Engine Control Module: Service and Repair

REMOVAL




1. Disconnect negative battery cable.
2. Disconnect intake air temperature (IAT) sensor connector.
3. Loosen clamp at air cleaner assembly.
4. Remove push pin attachment from outlet resonator/duct assembly to support bracket.
5. Loosen clamp at throttle body assembly.
6. Disconnect PCV fresh air hose at cam cover.
7. Remove outlet resonator/duct assembly.
8. Remove J1 and J2 connectors at ECM
9. Remove four ECM attachment bolts.

INSTALLATION




1. Install ECM.
2. Install ECM bolts.

Torque:
Engine Control Module Bolts: 8 N.m (71 in-lbs)

3. Connect J1 and J2 ECM electrical connectors.
4. Install outlet resonator/duct assembly into position.
5. Connect PCV fresh air vent hose assembly.
6. Tighten clamp at throttle body assembly.
7. Position outlet resonator/duct assembly up with support bracket and install push-pin.
8. Tighten clamp at air cleaner assembly.
9. Connect intake air temperature (IAT) sensor connector.
10. Connect negative battery cable.

Torque:
Battery Terminal Bolts: 17 N.m (13 ft-lbs)

NOTE: If a new ECM is being installed, it MUST be reprogrammed with new software and calibrations. (Refer to "Service Stall System (SSS) User Guide" for reprogramming procedures.) The ECM may be damaged if the reprogramming process is interrupted. Make sure the Scan tool is connected securely to the DLC and the vehicle battery has sufficient charge.

Make sure the original ECM has the correct VIN and vehicle options.

11. Reprogram ECM. Programming and Relearning

IMPORTANT: The new ECM must learn the passlock password from the ECM. When the ECM reprogram is completed, use the SSS to perform the "ECM Passlock Relearn Procedure." Programming and Relearning

12. Perform the "Passlock Relearn Procedure" using the SSS. Programming and Relearning
13. Ignition Off for 10 seconds.

IMPORTANT: Following ECM reprogramming, the ECM will have to learn the crankshaft notch variation for misfire diagnostics.

14. Perform the crankshaft relearn procedure. Programming and Relearning
15. Verify no DTCs exist. (If one exists, refer to the specific DTC diagnostic.)