Engine Control Module: Service and Repair

Powertrain Control Module (PCM)









Removal

1. NOTICE: Make sure the ignition switch is in the OFF position prior to working on the electronic engine controls or the vehicle may be damaged.

Turn the ignition switch to the OFF position.

2. Retrieve the module configuration. Carry out the module configuration retrieval steps of the Programmable Module Installation (PMI) procedure. For additional information, refer to Information Bus. Programming and Relearning

3. Disconnect the RH battery ground cable.

4. Detach the wiring harness retainer.

5. Disconnect the PCM electrical connectors.

6. Remove the 2 nuts and the PCM bracket.
- Remove the PCM.


Installation

All vehicles

1. Position the PCM and bracket.
- Install the 2 nuts and tighten to 7 Nm (62 lb-in).

2. Connect the PCM electrical connectors.

3. Attach the wiring harness retainer.

4. Connect the RH battery ground cable.

5. NOTE: If the Programmable Module Installation (PMI) procedure was not successful in downloading the data from the vehicles original PCM, then the oil life data of the vehicle is lost. If this occurs, and the oil life cannot be determined through service history or customer interview, it is recommended the vehicle engine oil and filter be changed and the oil change minder reset.
Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation (PMI) procedure. For additional information, refer to Information Bus. Programming and Relearning

6. NOTE: If the Body Control Module (BCM) or the PCM (or both) is being replaced, the parameters must be reset in both modules or the vehicle will experience a Passive Anti-Theft System (PATS) no start. This will occur even if the vehicle is not equipped with PATS (Passive Anti-Theft System).
Carry out the PATS (Passive Anti-Theft System) Parameter Reset. For additional information, refer to Anti-Theft and Alarm Systems.

Vehicles with Circuit Deactivation Ignition Module (CDIM)

7. Carry out the extended idle shut down initialization procedure. For additional information, refer to Extended Idle Shutdown Initialization Electronic Engine Controls procedure.