Engine Control Module: Service and Repair

Powertrain Control Module Replacement

Removal Procedure

Important: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100%. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change.

1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.






2. Record the preset radio stations.
3. Turn the ignition OFF.
4. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Starting and Charging.
5. Disconnect the PCM harness connectors.






6. Release the retaining tab located in the battery box lower half using a small screwdriver or other suitable tool.
7. Remove the PCM by lifting upward after releasing the tab.

Installation Procedure






1. Slide the PCM into the PCM bracket on the front of the battery box.
2. Push down on the PCM until the retaining tab snaps into place.






3. Connect the PCM harness connectors.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Starting and Charging. Tighten the battery terminal bolts to 17 Nm (13 lb ft).

Important: Following the PCM reprogramming , the PCM will have to learn the crankshaft position variation for misfire diagnostics.

5. Perform the crankshaft relearn procedure, Programming and Relearning
6. Verify no DTCs exist.
7. Reset the clock and preset radio stations.