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 plug connection at the central locking button.
4. Check the line from the alarm control unit to the central locking button for positive shorts.
Voltmeter at plug I, pin 10 and ground.
Display: 0 V
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.