Engine Control Module

Engine Control Module

=> [ without Anti-Theft Protection ]

=> [ with Anti-Theft Protection ]

without Anti-Theft Protection

• If the Engine Control Module (ECM) will be replaced, connect the vehicle diagnostic tester and perform the "Replacing Engine Control Module" guided function.

Removing

- Switch off ignition.

- Remove the wiper arms and plenum chamber cover.

- Remove the plenum chamber bulkhead.

- Disconnect the front connector - 1 - from the ECM.





- Pry up the locking mechanism - 2 - slightly.

- Then slide the ECM out of the retainer - arrow -.

- Disconnect the rear connector from the ECM.

Installing

- Connect and lock the rear connector to the ECM.

- Slide the ECM onto the retaining plate.

- Connect and lock the front connector to the ECM.

- Install the plenum chamber bulkhead.

- Install the wiper arms and plenum chamber cover.

with Anti-Theft Protection

Special tools, testers and auxiliary items required

• Locking pliers

• Electric Cutter (V.A.G 1561A)

• Saw Set (V.A.G 1561/14)

• Heat Gun (VAS 1978/14A)

• If the Engine Control Module (ECM) will be replaced, connect the vehicle diagnostic tester and perform the "Replacing Engine Control Module" guided function.

Removing

- Switch off ignition.

- Remove wiper arms and plenum chamber cover.

- Remove the plenum chamber bulkhead.

• The threads of the shear bolts are coated with locking compound. By heating the shear bolts using a hot air gun, inhibition effect of the locking compound is lowered.

CAUTION!
Cover the wires, connectors and control modules near the ECM to prevent them from being burned.

Perform the adjustments on the hot air gun - 4 - as shown:

- Turn potentiometer for temperature adjustment - 2 - to maximum heat output (600 °C (1112 °F)).





- Move two stage switch for air quantity - 3 - to position 3.

CAUTION!
By heating the shear bolts, parts of the protective housing are heated intensely. Wear protective gloves to prevent injuries.

- Place nozzle for the hot air gun onto the shear bolts.

- Switch heat gun on and heat the bolts.

- Remove bolts using locking pliers.

• If the bolts cannot be removed, cut into the head so two parallel lines are formed - arrows - and then remove them.





- Insert a screwdriver - A - between protective housing and retaining plate - arrow -.





- Pry the protective housing upward using the screwdriver - A - and pull it off sideways from the retaining plate - arrow -.





- Disconnect the front connector - 1 - from the ECM.





- Pry up locking mechanism - 2 - slightly.

- Then slide ECM out of the retainer - arrow -.

- Disconnect the rear connector from the ECM.

Installing

- Connect and lock the rear connector to the ECM.

- Slide the ECM onto the retaining plate.

- Connect and lock the front connector to the ECM.

- Slide the protective housing onto the retaining plate.

- Tighten the shear bolts - 1 - uniformly until the bolt heads shear off.





- Install the plenum chamber bulkhead.

- Install the wiper arms and plenum chamber cover.