72742 - P10 CENTRAL LOCKING NOT WORKING

When the central locking is operated via the driver's door using the mechanical key and/or from the inside, via the locking/unlocking buttons, the central locking system does not work.
The door locking/unlocking command reaches the Body Computer Node via the B-CAN. The latter sends the signal received to the door nodes and to the luggage compartment node which controls the locks for the rear doors and the boot lid.
STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
0PRELIMINARY CHECKALL OKPROBLEMS ENCOUNTEREDACTION

  • Check that the independent driver's door option is deactivated
  • Check that the door locking/unlocking system is working properly using the interior buttons
Move on to Step 1. independent driver's door option activated1. Disable the function via the CONNECT
2. System not working using the buttonsMove on to Step
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the Examiner diagnostic equipment connected, check:

  • no control unit inactive;
  • no faulty control units;
  • no control units with faulty CAN line;
Move on to Step Presence of faults.Continue following the instructions for the diagnostic equipment.
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the Examiner diagnostic equipment, check that the learning of the change of status of the door locking/unlocking switch is correct by turning the key in the lock barrelMove on to Step The door lock change of status is not learnt.Move on to Step
3CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect the Examiner diagnostic equipment and carry out the active diagnosis of the locking/unlocking at the driver's door node.Move on to Step The door does not lock/unlock.Move on to Step
4LOCK LINKAGE CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the operation of the linkage and the condition of the connectionsMove on to Step Linkage faultyRestore operation
5CHECK ELECTRICAL CIRCUITALL OKPROBLEMS ENCOUNTEREDACTION
Check the continuity/insulation of the electrical connection between the door lock and the door node (Wiring Diagram ) E3040 CENTRAL LOCKING Move on to Step Electrical connection broken or not insulated.Restore the electrical connection (Wiring Diagram ) E3040 CENTRAL LOCKING
6CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer present.Fault persistsReplace the door lock