Remove Engine Control Module (ECM): Removing

Connect VAS5051 tester and select vehicle system "01 - Engine Electronics". Ignition must be switched on for this.

Fig 1: VAS5051 Tester Display

VAS5051 tester display will indicate the control module identification and coding -2-.

NOTE: Always allow display of control module identification first and print it out.

Switch ignition off.
Pull off of plenum chamber cover rubber seal in direction of arrow.
Remove cover -1- toward front.

Fig 2: Removing Plenum Chamber Cover Rubber Seal
Remove cover for E-box, plenum chamber (arrows).

Fig 3: Removing E-Box Plenum Chamber Cover
Using a screwdriver, carefully pry off retaining bracket (arrow).

Fig 4: Removing Bracket Of ECM With Antitheft Housing

NOTE: Item -1- in Fig 4 shows Engine Control Module (ECM) with anti - theft housing.

To restrict accessibility (for theft prevention) to the harness connectors and the Engine Control Module (ECM), the ECM -1- is screwed to a metal anti-theft housing -4- via a locking mechanism -2- and snap-off screws -3-. See Fig 5.

Fig 5: Removing ECM With Antitheft Housing

The threads of the snap -off screws are coated with locking compound to make it more difficult to remove the snap -off screws.

To disconnect the harness connector from Engine Control Module (ECM) (e.g. when connecting a test box or when replacing the ECM), the ECM must be removed from the metal anti -theft housing. This procedure is described as follows.

The following equipment is required:

Fig 6: Identifying Special Tools

Heat gun -1- (from VAS1978 Wiring Harness Repair Kit)
Adapter nozzle -2- (also from VAS1978 Wiring Harness Repair Kit)
Standard locking pliers