198001925 - Q001 SUN ROOF NOT WORKING

When the relevant control is operated, the sunroof does not move at all or moves jerkily.
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Carry out the procedure to initialise the sunroof electronic control unit and check whether the roof moves.    See descriptions 7030 SUN ROOF/GLASS PANEL End of diagnosisThe roof does not move.Move on to Step 1.
1CHECK THE SUNROOF ELECTRICAL SUPPLY CIRCUITALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:

  • sunroof supply fuse;

  • sunroof supply relay;

  • sunroof electronic control unit;

  • connection between sunroof relay, fuse and electronic control unit
    See E3060 SUN ROOF

  • correct power supply to the motor.
Move on to Step 21. Connections not correct1. Repair the connections
2. Component defective2. Replace the component involved (in the case of a fuse, find out what caused it to blow).
3. Electronic control unit not operating3. Replace the electronic control unit    Op. 7030B70 SUN ROOF MOVEMENT MOTOR - R+R
4. The motor is not correctly supplied4. Supply the motor directly from the battery bypassing the Body Computer (the cable terminals must be firmly secured to the battery poles). The battery must be charged to >= 13 Volt. IReplace the motor if it does not work    Op. 7030B70 SUN ROOF MOVEMENT MOTOR - R+R
2CHECK THE CORRECT OPERATION OF THE SUNROOF OPERATION SELECTORALL OKPROBLEMS ENCOUNTEREDACTION
Check the electrical control circuit of the sunroof operation selector.Move on to Step 3Control selector not operatingReplace the control selectorOp. 7030B63 FRONT SUN ROOF CONTROL SWITCH - R.R.
3CHECK THE TORQUE REQUIRED TO MOVED THE SUNROOFALL OKPROBLEMS ENCOUNTEREDACTION
Use a torque wrench to check the torque required to move the sunroof by hand (70 Nm max with 100 mm lever).Move on to Step 41. Incorrect effort (more than 100 Nm)1. Move on to Step 4
2. Incorrect effort (between 70 and 100 Nm)2. Roll the roof by hand.
4SUN ROOF MOTOR CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the operation of the sun-roof operating motor: In particular, check:

  • motor pinion status;

  • control rack status.
Move on to Step 5Faults in motor componentsReplace the motor    Op. 7030B70 SUN ROOF MOVEMENT MOTOR - R+R
5CHECK FOR FOREIGN BODIESALL OKPROBLEMS ENCOUNTEREDACTION
Check for foreign bodies inside the sunroof mechanisms (or guides).End of diagnosis1. Foreign bodies present.1. Remove the foreign bodies.
2. No foreign bodies present2. Replace the frame assemblyOp. 7030B90 SLIDING ROOF FRAME - R R