Test Point 3

Voltage failure - Refer to Test Point 2.

during alarm output Test Point 4

Position of the drives This fault is also stored if, for example, the driver's door is open unplausible wlien the key is usecl actuate the central locking system from the passenger's door.

- Disconnect plug II from control unit. Attach Special Tool 9540 at wiring harness.

With the doors unlocked, ground must be present at pin 10. At the same time, no ground must be present at pin 12. With the doors locked, ground must be present at pin 12. At the same time, no ground must be present at pin 10.

- If required, check wiring according to wiring diagram. Note

The wires are routed across connectors T 28 (driver's door) and T 27 (passenger's door).

Check LH and RH door contact switches for shorts to ground.

Check wire from alarm control unit plug li terminal 21 to the door contacts for short to ground, using Special Tool 9540.

Test Point 5

Doors(s) open during activation

Fault, Fault Code

Possible Causes, Elimination, Remarks

- Check wire from relay base gong relay of central relay terminal D for short to ground.

Test Point 6

Engine compartment open during activation

- Check engine hood contact switch for short to ground.

- Check wire from alarm control unit plug II, terminal 5, to engine hood contact switch for short to ground using Special Tool 9540.

Note

The wire is routed across connector T 13.

- The wire to the contact switch is routed across the Central Electrical System.

Test Point 7

Luggage comp, open during activation

- Check tailgate contact switch for short to ground.

- Check wire from alarm control unit plug II, terminal 3, to contact switch for short to ground, using Special Tool 9540.

Note

Different wiring for Coupe and Cabriolet (refer to wiring diagram)

Test Point 8

Glove comp, open during activation

Check glove compartment switch and glove compartment light for short to ground.

Check wire from alarm control unit plug II, terminal 16, to contact switch for short to ground, using Special Tool 9540.

Fault, Fault Code Possible Causes, Elimination, Remarks

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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