2398884 - M03 ONE OF THE ELECTRIC FRONT WINDOWS IS NOT WORKING

With the ignition key in the ON position one of the electric front windows does not wor under any circumstance when the relevant button is operated.
each of the front windows is controlled by a specific door node; the driver's door node in particular can also control the movement of the front passenger window via the B-CAN.
Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
With the diagnostic equipment (Examiner or other instruments) connected:

check the following CAN information:

  • for inactive control units;
  • control unit errors;
  • absence of control unit with error in CAN line
Continue to Step 5Presence of faults Continue according to the instructions for the diagnostic equipment
Driver's/passenger door node not activated Continue to Step 2
2ELECTRICAL EQUIPMENT CHECK (NODE POWER SUPPLY)All OKProblems metOperation
Check the condition of the connection between the junction unit under the dashboard and the door node involved Continue to Step 3Connections broken Restore the connections See   E3050  ELECTRIC FRONT WINDOWS
Fuse blown Replace the fuse after having solved the cause of the problem
3CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the diagnostic equipment (Examiner Plus or Smart) to the diagnostic socket and check:

  • that there are no errors in the Door Node control unit involved
  • the operation of the electric window involved through active diagnosis
  • the variation in the state of the electric window control switch involved in the parameters ambient
Continue to Step 8Presence of errors in the Door Node control unit involved Continue according to the instructions for the diagnostic equipment
Electric window is not activated Continue to Step 6
The state of the switch does not change Continue to Step 4
4ELECTRICAL EQUIPMENT CHECK (ELECTRIC WINDOW SWITCH POWER SUPPLY)All OKProblems metOperation
Check the condition of the connection between the door node involved and the electric window switch See   E3050  ELECTRIC FRONT WINDOWS Continue to Step 5Connections broken Restore the connections See   E3050  ELECTRIC FRONT WINDOWS
5REPLACING THE ELECTRIC WINDOW SWITCHAll OKProblems metOperation

Replace the electric window switch for the door involved, namely:

  • For the left door, the switch unit on the door Op.   7005M14 
For the right door, the switch on the door Op.   7005M12  Then check that the electric window is working properly 		End of diagnosisThe electric window continues not to work Continue to Step 8
6ELECTRICAL EQUIPMENT CHECK (ELECTRIC WINDOW MOTOR POWER SUPPLY)All OKProblems metOperation
Check the condition of the connection between the door node involved and the electric window motor See   E3050  ELECTRIC FRONT WINDOWS Continue to Step 7Connections broken Restore the connections See   E3050  ELECTRIC FRONT WINDOWS
7REPLACING THE ELECTRIC WINDOW MOTORAll OKProblems metOperation
Replace the electric window motor for the door involved Op. 7005M21. Then check that the electric window is working properly End of diagnosisThe electric window continues not to work Continue to Step 8
8CHECK ELECTRIC WINDOW DEVICEAll OKProblems metOperation
Continue to Step 9Electric window device faulty Replace the electric window device Op. 7005M21
Impediments are found Remove the obstacle and check correct operation
9Continue as instructed by the testerAll OKProblems metOperation
Check that the fault is no longer present End of diagnosisRight electric window fault persists Replace the driver's door node Op.   5505A42 
Left electric window fault persists Replace the passenger door node Op.   5505A46 
With the ignition key in the ON position one of the electric front windows does not wor under any circumstance when the relevant button is operated.
each of the front windows is controlled by a specific door node; the driver's door node in particular can also control the movement of the front passenger window via the B-CAN.
Results of the tests
1ELECTRICAL EQUIPMENT CHECK (SWITCH POWER SUPPLY)All OKProblems metOperation
Check the condition of the connection between the junction unit under the dashboard and the switch for the door involved and make sure that the switch is receiving a power supply Continue to Step 2Connections broken Restore the connections See   E3050  ELECTRIC FRONT WINDOWS
Fuse blown Replace the fuse after having solved the cause of the problem
2ELECTRICAL EQUIPMENT CHECK (ELECTRIC WINDOW SWITCH OUTPUT)All OKProblems metOperation
With the ignition ON, operate the electric window switch and check that there is a voltage output from it See   E3050  ELECTRIC FRONT WINDOWS Continue to Step 3The switch unit on the driver's door does not supply the circuit Replace the switch unit Op.   7005M14 
The switch on the passenger door does not supply the circuit Replace the switch Op.   7005M12 
3ELECTRICAL EQUIPMENT CHECK (ELECTRIC WINDOW MOTOR POWER SUPPLY)All OKProblems metOperation
Check the condition of the connection between the switch on the door involved and the electric window motor See   E3050  ELECTRIC FRONT WINDOWS Continue to Step 7Connections broken Restore the connections See   E3050  ELECTRIC FRONT WINDOWS
4REPLACING THE ELECTRIC WINDOW MOTORAll OKProblems metOperation
Replace the electric window motor for the door involved Op. 7005M21. Then check that the electric window is working properly End of diagnosisThe electric window continues not to work Continue to Step 5
5CHECK ELECTRIC WINDOW DEVICEAll OKProblems metOperation
End of diagnosisElectric window device faulty Replace the electric window device Op. 7005M21
Impediments are found Remove the obstacle and check correct operation