Service of the powertrain control module (PCM) should normally consist of either replacement of the PCM or electrically erasable programmable read only memory (EEPROM) programming. If the diagnostic procedures call for PCM replacement, inspect the PCM first to see if the replacement is the correct part. If the PCM is faulty, remove the PCM and install the new service PCM.

The new service PCM will not be programmed. You must program the new PCM. DTC P0602 indicates the EEPROM is not programmed or has malfunctioned.

Notice: Do not touch the connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD) damage to the PCM.

Notice: Turn the ignition OFF when installing or removing the PCM connectors and disconnecting or reconnecting the power to the PCM (battery cable, PCM pigtail, PCM fuse, jumper cables, etc.) in order to prevent internal PCM damage.

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. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
3. Remove the left front inner fender brace. Refer to Front Fender Upper Diagonal Brace Replacement in Body Front End.
4. Remove the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement .



5. Remove the air cleaner housing cover screws (2).
6. Remove the air cleaner housing cover (1).
7. Without disconnecting the PCM electrical connectors, remove the PCM and the wiring harness from the air cleaner housing assembly (3).
8. Disconnect the PCM electrical connectors and remove the PCM.

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.

1. Install the PCM to the PCM electrical connectors.

Tighten
Tighten the connectors to 8 N·m (71 lb in).

2. Install the PCM and the wiring harness to the air cleaner housing assembly (3).



3. Install the air cleaner housing cover (1).
4. Install the air cleaner housing cover screws (2).

Tighten
Tighten the screws to 4 N·m (35 lb in).

5. Install the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement .
6. Install the left front inner fender brace. Refer to Front Fender Upper Diagonal Brace Replacement in Body Front End.
7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
8. The new PCM must be programmed. Refer to Control Module References in Computer/Integrating Systems.