Powertrain Control Module (PCM) Replacement

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.
- In order to prevent possible Electrostatic Discharge damage to the PCM, Do Not touch the connector pins or the soldered components on the circuit board.
- 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: The replacement PCM must be programmed.




1. Disconnect the negative battery cable.

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.

2. Disable the SIR system. Refer to SIR Disabling and Enabling Zone 5 in Restraint Systems.
3. Release the two plastic retainers (2) with the blade of a screwdriver and remove the PCM cover (1).




4. Disconnect the PCM electrical connectors as follows:
- Disconnect the four PCM electrical connectors on vehicles equipped with an automatic transmission.
- Disconnect the three PCM electrical connectors on vehicles equipped with a manual transmission.
5. Remove the two PCM retaining bolts (3).
6. Slide the PCM (4) forward and out from the PCM bracket.
7. Remove the four PCM bracket bolts (1).
8. Remove the PCM bracket (2) from underneath the instrument panel.

INSTALLATION PROCEDURE




1. Install the PCM bracket (2) underneath the instrument panel.
2. Secure the PCM bracket (2) with the 4 bolts (1).

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten
Tighten the PCM bracket bolts to 10 N.m (89 lb in).

3. Install the PCM (4) into the PCM bracket (2).
4. Secure the PCM to the PCM bracket with the 2 bolts.

Tighten
Tighten the PCM retaining bolts to 10 N.m (89 lb in).

5. Connect the PCM electrical connectors as follows:
- Connect the four PCM electrical connectors on vehicles equipped with an automatic transmission.
- Connect the three PCM electrical connectors on vehicles equipped with a manual transmission.

Powertrain Control Module (PCM) Description:

6. Install the PCM cover (1) and secure with the two plastic retainers.
7. Enable the SIR system. Refer to SIR Disabling and Enabling Zone 5.
8. Connect the negative battery cable.
9. Program the PCM before starting the engine and operating the vehicle. Programming and Relearning