Mechanics

PCM

2001 Jeep Grand Cherokee

Computer problem
2001 Jeep Grand Cherokee V8 Four Wheel Drive Automatic 95555 miles

Where is the pcm and how do you R& R it
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Kenmann
October 2, 2010.



Powertrain Control Module is-On right side of firewall.

REMOVAL

USE THE DRB 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.

Fig.13 Powertrain Control Module(PCM) Location


http://www.2carpros.com/forum/automotive_pictures/12900_PCM_5.jpg



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

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

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.

Fig.14 Powertrain Control Module (PCM) 32-Way Connectors


http://www.2carpros.com/forum/automotive_pictures/12900_pcm1_5.jpg



Remove three PCM bracket-to-body mounting nuts.
Remove PCM/PCM bracket assembly from vehicle.

Fig.15 Powertrain Control Module (PCM) Mounting Bracket


http://www.2carpros.com/forum/automotive_pictures/12900_pcm2_1.jpg



Remove 3 PCM-to-PCM bracket bolts (screws).

Rasmataz
Oct 2, 2010.