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.
NOTE:
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.
NOTE:
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.
- Disconnect the negative battery cable.
- Disable the SIR system. Refer to SIR Disabling and Enabling Zone 5 in SIR.
- Release the two plastic retainers (2) with the blade of a screwdriver and remove the PCM cover (1).
- 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.
- Remove the two PCM retaining bolts (3).
- Slide the PCM (4) forward and out from the PCM bracket.
- Remove the four PCM bracket bolts (1).
- Remove the PCM bracket (2) from underneath the instrument panel.
CAUTION:
Refer to Battery Disconnect Caution in Cautions and Notices.