Question about Lexus SC 300

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Sunroof will not close

My sunroof won't close. Meter reads a good short when operating the switch and all fuses look good. No power to plug going to the switch at the sunroof with key on.

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  • Anonymous Apr 21, 2009

    Is there anyway to close it (sunroof) manually for now?
    Thanks.

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How to manually close a sunroof on a 94 lexus es300

Posted on Dec 07, 2009

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  • Lexus Master
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Most likely the sunroof motor has failed, remove it and test it.

Posted on Apr 21, 2009

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Sunroof does not open. Fuse is ok and the shade operates normally.


Do you know how to do automotive electrical testing ?????? How to read a wiring diagrams ???? http://www.bbbind.com/free_tsb.html .Videos on youtube Ohms Law Tech Tip from L1 with Dave Hobbs Copy of Voltage Drop Essentials TST Motor Age The only way to find the problem , testing !

Sunroof Description and Operation (One Connector System)
Sunroof
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:
• Open
• Vent
• Closed
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 .

Feb 10, 2017 | 2010 Buick LaCrosse CXS

1 Answer

2006 Chevy Envoy Denali moonroof stuck open manually close


You mean GMC not Chevy ! Chevy doesn't make the Envoy . There is no way to manually close the sunroof !
Power Sunroof Inoperative
If voltage is not measured on the sunroof switch open signal or sunroof switch close signal circuits, the fault could be in the retained accessory power (RAP) supply voltage circuit, battery positive voltage circuit, or sunroof motor ground circuit. If the sunroof motor is not being powered, neither will the sunroof switch signal circuits.

2

Attempt to operate the sunroof through its full range of functions in order to verify that the power sunroof inoperative fault is present.
Does the power sunroof system operate normally?
--
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
YES - Go to Step 3

3
Is the sunroof in the fully closed position?
--
YES - Go to Step 4
NO - Go to Step 7

4
  1. Disconnect the sunroof switch.
  2. Turn ON the ignition, with the engine OFF.
  3. Connect a 3-amp fused jumper wire to the low reference circuit of the sunroof switch harness connector.
  4. Connect the other end of the 3-amp fused jumper wire to the sunroof switch open signal circuit of the sunroof switch harness connector, for 3 seconds.
Did the sunroof open?
--
YES - Go to Step 17
NO - Go to Step 5

5

  1. Disconnect the 3-amp fused jumper wire.
  2. Measure the voltage from the sunroof switch open signal circuit of the sunroof switch harness connector to the low reference circuit of the sunroof switch harness connector.
Does the voltage measure near the specified value?
B+
YES - Go to Step 13
NO - Go to Step 6

6

Measure the voltage from the sunroof switch open signal circuit of the sunroof switch harness connector to a good ground.
Does the voltage measure near the specified value?
B+
YES - Go to Step 14
NO - Go to Step 10

7
  1. Disconnect the sunroof switch.
  2. Turn ON the ignition, with the engine OFF.
  3. Connect a 3-amp fused jumper wire to the low reference circuit of the sunroof switch harness connector.
  4. Connect the other end of the 3-amp fused jumper wire to the sunroof switch close signal circuit of the sunroof switch harness connector, for 3 seconds.
Did the sunroof close?
--
YES - Go to Step 17
NO - Go to Step 8

8

  1. Disconnect the 3-amp fused jumper wire.
  2. Measure the voltage from the sunroof switch close signal circuit of the sunroof switch harness connector to the low reference circuit of the sunroof switch harness connector.
Does the voltage measure near the specified value?
B+
YES - Go to Step 15
NO - Go to Step 9

9

Measure the voltage from the sunroof switch close signal circuit of the sunroof switch harness connector to a good ground.
Does the voltage measure near the specified value?
B+
Go to Step 14
Go to Step 10

