Diagnosis

DIAGNOSIS

The sliding roof assembly electrical system must be tested before the mechanism is investigated.

1. Lower the roof console to provide access to the sliding roof motor and its harness connector.

2. Connect the PDU to the vehicle and select "Sliding Roof Motor".

3. Ensure that the sliding roof is fully closed, either electrically or mechanically.





4. Follow the instructions on the PDU screen. Use the current probe to check the measurement at the motor harness connector.

5. Press and hold the sliding roof switch in the open position and read the current.





6. Press and hold the sliding roof switch in the close position and read the current.

Note:
The operating current should be 3.5 Amp when sliding and 6.0 Amp maximum, with an average, recorded on the PDU, of the two figures, i.e. around 4.75 Amp.

^ Intermittent operation can be caused by the Sliding Roof Control Module, (SRCM), not being correctly located against the cables.





^ The SRCM retaining tang (arrow) should be firmly engaged in the base plate, as indicated in image, and secured by a tie-strap between the cables.