Engine Control Module: Service and Repair

REMOVAL PROCEDURE

NOTE:
^ Check the resistance values of all PCM relays, solenoids, and other output controls before replacing or substituting the Powertrain Control Module (PCM). Check all the sensor wiring and the PCM output control circuits for a short to ground before replacing or substituting the PCM. Perform all circuit repairs or malfunctioning component part replacements before installing a replacement or substitute PCM. This will prevent damage to the replacement or substitute PCM.
^ 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:
^ Service of the Powertrain Control Module (PCM) consists of a complete replacement of the PCM. There are no serviceable parts, such as Programmable Read Only Memory (PROM) or Erasable Programmable Read Only Memory (EPROM) to replace inside the PCM. If the PCM is determined to be faulty, the PCM is to be replaced as a complete assembly.
^ When replacing the production PCM with a service PCM, it is important to transfer the broadcast code and production PCM number to the service PCM label. This will allow for positive identification of the PCM throughout the service life of the vehicle.





CAUTION: Refer to Battery Disconnect Caution in Service Precautions.

1. Disconnect the negative battery cable.
2. Remove the glove box (1).
3. Remove the console support bracket (2).
4. Remove the left side knee bolster trim panel (4).
5. Remove the left side knee bolster (3).




6. Remove the center trim panel (1).
7. Remove the radio (if equipped) (2).




8. Remove the shifter trim plate (1) from the front floor console (2) (A/T only).




9. Remove the manual shifter knob (3) and the shifter boot (2) from the shifter lever and the front floor console (1) (M/T only).




10. Remove the two bolts in the rear console box (1).
11. Remove the two screws on each side of the front floor console (2).
12. Slide the center console back towards the rear seats (4).
13. Remove the two upper screws of the front floor console.
14. Remove the front floor console (3).




15. Remove the three bolts (1) and the PCM (3), from the console carriage.
16. Remove the three PCM wiring harness electrical connectors (2) from the PCM (3).

INSTALLATION PROCEDURE





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.

1. Connect the three PCM wiring harness electrical connectors (2) to the PCM (3).
2. Install the PCM (3) into the console carriage.

NOTE: Refer to Fastener Notice in Service Precautions.

3. Secure the PCM (3) with three bolts (1).

Tighten
Tighten the PCM bracket bolts to 15 N.m (11 lb ft).




4. Install the front floor console (3).
5. Secure the upper portion of the front floor console with the two screws.
6. Install the center console (4) to the front floor console (3).
7. Secure the center console with the two bolts (1).
8. Secure the front floor console and center console with the two screws (2).




9. Install the shifter trim plate (1) to the front floor console (2) (A/T only).




10. Install the manual shifter boot (2) over the shifter lever and secure to the front floor console (1) (M/T only).
11. Install the shifter knob (3) onto the shifter lever (M/T only).




12. Install the radio (if equipped) (2).
13. Install the center trim panel (1).




14. Install the left side knee bolster (3).
15. Install the left side knee bolster trim panel (4).
16. Install the console support bracket (2).
17. Install the glove box (1).
18. Connect the negative battery cable.

Tighten
Tighten the negative battery cable terminal retainers to 15 N.m (11 lb ft).