Component Tests and General Diagnostics
Closing Force and Opening Drag Check1. Remove the headliner.
2. Closing force check:
- With a shop towel (A) on the leading edge of the glass (B), 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.
NOTE: This moon roof switch has two detents in the slide open/closed positions, the first one is for manual operation, the second is for auto operation. Only use the first detent (manual close) while doing this test.
- Read the force as soon as the glass stops moving, then immediately release the switch and spring scale.
3. If the force in not within specification, replace the moonroof motor.
4. Opening drag check. Protect the leading edge of the glass with a shop towel (A). Measure the effort required to open the glass using a spring scale (B) as shown.
5. If the load is over 40 N (4 kgf, 9 lbf), check:
- The side clearance and glass height adjustment.
- For broken or damaged sliding parts. If any sliding parts are damaged, replace them.
- The gear portion and the inner cable for damage. If the gear portion is broken, replace the motor. If the inner cable is damaged, remove the frame, and replace the cable.
- The moonroof motor. If the motor fails to run or doesn't turn smoothly, replace it.
6. Do the moon roof motor reprogram procedure after reinstalling the moon roof motor.