Operation CHARM: Car repair manuals for everyone.
Home >> Dodge or Ram Truck >> 2006 >> Dakota 2WD V8-4.7L VIN J >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Service and Repair

Engine Control Module: Service and Repair

MODULE-POWERTRAIN CONTROL

CAUTION:
- Certain ABS systems rely on having the Powertrain Control Module (PCM) broadcast the Vehicle Identification Number (VIN) over the bus network. To prevent problems of DTCs and other items related to the VIN broadcast, it is recommend that you disconnect the ABS CAB (controller) temporarily when replacing the PCM. Once the PCM is replaced, write the VIN to the PCM using the DRB scan tool. This is done from the engine main menu. Arrow over to the second page to "1. Miscellaneous". Select "Check VIN" from the choices. Make sure it has the correct VIN entered before continuing. When the VIN is complete, turn off the ignition key and reconnect the ABS module connector. This will prevent the setting of DTCs and other items associated with the lack of a VIN detected when you turn the key ON after replacing the PCM.
- Use the DRB scan tool to reprogram the new 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.

REMOVAL




The PCM (1) is attached to the right-inner corner of the engine compartment.

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

1. Disconnect and isolate the negative battery cable.
2. Carefully unplug the four 38-way connectors (2) from PCM.




3. Remove three PCM mounting bolts (2), and position ground strap (4). Remove PCM from vehicle.

INSTALLATION




1. Position PCM (3) to vehicle.
2. Install three PCM mounting bolts (2).
3. Tighten bolts to 3-5 N.m (30-40 in. lbs.).




4. Be sure ground strap (4) is secured both at bottom of PCM, and at inner-fender.
5. Check pin connectors in the PCM. Also check the four 38-way connectors (2) for corrosion or damage. Repair as necessary.
6. Install the four 38-way connectors (2) to PCM.
7. Connect negative battery cable.
8. Use the diagnostic scan tool to reprogram new PCM with vehicles original Identification Number (VIN) and original vehicle mileage. If this step is not done, a Diagnostic Trouble Code (DTC) may be set.
pro multis · About Operation CHARM