Engine Control Module J623, with an Anti-Theft Immobilizer

Engine Control Module J623, with an Anti-Theft Immobilizer

• If it is desired to replace Engine Control Module (ECM), connect the vehicle diagnostic tester and perform the guided function "Replace Engine Control Module (ECM)".

Special tools, testers and auxiliary items required

• Locking Pliers

Removing

- Turn off the ignition.

- Remove the windshield wiper arms.

- Remove the plenum chamber cover.

• In order to prevent the control module from coming in contact with water, some control modules have a cover. They are secured to the ECM with bolts - 1 -.

- Remove the bolts - 1 -.






- Remove the cover, if present, carefully.

- Cover the plenum chamber with a clean cloth so that it does not get scratched.

- Raise the ECM with retaining mount slightly.

- Release the ECM - arrows - and pull it out slightly.

- Bend the raised ends - 1 - of the locking bracket outward.






- Remove the shear bolts - 2 - using locking pliers and remove the locking bracket.

- Slide the connector catches - 1 - on the ECM outward and remove both connectors.






- Remove the ECM.

Installing






- Slide the ECM - 1 - in the - the direction of the arrow - into the mounting frame until it engages.

- Tighten the mounting frame.

Tightening specification: 6 Nm

- Connect the connector on the ECM and slide the catches - 1 - inward.






- Take a new locking bracket and tighten the new shear bolts evenly until bolt heads shear off.

- Install the plenum chamber cover.

- Install the windshield wiper arms.