Sunroof Closing Force and Opening Drag Check

1.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.
  • Read the force as soon as the glass stops moving, then immediately release the switch and spring scale.

Closing Force: 200-290 N (20-30 kgf, 44-66 lbf) 

 

3.If the force is not within specification, remove the sunroof motor, then check:

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: