Test Point 45

TEST POINT 45
Central Locking Synchronization

Fault Code 46, 47
These faults are stored in the memory if at least one safe contact does not reach the safe position after two synchronization actuations towards safe.

Fault Effect: No central locking possible

Procedure

1. With PST 2 (drive links), check whether the servo motor reacts with the door closed.

If the servo motors react, select "Driver's side locked" and "Passenger's side locked" in the menu item Input signals, and close the doors

Vehicle not locked
PST 2 display Driver's side not locked
Passenger's side not locked

If the display of the PST 2 deviates from this information or if the servo motors do not react, a fault is present in the supply lead or in the door lock module (microswitch, servo motor)

2. Pull plug I off the alarm system control module

3. Pull plug off door lock (driver's side / passenger's side)

- Voltmeter at alarm system control module plug I, pin 5 and ground

Display: 0 Volts

- Ohmmeter at alarm system control module plug I, pin 5 and ground

Display: infinity

- Ohmmeter on alarm system control module plug I, pin 5 and plug on driver side door lock pin 7

Display: < 5 ohms

- Voltmeter at alarm system control module plug I, pin 28 and ground

Voltmeter display: 0 Volts

- Ohmmeter at alarm system control module plug I, pin 28 and ground

Ohmmeter display: infinity

- Ohmmeter at alarm system control module plug I, pin 28 and plug on passenger side door lock pin 7

Ohmmeter display: < 5 ohms

4. Pull plug off switch for central locking

- Voltmeter at alarm system control module plug I, pin 29 and ground

Voltmeter display: 0 Volts

- Ohmmeter at alarm system control module plug I, pin 29 and ground

Ohmmeter display: infinity

- Ohmmeter at alarm system control module plug I, pin 29 and plug on switch for central locking pin 1

Ohmmeter display: < 5 ohms

- Voltmeter at alarm system control module plug I, pin 30 and ground

Voltmeter display: 0 Volts

- Ohmmeter at alarm system control module plug I, pin 30 and ground

Ohmmeter display: infinity

- Ohmmeter at alarm system control module plug I, pin 30 and plug on driver side door lock pin 3

Ohmmeter display: < 5 ohms

- Voltmeter at alarm system control module plug I, pin 32 and ground

Display: 0 Volts

- Ohmmeter at alarm system control module plug I, pin 32 and ground

Display: infinity

- Ohmmeter at alarm system control module plug I, pin 32 and plug on driver/passenger side door lock pin 3

Display: < 5 ohms

If no faults are detected in the wire, replace the door lock.