Engine Control Module: Service and Repair

ENGINE CONTROL MODULE (ECM) REPLACEMENT

REMOVAL PROCEDURE

IMPORTANT:
- It is necessary to record the remaining engine oil life. If the replacement engine control module (ECM) is not programed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement ECM 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 ECM is not programed with the remaining transaxle fluid life, the transaxle fluid life will default to 100 percent. If the replacement ECM 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. Disconnect the engine harness electrical connector from the mass air flow/intake air temperature (MAF/IAT) sensor.




5. Disconnect the positive crankcase ventilation (PCV) fresh air tube quick connect fitting from the air duct.




6. Disconnect the secondary air injection (AIR) pump inlet tube quick connect fitting from the air cleaner upper housing.




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 ECM.
13. Remove the engine harness electrical connectors from the ECM.
14. Remove the ECM from the air cleaner lower housing.

INSTALLATION PROCEDURE

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




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




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 AIR pump inlet tube quick connect fitting to the air cleaner upper housing.




10. Connect the PCV fresh air tube quick connect fitting to the air duct.




11. Connect the engine harness electrical connector to the MAF/IAT sensor.
12. Connect the negative battery cable.
13. Program the ECM. Refer to Control Module References. Programming and Relearning