Fault-Tracing Information
Fault-tracing
Information
- Check diagnostic trouble codes (DTCs) in the driver door module (DDM) and passenger door module (PDM).
Note! Ensure there are no diagnostic trouble codes (DTCs) in the driver door module (DDM) and passenger door module (PDM) before carrying out this fault-tracing.
Continue - Function test
-------------------------------------------------
Function test
- Lock and unlock the car a few times.
Note! If locking and unlocking is performed too many times in succession, the lock motors can become hot. The lock motors will stop working temporarily. During the check, the locks should therefore not be locked or unlocked more than 10 times in succession without the motors being given time to cool (approximately 30 seconds).
The car can be locked or unlocked using the central locking button or the remote control.
Check that the door locks/unlocks.
Also check that the lock unit is activated twice for every locking/unlocking.
The door must be locked/unlocked and the lock motor may only be activated once per locking/unlocking.
Is the function OK?
Yes - Fault-tracing information
No - Checking the wiring
-------------------------------------------------
Checking the wiring
- Remove the side of the door.
Check the connector on the lock unit in the passenger door. Check for damage, bent pins and oxidation.
Check the wiring between the passenger door module (PDM) and the lock unit. Check for an open-circuit. Check for a short-circuit to supply voltage.
For information about the connectors and wiring, see the wiring diagram for the relevant car model.
Remedy the cables as necessary.
Other information
- Signal description, driver's door module / passenger door module (DDM/PDM) Signal Description, Driver's Door Module / Passenger Door Module (DDM/PDM)
- Panel front door Panel, Front Side Door, Replacing
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults
Was a fault detected?
Yes - Verification
No - Replacing the lock unit
-------------------------------------------------
Replacing the lock unit
- Ignition off.
If the lock unit does not function as intended and no other fault has been found, the fault is probably internal. The lock motor must be replaced.
Other information
- Door latch, front door Service and Repair
Continue - Verification
-------------------------------------------------
Fault-tracing information
If no fault is discovered, this indicates that a fault has previously been registered, but that the fault is no longer present. The fault is intermittent. No further fault-tracing is required.
Continue - DONE
-------------------------------------------------
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
Lock and unlock the car a number of times. Use the central locking button or the remote control.
The lock unit must be locked or unlocked once on each occasion.
Is the function OK?
Yes - VERIFIED
No - VERIFICATION FAILED
------------------------
VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
-------------------------------------------------
Fault-tracing information
Attempt New Test - Function test
FAULT-TRACING FAILED - DONE
-------------------------------------------------