with Anti-Theft Immobilizer
with Anti-Theft Immobilizer
Special tools, testers and auxiliary items required
• Window Cutter (V.A.G 1561 A)
• Saw Set (V.A.G 1561/14)
• Locking Pliers
• Hot Air Gun from the Wiring Harness Repair Set (VAS 1978 B)
• If the Engine Control Module will be replaced, connect the vehicle diagnostic tester and perform the "Replacing Engine Control Module" guided function.
Removing
- Turn off the ignition.
- Remove the windshield wiper arms, plenum chamber cover and bulkhead plenum chamber.
• Threads of shear bolts are equipped with locking compound. By heating the shear bolts using a hot air gun, inhibition effect of the locking compound is lowered.
Cover the wires, connectors and control modules near the engine control module 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 the two stage switch for air quantity - 3 - to position 3.
By heating the shear bolts, parts of the protective housing are heated intensely. Wear protective gloves to prevent injuries.
- Guide the nozzle of the hot air gun onto the shear bolts.
- Turn the heat gun on and warm the bolts.
- Remove the bolts using locking pliers.
• If the bolts cannot be removed, cut into the head so two parallel surfaces are formed - arrows - and then remove them.
- Insert a screwdriver - A - between the 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 the locking mechanism - 2 - slightly.
- Then slide the ECM out of 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 on to retaining plate.
- Tighten shear bolts - 1 - uniformly until bolt heads shear off.
- Install the bulkhead plenum chamber, the plenum chamber cover and the wiper arms.