Engine Control Module: Service and Repair

Fig 29 Power Distribution Center Retaining Screws:

REMOVAL
1. Disconnect both cables from battery, negative cable first.

NOTE: On some models you will need to perform the LED reset procedure (LED's Flashing) after disconnecting the battery. Testing and Inspection

2. Remove 2 screws holding Power Distribution Center (PDC) to bracket (Fig. 29).

Fig 30 Battery Heat Shield:

3. Remove heat shield from battery (Fig 30).

Fig 31 Battery Clamp:

4. Remove nut and clamp holding battery to battery tray (Fig. 31).
5. Remove battery from vehicle.

Fig 32 PDC Rear Bracket:

6. Rotate PDC toward center of vehicle to remove from rear bracket (Fig. 32).
7. Pull PDC rearward to remove from front bracket. Lay PDC aside to allow access to Powertrain Control Module (PCM).

Fig 33 PCM 40 Way Connectors:

8. Squeeze tabs on 40-way connector. Pull connector rearward to remove from PCM (Fig. 33). Remove both way connectors.

Fig 34 PCM Removal/Installation:

9. Remove 3 screws holding PCM to fender (Fig. 34).
10. Remove PCM from vehicle.

INSTALLATION
1. Connect 2 40-Way electrical connectors to PCM (Fig. 33).
2. Install PCM. Tighten mounting screws.
3. Install PDC bracket.
4. Install battery.

NOTE: Use a DRB or equivalent scan tool to reprogram the new PCM with the vehicles original identification number (VIN) and mileage. If this is not done a diagnostic trouble code (DTC) may be set.

IMPORTANT NOTE: If the Powertrain Control Module has been changed and the correct VIN and mileage have not been programmed, a DTC will be set in the ABS and Air bag modules. In addition, if the vehicle is equipped with a Smart Key Immobilizer Module (SKIM), Secret Key data must be updated to enable starting.

For ABS and Air Bag systems:

ACTION:
1. Enter correct VIN and Mileage in PCM.
2. Erase codes in ABS and Air Bag modules.

For SKIM theft alarm:

ACTION:
1. Connect the DRB to the data link connector.
2. Go to Engine, Misc. and place the SKIM in secured access mode, by using the appropriate PIN code for this vehicle.
3. Select Update the Secret Key data, data will be transferred from the SKIM to the PCM.