Engine Control Module, Replacing

Engine Control Module, Replacing

Removing

Special tools, testers and auxiliary items required

• Heat gun.

• When the Motronic Engine Control Module (ECM) (J220 ) electrical harness connectors are disconnected, the adaptation values are erased and the DTC memory content remains intact.

Work procedure

Check the identification of the previous Motronic Engine Control Module (ECM) (J220) as follows:

- Connect the scan tool.

- Switch the ignition on.

- Using the scan tool, select "Vehicle information".

- Select " Calibration Identification" in vehicle information.

The electronic control module identification number will be displayed, e.g. 06A906032NA 4983

- Record the electronic control module identification number.

- End diagnosis and switch the ignition off.

Procedure

- Switch the ignition on.

- Actuate the touch-wipe function to allow the wipers to move to the end position.

• The wiper arms will now move into the line of view on the windshield (service position).

- Remove the wiper arms caps.

- Loosen the wiper arm nuts - arrows - several turns.





- Loosen the wiper arms from the wiper axle by rocking slightly.

• Do not force wiper arms off. If the wiper arms cannot be removed, use a standard puller.

- Remove the wiper arms nuts and the wiper arms from the wiper axles.

- Remove the rubber seal - 1 - and the plenum chamber cover - 2 -.





- Disconnect the electrical connectors for windshield washer heating.

- Unclip the cover - 2 - to the Motronic Engine Control Module (ECM) (J220).

- Disconnect the Motronic Engine Control Module (ECM) (J220) electrical harness connector - 1 -and - 3 -.





Motronic Engine Control Module (ECM) ( J220) installation

Installation is performed in reverse order of removal. Note the following:

Motronic Engine Control Module (ECM) ( J220) reprogramming

- The new Motronic Engine Control Module (ECM) ( J220) and immobilizer must be activated.

Final procedures

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Mode 03 - Read DTC Memory.

2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Mode 04 - Erase DTC Memory.

3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Readiness Code.

End of procedure