Engine Control Module: Testing and Inspection

Engine Control Module Programming and Setup (LAF)

The following service procedures require either a programming or a setup event performed for a complete repair.

ECM Replacement

If the engine control module (ECM) is replaced, the following procedures must be performed:

1. ECM Reprogramming-Refer to Service Programming System (SPS) (Service Programming System (SPS)).
2. Theft Deterrent-Refer to Immobilizer System Component Programming (with BTM) (Immobilizer System Component Programming (With BTM))Immobilizer System Component Programming (without BTM) (Immobilizer System Component Programming (Without BTM)). The ECM will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. An ECM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password, and will require a learn procedure after programming to learn the current vehicle's password.
3. Crankshaft Position Variation Learn-Refer to Crankshaft Position System Variation Learn (Testing and Inspection).
4. Idle Learn Procedure-Refer to Throttle/Idle Learn (Throttle/Idle Learn).
5. Engine Oil Life Reset-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was replaced.
6. Transmission Fluid Life Remaining-When available, use the scan tool to reset the Transmission Fluid Life Remaining back to the original percentage recorded before the module was replaced.

ECM Reprogramming

* If the engine control module (ECM) needs to be reprogrammed, refer to Service Programming System (SPS) (Service Programming System (SPS)).
* Engine Oil Life Remaining-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was reprogrammed.

Setup for Component Replacement

If any of the following components are replaced, a Crankshaft Position Variation Learn must be performed. Refer to Crankshaft Position System Variation Learn (Testing and Inspection).

* Engine replacement
* Any engine repair that disturbs the CKP sensor or its relationship with the crankshaft reluctor wheel
* CKP sensor

If the throttle body is replaced or a throttle body cleaning procedure is completed, the Idle Learn must be performed. Refer to Throttle/Idle Learn (Throttle/Idle Learn).