Engine Control Module: Testing and Inspection

Engine Control Module Programming and Setup

The following service procedures require either a programming or a setup event be 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) (Programming and Relearning) .
2. The CKP System Variation Learn-Refer to the following:

* Crankshaft Position System Variation Learn (Service and Repair) for the 2.4L engine
* Crankshaft Position System Variation Learn (Service and Repair) for the 3.5L engine
* Crankshaft Position System Variation Learn (Service and Repair) for the 3.6L engine

3. 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 replaced.
4. 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.
5. Theft Deterrent-Refer to Immobilizer System Component Programming (Programming and Relearning) .



ECM Reprogramming

* If the ECM needs to be reprogrammed, Refer to Service Programming System (SPS) (Programming and Relearning) .
* 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.

Important: After programming, perform the following to avoid future misdiagnosis:


* Turn the ignition OFF for 30 seconds.
* Turn the ignition ON with the engine OFF.
* Use the scan tool in order to retrieve history DTCs from all modules.
* Clear all history DTCs.



Setup for Component Replacement

The replacement of some components will require a setup procedure for complete repair.


If any of the following components are replaced, the CKP Variation Learn Procedure must be performed:

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


Refer to the following:

* Crankshaft Position System Variation Learn (Service and Repair) for the 2.4L engine
* Crankshaft Position System Variation Learn (Service and Repair) for the 3.5L engine
* Crankshaft Position System Variation Learn (Service and Repair) for the 3.6L engine