Engine Control Module Programming and Setup 3.5L LZ4/LZE, 3.9L LZ9
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:
- ECM Reprogramming--Refer to
Service Programming System (SPS)
.
- The CKP System Variation Learn--Refer to
Crankshaft Position System Variation Learn
for the 3.5L engine or
Crankshaft Position System Variation Learn
for the 3.9L engine.
- 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.
- 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.
- Theft Deterrent--Refer to
Programming Theft Deterrent System Components
.
ECM Reprogramming
| • | 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. Refer to
Crankshaft Position System Variation Learn
for the 3.5L engine or
Crankshaft Position System Variation Learn
for the 3.9L engine.
| • | Any engine repair that disturbs the CKP sensor or its relationship with the crankshaft reluctor wheel |
