Test Point 9

TEST POINT 9
Button, Central Locking System Open/closed, Positive Short

Fault Code 09

Fault Effect: No central locking or unlocking possible

Procedure

1. Pull off plug I at the alarm control unit.

2. Check the central locking button.

Voltmeter at plug I, pin 29 and ground.

- Central locking button not actuated.

Display: 0 V

- Central locking button actuated towards "Closed".

Display: Battery voltage

Voltmeter at plug I, pin 10 and ground.

- Central locking button not actuated.

Display: 0 V

- Central locking button actuated towards "Open".

Display: Battery voltage

3. Disconnect the plug connection on the central locking button.

4. Check the lines from the alarm control unit to the central locking button for positive shorts.

- Voltmeter at plug I, pin 29 and ground.

Display: 0 V

- Voltmeter at plug I, pin 10 and ground.

Display: 0 V