Component Tests and General Diagnostics

Moonroof Closing Force and Opening Drag Check

1. Remove the headliner Service and Repair.

2. Open the moonroof halfway.

3. Closing force check:

- Protect the leading edge of the glass (A) with a shop towel (B), and attach a spring scale (C) as shown.
- Have an assistant hold the switch to close the glass while you measure the force required to stop it.
- Read the force as soon as the glass stops moving, then immediately release the switch and carefully unload the spring scale.









4. If the force in not within specification, remove the moonroof motor Service and Repair, and do these checks:

- Check the gear teeth and the inner cable for breakage and damage. If the gear teeth is broken, replace the motor. If the inner cable is damaged, remove the frame Service and Repair, and replace the cable Moonroof Drain Channel Slider And Cable Assembly Replacement.
- Check the moonroof motor Testing and Inspection. If the motor fails to run or does not turn smoothly, replace it.
- Check the opening drag. Go to step 5.

5. Opening drag check: Protect the leading edge of the glass with a shop towel (A). Measure the effort required to open the glass with a spring scale (B) as shown.





6. If the load is over 40 N (4 kgf, 9 lbf), check:

- The side clearance and glass position adjustment Adjustments.
- For broken or damaged sliding parts. If any sliding parts are damaged, replace them.