Engine Control Module: Service and Repair

POWERTRAIN CONTROL MODULE (PCM) REPLACEMENT

REMOVAL PROCEDURE

IMPORTANT:
- It is necessary to record the remaining engine oil life. If the powertrain control module (PCM) is not programed with the remaining engine oil life, the engine oil life will default to 100%. If the replacement PCM 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 oil change.
- It is necessary to record the remaining automatic transaxle fluid life. If the replacement PCM is not programed with the remaining transaxle fluid life, the transaxle fluid life will default to 100%. If the replacement PCM is not programmed with the remaining transaxle fluid life, the transaxle fluid will need to be changed at 83000 km (50,000 mi) from the last transaxle fluid change.




1. Using a scan tool, retrieve the percentage of remaining engine oil and automatic transaxle fluid life. Record the remaining engine oil and transaxle fluid life.
2. Ensure that the ignition is in the OFF position.
3. Disconnect the negative battery cable.
4. Remove the intake manifold cover.
5. Disconnect the engine harness electrical connector from the mass air flow/intake air temperature (MAF/IAT) sensor.




6. Remove the positive crankcase ventilation (PCV) tube from the air cleaner outlet duct.




7. Loosen the air cleaner outlet duct clamp at the throttle body.
8. Remove the air cleaner outlet duct from the throttle body.




9. Disengage the lower housing clips (1).
10. Disengage the upper housing front tabs from the lower housing.
11. Remove the air cleaner upper housing.




12. Disengage the engine harness electrical connector lever locks at the PCM.
13. Remove the engine harness electrical connectors from the PCM.
14. Remove the PCM from the air cleaner lower housing.

INSTALLATION PROCEDURE

IMPORTANT:
- Inspect the following areas prior to installing the PCM:
- No debris in the air filter/PCM housing assembly, or the MAF/IAT sensor inlet screen that may distort the air flow.
- No signs of damage to the air filter/PCM housing assembly, or the intake air duct. If a problem is found, replace the components as necessary.




1. Install the PCM to the lower air cleaner housing.
2. Install the engine harness electrical connectors to the PCM.
3. Engage the engine harness electrical connector lever locks at the PCM.




4. Install the air cleaner upper housing.
5. Engage the upper housing front tabs to the lower housing.
6. Engage the lower housing clips (1).




7. Install the air cleaner outlet duct to the throttle body.

IMPORTANT: Properly install the air cleaner outlet duct to the throttle body. An improperly installed, distorted, or damaged air duct may cause a DTC to set.

8. Tighten the air cleaner outlet duct clamp at the throttle body.

NOTE: Refer to Fastener Notice.

Tighten the clamp to 3 N.m (27 lb in).




9. Connect the PCV tube quick to the air cleaner outlet duct.




10. Connect the engine harness electrical connector to the MAF/IAT sensor.
11. Install the intake manifold cover.
12. Connect the negative battery cable.
13. Program the PCM. Refer to Control Module References. Programming and Relearning