Powertrain Control Module: Removal

WARNING: This page is about a different car, the 2004 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

USE THE DRBIII(R) SCAN TOOL TO REPROGRAM THE NEW POWERTRAIN CONTROL MODULE (PCM) WITH THE VEHICLES ORIGINAL IDENTIFICATION NUMBER (VIN) AND THE VEHICLES ORIGINAL MILEAGE. IF THIS STEP IS NOT DONE, A DIAGNOSTIC TROUBLE CODE (DTC) MAY BE SET.

The PCM is located on the cowl panel in right/rear side of engine compartment (Fig 1 ).

Fig 1: Powertrain Control Module (PCM) Location

Courtesy of DAIMLERCHRYSLER CORP.

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

Disconnect negative battery cable at battery.
If equipped, remove Transmission Control Module (TCM).
Remove coolant reserve/overflow tank.
Remove cover over electrical connectors. Cover snaps onto PCM.
Carefully unplug three 32-way connectors at PCM.
Remove three PCM bracket-to-body mounting nuts (Fig 2 ).

Fig 2: Powertrain Control Module (PCM) 32-Way Connectors
Courtesy of DAIMLERCHRYSLER CORP.
Remove PCM/PCM bracket assembly from vehicle.
Remove 3 PCM-to-PCM bracket bolts (screws) (Fig 3 ).

Fig 3: Powertrain Control Module (PCM) Mounting Bracket
Courtesy of DAIMLERCHRYSLER CORP.