10

  1. Disconnect the sunroof motor harness connector.
  2. Measure the voltage from the battery positive voltage circuit of the sunroof motor harness connector to a good ground.
Does the voltage measure near the specified value?
B+
Go to Step 11
Go to Step 19

11

Measure the voltage from the retained accessory power (RAP) supply voltage circuit of the sunroof motor harness connector to a good ground.
Does the voltage measure near the specified value?
B+
Go to Step 12
Go to Symptoms - Computer/Integrating Systems in Computer/Integrating Systems

12

  1. Turn OFF the ignition.
  2. Measure the resistance from the ground circuit of the sunroof motor harness connector to a good ground.
Does the resistance measure less than or equal to the specified value?
5 ohms
Go to Step 16
Go to Step 20

13

Test the sunroof switch close signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 23
Go to Step 18

14

Test the sunroof switch low reference circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 23
Go to Step 18

15

Test the sunroof switch open signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 23
Go to Step 18

16

Test the appropriate sunroof switch signal circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 23
Go to Step 18

17

Inspect for poor connections at the harness connector of the sunroof switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 23
Go to Step 21

18

Inspect for poor connections at the harness connectors of the sunroof motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 23
Go to Step 22

19

Repair the short to ground or open in the sunroof motor battery positive voltage circuit. Refer to Wiring Repairs and Connector Repairs in Wiring Systems.
Did you complete the repair?
--
Go to Step 23
--

20

Repair the open in the sunroof motor ground circuit. Refer to Wiring Repairs and Connector Repairs in Wiring Systems.
Did you complete the repair?
--
Go to Step 23
--

21

Replace the sunroof switch. Refer to Sunroof Switch Replacement .
Did you complete the replacement?
--
Go to Step 23
--

22

Replace the sunroof motor. Refer to Control Module References in Computer/Integrating Systems.
Did you complete the replacement?
--
Go to Step 23
--

23

Operate the system in order to verify the repair.
Did you find and correct the condition?
--
System OK
Go to Step 2

Jul 31, 2016 | Cars & Trucks

2 Answers

Sunroof won't close automatically.


Is the motor receiving power? If not you have to check electrical system to locate the place that is not transmitting power. Could be a fuse/relay, switch, bad connection.

If the motor is turning and nothing happens then the drive mechanism from motor to sunroof is stripped. Not good.

Mar 13, 2016 | 2004 Cadillac CTS

1 Answer

The sunroof is stuck open


Could be a bad motor or switch.,to check,get a meter,turn sunroof to close and check wiring at sunroof,if power is their,then bad motor or switch,check fuse first.

Jun 28, 2015 | 1998 Mazda 626

1 Answer

2001 cadillac deville sunroof open and want close


Check the RAP fuse in the rear fuse box , this fuse powers the sunroof control module ! Fuse Block - Rear , Left rear of the passenger compartment, under the rear seat .
The sunroof module contains the logic for the opening and the closing of the sunroof. The sunroof motor assembly contains the reversible DC drive motor, the gear train, and the limit switch.
The sunroof module determines the sunroof motor direction based on inputs received from the overhead console sunroof switches. When the ignition switch is in the ON position or when retained accessory power (RAP) is active, voltage is applied to the sunroof module via the RAP relay. For a description and operation of the RAP system, refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power. The sunroof module controls the sunroof motor direction by changing the polarity of the applied voltage. The sunroof module remembers the sunroof position whenever the ignition switch is turned to the OFF position. The limit switch is used as an input to the sunroof module to indicate that the glass is fully closed, or in the comfort stop positions. The limit switch is grounded when the sunroof glass is in the fully closed or comfort stop positions, otherwise it is open.
The SLIDE CLOSE mode is initiated by moving and holding the sunroof slide switch (ROOF) forward. This applies a ground provided from the sunroof limit switch low reference circuit to the sunroof switch close vent signal input of the sunroof module. The sunroof module controls voltage to the control circuits of the sunroof motor. The sunroof motor will run until the limit switch contacts are closed. The closing of the limit switch will apply the sunroof limit switch low reference circuit to the sunroof limit switch soft stop signal circuit to the sunroof module, indicating the flush closed position has been reached. As the sunroof is approaching the close position the sunroof glass will force the wind deflector downward.
You need to have a factory scan tool hooked up an have it checked for DTC'S in the sunroof control module ! a code reader will not do this , a code reader will only check the engine codes for OBD 2 .
Important: The following must be completed before using the symptom tables.
  1. Perform Diagnostic System Check - Power Sunroof in order to verify that all of the following are true:
  2. ?€¢
    No DTCs are set.


