72667 - M10 (ELECTRIC) REAR WINDOWS NOT WORKING

When the ignition is in the ON position, when the buttons located in the doors are operated the electric rear windows do not work at all.
the electric rear windows are managed by the luggage compartment node; the driver's door node, in particular can operate and also deactivate the electric rear windows via the B-CAN.
STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
0PRELIMINARY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the operation of the electric rear windows has not been inhibited by the driver's door node (ideograms on the rear buttons off)Move on to Step Operation of the rear electric windows inhibitedActivate the operation of the electric rear windows via the driver's door node
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the diagnostic equipment (Examiner or other instruments) connected, check the following information at the CAN network:

  • no control unit not activated;
  • that there are no faulty control units;
  • no control unit with faulty CAN line;
Move on to Step 1. Presence of faults1. Continue following the instructions for the diagnostic equipment
2. Luggage compartment node not activatedMove on to Step
2ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check:

  • the connection between the luggage compartment junction unit and the luggage compartment node
Move on to Step Connections interruptedRestore the connections (Wiring Diagram ) E3051 ELECTRIC REAR WINDOWS
3CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect the diagnostic equipment (Examiner or Examiner plus) to the diagnostic socket:

  • that there are no errors in the luggage compartment node control unit
Move on to Step Presence of errors in the luggage compartment node control unitContinue following the instructions in the diagnostic table
4SERVICES RELAY ELECTRICAL CIRCUIT CHECK (POWER CIRCUIT)ALL OKPROBLEMS ENCOUNTEREDACTION
Check the continuity of the connections between the services discharge relay and the luggage compartment node (Wiring Diagram ) E3051 ELECTRIC REAR WINDOWS Move on to Step Connections interruptedRestore the connections (Wiring Diagram ) E3051 ELECTRIC REAR WINDOWS
5CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentFault persistsReplace the luggage compartment node