Engine Control Module

Engine Control Module

CAUTION!
This vehicle is equipped with two Engine Control Modules (ECM) which cannot be visually distinguished from each other. If ECMs are installed interchanged, the Diagnostic Trouble Code (DTC) memories are not detected. Therefore it is recommended to mark the ECMs, as well as their corresponding harness connectors, before removing in order to prevent interchanging the ECMs.

- Before removing ECM, the control module identification and with it also the coding of the previous control module must be checked. Refer to --> [ Engine Control Module, DTC Memory Checking and Erasing ] Component Tests and General Diagnostics.

Procedure

- Switch off ignition.

- Remove right plenum chamber cover - D -.





- Release and disconnect the connector of the ECM - 1 - and/or - 2 -.





- Remove old ECM and install the new ECM.

- Verify the old coding and code the new ECM. Refer to --> [ Engine Control Module, Adapting Functions and Components ] Programming and Relearning.

- Check DTC memory of new ECM and erase if necessary. Refer to --> [ Engine Control Module, DTC Memory Checking and Erasing ] Component Tests and General Diagnostics.

- Perform test drive.

- Again, check the ECM DTC memory.