    ?€¢
    The control modules can communicate via the serial data link.

  3. Review the system operation in order to familiarize yourself with the system functions. Refer to Sunroof Description and Operation
your better off taking to the dealer !

May 09, 2015 | 2001 Cadillac DeVille

1 Answer

2001 yukon xl which fuse is the sunroof fuse


In the under hood junction box , fuse CTSY LP 15 amp . Instrument fuse panel PWR WDO CB 25amp .
Sunroof Motor Synchronization
Synchronization will be necessary anytime the sunroof module battery positive voltage circuit is interrupted. The sunroof module will be synchronized when the controller learns the full vent position. The sunroof system will ignore any open request until the system has been synchronized.
To synchronize the sunroof:
  1. Turn ON the ignition, with the engine OFF.
  2. Using the close/tilt up portion of the sunroof switch, operate the sunroof glass until it reaches the full vent position.
  3. Verify that the system operates normally.
Once the sunroof glass reaches the full vent position, the actual position is stored in the memory of the sunroof module. The sunroof module will stop the motor one motor revolution before the defined actual positions
Hope this help ! good luck !

Dec 24, 2014 | 2001 GMC Yukon XL

1 Answer

My sunroof stopped working on my 2001 cadillac catera


first check fuse if fuse okay see if power going to control switch if yes the sunroof motor could be faulty or in a bind.if no power going to control switch, more likely if fuse good wiring from fuse box to control switch has short or broke ground or poor ground wire.

Sep 01, 2012 | 2001 Cadillac Catera

1 Answer

Sunroof on 1998 chevy cavalier z24 won't close all the way


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

-------------
Sunroof Stuck open? http://howtobyme.blogspot.in/2012/05/2001-lexus-is300-sunroof-stuck-open.html

----------
How to manually close Sunroof on Navigator? http://technoanswers.blogspot.com/2012/01/how-to-manually-close-sunroof-on-2000.html

----------
This will help.
Thanks.

Jun 05, 2012 | Chevrolet Cavalier Cars & Trucks

4 Answers

Electric sunroof stuck open can it be closed manually


THE ELECTRIC DRIVE SYSTEM FOR POWER SUNROOF IS NOT ADJUSTABLE.DONT REMOVE THE SUNROOF MOTOR UNLESS THE SUNROOF IS COMPLETELY CLOSED.OTHERWISE A NEW MOTOR WILL HAVE TO BE INSTALLED AND TIMED WITH A TOOL THAT COMES WITH THE NEW MOTOR.THE GLASS PANEL CAN BE ADJUSTED.OPEN THE INTERIOR SUNSHADE ALL THE WAY BACK AND OPERATE THE SUNROOF UNTIL FULLY CLOSED.THERE ARE THREE GLASS MOUNTING SCREWS ON EACH SIDE OF THE SUNROOF OPENING.INSIDE THE VECHICLE LOOSEN THE SCREWS SET THE FRONT EDGE OF THE GLASS TO BE JUST 1MM BELOW THE SURFACE OF THE ROOF.ADJUST THE GLASS AT THE REAR EDGE TO BE JUST ABOVE 1MM THE ROOF AT THE REAR TIGHTEN THE SCREWS.

May 23, 2010 | 2001 Pontiac Grand Am SE

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