Engine Control Module: Testing and Inspection

Engine Control Module Programming and Setup

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. The CKP System Variation Learn-Refer to the following:

* Crankshaft Position System Variation Learn Testing and Inspectionfor the 2.4L engine
* Crankshaft Position System Variation Learn Testing and Inspectionfor the 3.5L engine

3. The Throttle/Idle Learn procedure-Refer to Throttle/Idle Learn Testing and Inspection for the 2.4L engine, Throttle/Idle Learn Testing and Inspection for the 3.4L engine, Throttle/Idle Learn Testing and Inspection for the 3.6L engine, or Throttle/Idle Learn Testing and Inspection for the 3.9L engine.
4. 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.
5. 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.
6. Theft Deterrent-Refer to Immobilizer System Component Programming Programming and Relearning.
7. Fuel Composition Diagnosis-Refer to Fuel Composition Diagnosis Fuel Composition Diagnosis for the 2.4L engine or Fuel Composition Diagnosis Fuel Composition Diagnosis for the 3.5L engine.

ECM Reprogramming

* If the 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.

Note: 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 Testing and Inspectionfor the 2.4L engine
* Crankshaft Position System Variation Learn Testing and Inspectionfor the 3.5L engine

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

* Throttle/Idle Learn Testing and Inspectionfor the 2.4L engine
* Throttle/Idle Learn Testing and Inspectionfor the 3.4L engine