| 1 |
Check coding. |
- In the Country coding
menu item, check whether the alarm system control module is coded correctly for the place of use.
|
Step 2 |
Recode the alarm system control module (country coding).
->End |
| 2 |
Check central locking switch. |
- Select Central locking button
in the Input signals menu item.
- Actuate central locking switch and check the statuses on the screen.
|
Step 3 |
Step 5 |
| 3 |
Check wiring between the alarm system control module and the door locks for short circuit to ground. |
- Pull plugs A and B off the alarm system control module.
- Pull plug off both door locks.
- Measure resistance between plug A on alarm system control module pin 5 and ground.
- Measure resistance between plug A on alarm system control module pin 28 and ground.
- Measure resistance between plug A on alarm system control module pin 30 and ground.
- Measure resistance between plug A on alarm system control module pin 32 and ground.
- Measure resistance between plug B on alarm system control module pin 3 and ground.
|
Step 4 |
Repair wiring harness.
->End |
| 4 |
Check wiring between the alarm system control module and the door locks for open circuit. |
- Measure resistance between plug A on alarm system control module pin 5 and pin 7 on plug of door lock on driver's side.
- Measure resistance between plug A on alarm system control module pin 28 and pin 7 on plug of door lock on passenger's side.
- Measure resistance between plug A on alarm system control module pin 30 and pin 3 on plug of door lock on driver's side.
- Measure resistance between plug A on alarm system control module pin 32 and pin 3 on plug of door lock on passenger's side.
- Measure resistance between plug B on alarm system control module pin 3 and pin 2 on plug of door lock on driver's and passenger's side.
- Measure resistance between plug B on alarm system control module pin 9 and ground.
|
< 5
Step 5 |
Repair wiring harness.
->End |
| 5 |
Check micro switches of the two door locks (possible detection of faulty driver's/passenger's door lock). |
- Push plugs A and B back onto the alarm system control module.
- Reconnect plugs to both door locks.
- Close doors.
- Vehicle not secured and not locked.
- Select Driver's side locked, Passenger's side locked, Driver's side secured
and Passenger's side secured
in the Input signals menu item.
|
Driver's side not locked.
Passenger's side not locked.
Driver's side not secured (not applicable to USA vehicles).
Passenger's side not secured (not applicable to USA vehicles).
Step 12 |
Step 11 |
| 6 |
Check central locking switch. |
- Remove central locking switch and pull plug off the switch.
- Measure resistance between pins 4 and 1 on the central locking switch.
|
Central locking switch actuated to closed
5
Central locking switch not actuated to closed
Step 6 |
|
| 7 |
Check central locking switch. |
- Measure resistance between pins 4 and 2 on the central locking switch.
|
Central locking switch actuated to closed
< 5
Central locking switch not actuated to open
Step 7 |
|
| 8 |
Check wire from the central locking switch to the control module for short circuit to ground. |
- Pull plug off central locking switch.
- Pull plug A off the alarm system control module.
- Measure resistance between plug A on control module pin 29 and ground.
|
Step 8 |
|
| 9 |
Check wire from the central locking switch to the control module for open circuit. |
- Measure resistance between plug A on control module pin 29 and plug on central locking switch pin 1.
|
|
|
| 10 |
Check wire from the central locking switch to the control module for open circuit. |
- Measure resistance between pins 1 and 2 of plug for central locking switch.
|
Approx. 180 at 20 °C.
Step 10 |
|
| 11 |
Check wire from fuse C 3 to central locking switch. |
- Switch on ignition.
- Measure voltage between plug on the central locking switch pin 4 and ground.
|
> 11 V
Step 12 |
Check fuse C 3 or repair wiring harness.
->End |
| 12 |
- Depending on the test result of the input signals test in step 4, replace the driver's/passenger's door lock.
|
->End |
| 13 |
- Replace alarm system control module.
|
->End |