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Sunroof Description and Operation (One Connector System)
This diagnostic procedure is to be used for the 1 connector Sunroof System that combines the sunroof control module with the sunroof motor/actuator.
The Sunroof System consists of the following components:
• BATT MAIN 2 Fuse 50 A
• Body control module (BCM)
• RAP relay
• S/Roof Fuse 20 A
• Sunroof module (includes sunroof motor/actuator)
• Sunroof switch
The Sunroof System is controlled by the sunroof switch and the sunroof motor/actuator assembly.
When the ignition is turned to RUN or ACCESSORY, or when the retained accessory power (RAP) system is active, the body control module (BCM) applies a ground to the RAP relay in the instrument panel (I/P) fuse block. This activates the RAP relay and allows battery positive voltage to be applied through the SUNROOF Fuse to the sunroof module. Ground for the sunroof module is supplied from G302.
The sunroof can be placed in 3 preset positions:
When the sunroof switch is placed in the OPEN position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch open signal circuit. The sunroof motor/actuator then applies voltage to the sunroof motor open control circuit and applies a ground to the sunroof motor close circuit. The sunroof motor then opens the sunroof to the full open position.
When the sunroof switch is placed in the VENT position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch open signal circuit. The sunroof module then applies voltage to the sunroof motor open control circuit and applies a ground to the sunroof motor close circuit. The sunroof motor then opens the sunroof to the VENT position.
When the sunroof switch is placed and held in the CLOSED position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch close signal circuit. The sunroof module then applies voltage to the sunroof motor close control circuit and applies a ground to the sunroof motor open circuit. The sunroof motor then closes the sunroof.
The sunroof can be placed in any preferred open position when:
• The sunroof is in the fully opened position by pressing and holding the sunroof switch in the CLOSE position until the panel has reached the desired position then release the CLOSE switch in order to stop the sunroof
• The sunroof is opening, it can be stopped by momentarily pressing either side of the switch.
The sunroof control module, sun roof actuator, and the sunroof motor are integral parts of the sunroof module assembly and are not service separately.
Your best bet , take it to a qualified repair shop or buick dealer .
Next step is to test the sunroof open/close switch itself, it might be faulty. Don't know the Murano, but often the switch-cover can be removed relatively easy. Test the switch (or better said: the wires fitted to it) with a volt-meter. You should have something like 4 wires; ground, + in, open (= + out), close (= + out).
When the fuse is not blown you should easily determine the + in wire (otherwise the fuse probably is blown), then set/hold the switch to open (or close) and see wether there is a + out voltage. If there is, it's probably the sunroof motor, something for the dealer to tackle ...
PS: Stupid question perhaps, but you're sure the sunroof is not in a "locked" state, some sunroofs have a manual (master-) lock ...
Can't say for sure about this particular model, but most vehicles with sunroofs have a manual crank for situations like this. Generally it is located forward of the sunroof on the roof of the interior of the car, sometimes under a panel or interior light. This at least will get the roof closed until the problem can be fixed. It may also allow the sun roof to realign itself and help the electric crank to start working again.
first the easy problem is the blower. it has a faulty resistor. it works on 4 because 4 bypasses the resistor to give you full power.
the sunroof sounds like you've got a shorted wire somewhere. the open power wire has to be shorted to a 12v power sorce. there should be a sunroof fuse. check the owners manual for it's location. but if the wire is shorted it may open without it. you may have to remove the headliner to unplug the sunroof motor itself.
Some customers may comment that the sunroof will no longer respond to the control switch while in a vented, partially opened, or fully opened position.
A software issue with the sunroof control module may cause the sunroof control module to incorrectly indicate a "closed" position, which may result in no power to the sunroof motor.
Verify the customer concern. If a condition is present, replace the sunroof control module with a new sunroof control module, P/N 15847643. Refer to the Service Procedure in this bulletin.
Verify the customer concern by opening and closing the sunroof.
If the sunroof will not open , check the power windows.
If the power windows are also inoperative, check the fuse. If the fuse has opened, refer to Corporate Bulletin Number 05-08-64-004 to install 30A circuit breaker.
If the power windows are fully functional, refer to "Power Sunroof Inoperative" diagnostics (SI Document ID# 1392967) in the Body section of the 2005 Chevrolet Equinox or Saturn VUE Service Manual.
If the sunroof will open (or is already open), but will not close , proceed to Step 2.
Replace the sunroof control module. Refer to "Sunroof Control Module Replacement" procedure in the Body section of the 2005 Chevrolet Equinox Service Manual (SI Document ID# 1196049) or Saturn VUE Service Manual (SI Document ID# 1710479).
Open and close the sunroof in order to confirm that the customer concern has been resolved.
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
hi sounds like a faulty sunroof relay keeping the motor running it may well have blown the fuse or burned the motor out if you connected it back up and it doesn,t work at all but should be able to turn the sunroof back manually look on the sunroof motor there should be sometthing like a slot for a large screwdriver or a bolt head of sorts just wind it back and then check the relays and fuses if your switch is a electronic one make a make shift one and try [simple switch]on and off as this is delicate circiutery and the slightest short can destroy it best of luck yates210456