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I have a 04 Pontiac G6 4 door sedan the sun shade opens up no problem but when I try to open the glass the first one lifts up but that's it the other 3 pieces dont

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Jeff Armer

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  • Pontiac Master
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Power Sunroof System Components
The power sunroof system consists of the following components:
• One tilting glass sunroof panel--For sunroof vent functions
• Three sliding glass sunroof panels, which allow the sunroof to open in sections
• Power sunshade panel--An adaptable panel which is rolled out or rolled in and stored by the sunshade motor/actuator in order to cover or uncover the sunroof glass panels
• Power sunroof switch--A rotary style switch controlling sunroof switch signal inputs to the sunroof motor/actuator
• Power sunshade switch--A momentary press style switch controlling sunshade switch signal inputs to the sunshade motor/actuator
• Power sunroof motor/actuator--Comprised of both the sunroof motor/actuator and the sunroof electronic control module, it is sometimes referred to as the sunroof control module/motor assembly.
• Power sunshade motor/actuator--Comprised of both the sunshade motor/actuator and the sunshade electronic control module, it is sometimes referred to as the sunroof slave module.
Sunroof Motor/Actuator and Sunroof Switch
The sunroof motor/actuator assembly is located at the rear of the passenger compartment, above the rear view window, between the headliner and the roof structure. The sunroof motor/actuator assembly also contains the sunroof electronic control module and the two components are serviced together as a unit.
Battery positive voltage is supplied to the motor/actuator at all times through the 25-amp LAMELLA ROOF fuse located in the rear fuse block. Whenever the ignition is turned to RUN or ACCESSORY, or when the retained accessory power (RAP) system is active, the motor/actuator is also supplied battery positive voltage through the accessory voltage circuit and the 10-amp ROOF/HEAT SEAT fuse which is located in the body control module (BCM). The sunroof motor/actuator is grounded through splice S403 to body ground G302.
The sunroof motor/actuator supplies voltage to the sunroof switch through three internal resistors and three hard wire circuits. The 3 hard wire circuits are:
• Sunroof switch data 1 signal circuit
• Sunroof switch data 2 signal circuit
• Sunroof switch data 3 signal circuit
The sunroof switch, which is also grounded to G302, is a rotary style switch. When the switch control lever is turned in a rotational direction, the appropriate switch contacts and signal circuits for the selected mode are simultaneously opened and/or closed to ground in order to provide the appropriate combination of voltage signals to the sunroof motor/actuator. The sunroof motor/actuator interprets the signals, and then applies battery positive voltage and ground to the appropriate circuits of the integral power sunroof motor in order to move the sunroof glass panels. At the same time, the sunroof motor/actuator sends a serial data message, via the keyword 2000 serial data circuit, to the sunshade motor/actuator to open the sunshade panel in conjunction with the sunroof glass. As the sunroof glass panels slide rearward to the open position, the sunshade motor/actuator simultaneously rolls in the adaptable sunshade panel.
The sunroof switch is mounted in a bezel which is located above the rearview mirror.


Circuit/System Description
The sunroof system is controlled by the sunroof switch and the sunroof control module/motor assembly, which is also known as the motor/actuator assembly.
The sunroof control module is supplied battery positive voltage at all times through the 15A SUNROOF fuse located in the rear fuse block. Whenever the ignition is turned to RUN or ACCESSORY, or when the retained accessory power (RAP) system is active, the module is also supplied voltage through the accessory voltage circuit and the 10-amp ROOF/HEAT SEAT fuse located in the body control module (BCM). The sunroof control module is grounded through the ground circuit at G302.
The sunroof control module supplies voltage to the contacts of the sunroof switch through the sunroof switch close signal circuit and the sunroof switch open signal circuit. The sunroof control module also supplies ground to the switch contacts through the sunroof switch low reference circuit. When the switch is operated, the contacts and signal circuit for the selected mode are closed to ground, the voltage is pulled low in the module, and the appropriate signal is recognized by the control module. The control module then internally applies battery positive voltage and ground to the appropriate circuits of the reversible power sunroof motor in order to move the sunroof glass panel to the open, close, or vent


Do you know how to do electrical testing ?
Circuit/System Testing
Ignition OFF, disconnect the harness connector at the sunroof control module.
Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal 1 and ground.
? If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 3 and ground.
? If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
Verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.
? If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
Connect the harness connector at the sunroof control module.
Ignition OFF, disconnect the harness connector at the sunroof switch.
Ignition OFF, test for less than 1.0 ohm of resistance between the low reference circuit terminal B and ground.
? If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, test or replace the sunroof control module.
Ignition ON, test for B+ between the signal circuit terminal C and ground.
? If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the sunroof control module.
Test for B+ between the signal circuit terminal A and ground.
? If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the sunroof control module.
If all circuits test normal, test or replace the sunroof switch.

Posted on Oct 13, 2017

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5 Related Answers

Anonymous

  • 1 Answer

SOURCE: rear door lactch will not open but other doors do

I have the same issue on my 2002 Escape. I hear the cylinder motors engaging on the doors but not the liftgate so all I can assume is the wiring loom on the passenger side upper corner of the liftgate needs attention. That is where the wiring is for the door motor that releases the window and gate. I will post again after I solve this. 6/28/2009

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paul campbell

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SOURCE: sunroof on 2003 vw beetle

there is a part of the shade jammed in the track if you remove the piece is jammed it will work properly

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Superbovine

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SOURCE: My rear hatch and glass hatch will not open from the outside.

This is extremely common!
The micro-switch inside the glass hatch release is faulty, telling the door that it is partially depressed, thus shutting down opening for safety reasons.
You can verify this by opening the glass hatch (there is a access panel at the bottom of the door on the inside), removing the trim cover from behind the glass handle (two philips screws and one plastic push in fastener), then unplugging the glass handle.
Your door will now function normally, but without glass opening ability until you replace the handle.
The handle only takes a few 10mm nuts to remove and can be changed in a few minutes. It retails for around $35 from your dealer.

Posted on Sep 09, 2009

Anonymous

  • 3 Answers

SOURCE: My 04 Honda Civic fuel door will not open. Can

You can get to the latch through the trunk. In the trunk, pull the liner away from the area adjacent to the fuel door. You'll see a black cable that goes to the fuel door latch behind a metal frame. Reach in and turn the latch mount 90 degrees to release it from the fuel door frame. Your fuel door will now be open. You will need to repair or replace the cable, but at least you'll be able to fuel up for now.

Posted on Mar 06, 2010

John M Grubb Sr

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SOURCE: 2005 Tahoe, tailgate and liftglass won't unlock or open

I found this URL on internet http://www.chefseattle.com/blog/site-news/suburban-rear-liftgate-wont-unlock-how-to-fix/ Maybe it will help you.

Posted on May 15, 2010

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