PCM mounting bolts (4), and remove PCM from vehicle.

INSTALLATION




1. Position PCM (2) to vehicle.
2. Install three PCM mounting bolts (4).
3. Tighten bolts to 3-5 Nm (30-40 in. lbs.).
4. Check pin connectors in the PCM. Also check the four 38-way connectors (3) for corrosion or damage. Repair as necessary.
5. Install the four 38-way connectors (3) to PCM.
6. Install air intake tube (four nuts).
7. Install wiper cowl support (three bolts).
8. Install wiper cowl (two screws, four pins).
9. Install both wiper arms. Refer to Wipers/Washers section.
10. Connect negative battery cable.
11. Use the diagnostic scan tool to reprogram new PCM with vehicles original Identification Number (VIN) and original vehicle mileage. If this step is not done, a Diagnostic Trouble Code (DTC) may be set.