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check fuse and relay if good than possible motor ot track problem their should be a mechanical bypass that will let you close it if stuck open the following information is courtesy of monte carlo forum
To check the condition of your original sunroof guides:
Gl*** in closed position.
Locate & remove 3 torx bolts on each side of sunroof glass. Lift glass out of sunroof opening & set aside in a safe place.
Locate "J" shaped cover plate at front of sunroof track assembly. Remove 2 torx bolts from each cover plate.
Lift up bracket to remove.
Inspect the plastic guides on each side. The sunroof cables attach to guides on front outer corner. Inspect this area closely for damage.
Do not operate the sunroof with the J plates removed.
Troubleshooting:
If the sunroof guides are not broken & the glass is a uniform height along the rear edge your problem may be a stripped gear inside the motor. The motor has a manual override:
Get access to the motor by removing the map light/switch console or lowering the front of the headliner.
Insert a large standard screwdriver into the nylon bushing at the center of the motor hub. Push up & turn the screwdriver to manually move the sunroof glass. If the unit will fully open & close manually, you most likely only need a replacement motor.
If your sunroof is stuck in the open position follow these steps to get it closed:
Remove the glass.
Try to close the unit without the glass. Many times one side will still be operational and close correctly.
Try to slide the inoperable lift arm forward. If it moves, slide it forward until it stops.
You now need to slide the original plastic guide forward to lower the arm to the closed position. Using a standard screwdriver, push it forward. The lift arm should begin to lower.
If the lift arm will still not fully lower, remove the J plate as explained above, sometimes the sunroof cable will need to be lifted up to allow the guide to fully slide forward.
Look toward the back of the sunroof on inside, if there is a small circular piece of plastic or other slot like opening. Open it with proper tool, probably a screw driver. In there should be the part u will need to turn, with the proper tool usually sized to fit socket & ratchet, or Allen key, or star wrench. In order to close, or begin to close the sunroof manually. Usually u can get it started manually, then run it as u usually would.
To manually closed you remove the panel that houses the sunroof button and you'll see the motor which has a hex hole in the center that you can turn clockwise direction with a hex socket, to close it.
You have to remove the overhead control unit (front dome lamp assembly) to gain access to the sunroof motor(link below) You can then put an allen wrench/socket into the drive motor for the sunroof and turn to close. This works if the sunroof motor has failed. If the problem is the switch, you might get lucky by pointing the key at the IR pickup on the driver's door handle and holding the lock button. That should close all of the windows and the sunroof. Mercedes 211 overhead mirror removal
It can be faulty motor or loose wiring issue or faulty /weak sunroof controlling switch or there is some blockage for sunroof to come down to close or sunroof out of its track the headliner is out of its way.There re many possibilities.All this basics needs to be checked.For further troubleshooting,go through this help link:---- Click the link mentioned below:------ How to Manually Close the
Sunroof ?http://howtobyme.blogspot.in/2012/05/how-to-manually-close-sunroof-on-2001.html
as far as manually closing dont know of anyway that is near simple
Open the hood on your Volvo 940 and loosen the negative battery cable with your socket set. Take the negative battery cable off after you have loosened the nut.
Find your Volvo's sunroof switch on the overhead console between the visors. Locate the small retaining screw at the back of the window-controller button's plastic housing.
Use a Phillips screwdriver to remove that screw. Set it aside in and then remove the plastic housing.
Find the wiring harness plug in the back of the switch. Press in the two tabs on the sides of the plug and pull it out. The two tabs are on the sides of the plug. Pull the old switch out and set the new one in place with your fingers.
Plug the wiring harness into the back of your Volvo's new sunroof switch. Hold the new switch up and replace the plastic housing. Install the screw to hold the plastic in place.
If you remove the plastic cover in front of the sunroof, you will see the motor. There is a plastic slot to stick a screwdriver into. Push the screwdriver into the slot until you hear a release pin click then turn the screwdriver clockwise. The sunroof should close.
you can open and close you sunroof "manually" remove the plastic cover next to your sunroof and dome light buttons (above your rearview mirror) there is an allen wrench stored inside... insert the wrench into the corresponding hole and you can close or open you sunroof by turning the wrench
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