Question about 1996 GMC Yukon

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Courtesy lights do not work when any door are opened. the dash courtesy reastat will turn all the lights on just as with the door opening would when functional. is there some other relay or something else that controls all the door switches because no doors put the lights on now, confusing to me but must be very logical. Tony tonyn@divcomgroup.com

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Check to see if your "Dome Overide" is activated

Posted on May 15, 2009

  • Dick Redman Nov 01, 2012

    OMG I feel stupid. And I'm not. I fix most of my neighbors vehicles for them. I cannot believe I have had this vehicle for over 8 year and never knew there was a "Dome Override" button. Thank you.

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My interior light won't come on in my 1999 Buick Lesabre. I have checked the bulb & the fuse. Can anyone help me with this problem? Any ideas are sincerely appreciated.


Courtesy Lights
The courtesy lights come on under the following conditions:
?€¢
Any door is opened.


?€¢
The interior lamp switch is in the ON position.


?€¢
The keyless entry transmitter unlocks the doors (illuminated entry).

When the key is removed from the ignition switch with all of the doors closed, the courtesy lights light for approximately 25 seconds before fading out.
Battery positive voltage (B+) is applied at all times through the IP fuse block CTSY LP/PWR MIR fuse 6A via CKT 640 (ORN) through the body control module (MALL) to the courtesy lights via CKT 1732 (ORN). The MALL provides a ground through CKT 156 (WHT) for the courtesy lights under the following conditions:
?€¢
The MALL receives an input from a door being opened.


?€¢
The MALL receives an input from the interior lamp being turned ON.


?€¢
The MALL receives an input from the doors being unlocked using the keyless entry transmitter.

The courtesy lamps then light.
When the courtesy lights are activated by opening and closing a door, the courtesy lights will remain on for approximately 25 seconds before fading out after all of the doors are closed. If the ignition switch is turned to START or RUN within the 25 seconds, the lights immediately begin to fade out. If a door is left open, the MALL removes battery positive voltage (B+) to the courtesy lights after 10 minutes. When the courtesy lights are activated by the interior lamp switch, the lights remain on as long as the interior lamp switch is in the ON position. When the courtesy lights are activated by unlocking the doors using the keyless entry transmitter, the lights remain on for approximately 40 seconds. If the doors are locked using the keyless entry transmitter within the 40 seconds, the lights immediately begin to fade out.
Body Control Module (MALL) Diagnostic Mode
For a detailed explanation of the MALL module diagnostic mode, refer to Body Control Module Cell 51.
What interior light ? Dome , courtesy lights etc....They don't work with switch, keyless entry , door opening ?
What

Dec 03, 2015 | Buick Cars & Trucks

2 Answers

Interior lights


This is both a courtesy and safety issue on many high end vehicles. The light from the interior lights can cast enough light to get to front door and possibly show dangers in your path. And after first getting into you car and starting it, you can check the back seat for any unwanted hitchhikers. As for the 10 minute timer, I don't know if this can be adjusted. A Chiltons/Haynes repair manual for you car may have that answer, or, the Buick dealership shop foreman. Best of luck.

May 31, 2015 | 1998 Buick Park Avenue

2 Answers

The coutesy light does not come on when the door is opened every thing else works


If the bulb lights when another door is opened, replace the plunger switch in the jamb of the problem door.
If you are not getting a light when *any* door is opened, check your fuse (often labeled "Courtesy" or "CTSY" in your fuse box). Fuse box can be under the driver's side of the dash or in the engine compartment. Add a comment to your post with the year, make, and model of your vehicle for more specific details about the location of your fuse box, if needed.

Feb 12, 2015 | Cars & Trucks

1 Answer

Interior courtesy light


Page 116 and 117 of the manual explain that there's a two-position slide switch on the map light, DOOR and OFF. The back light has three positions, ON, Door Activated, and OFF.

Pages 116 and 117:
http://techinfo.honda.com/rjanisis/pubs/om/ACC080/ACC0808OM.pdf

Dec 12, 2013 | Honda Cars & Trucks

1 Answer

Dome and Courtesy Lights will not come on when any door is opened


Check and see if the lights come on with the passenger door, if so you have a defective courtesy light switch inside the door.

Oct 30, 2012 | 2004 Chevrolet Avalanche

1 Answer

Fiat doblo door open light stays on and doors won't lock


this is the door open light indicator on your instrument panel correct? it thinks the door is open. do interior courtesy lights work? i.e. turn on off when opening doors? check for "normally open" circuit faults in the door switches

Aug 27, 2012 | Fiat Doblo Cars & Trucks

1 Answer

Courtesy lights stay on after the door has been closed on my 98 LeSabre. What is the cause of that and can I remove the fuse to get the lights off so the battery isn't drained?


Hi Dennis,

Your courtesy lights are controlled by your Body Control Module (BCM). Normal operation is for the courtesy lights to stay on for 2-3 minutes after the door is closed, then turn off.If they stay on longer than about 3 minutes, then there are several possible causes:

1. You may have the "courtesy lamp override switch" in the overide position in the dimmer control on the dash.

2. you may have a door that is not completely closed. You need to check ALL of them.

3. You could have a defective door switch or dimmer control switch

4. you could have a short to ground in one of the door control switch circuits, causing the BCM to "think" that there is a door open.

The CORRECT way to fix this would be to scan your BCM for fault codes and also read the BCM data to find out if it is showing one of the doors as being open when they clearly are not, so you will know which door is causing the problem.

Removing the courtesy lamp fuse will NOT completely fix the battery drain problem if these circuits are shorted or malfunctioning because the BCM will STILL be "trying" to turn these lights on and this will also cause an excessive draw on your battery. However, removing the 15 Amp fuse marked "CTSY LMP/MIRROR" located in the instrument panel fuse block will get the lights turned off and at least slow down how fast your battery is draining.

Oct 25, 2011 | 1998 Buick LeSabre

1 Answer

93 buick regal courtesy lights stay on when car is off


One of your door sensors (or trunk sensor) is signaling that it is open or the dimmer switch is turned all the way up, which turns on the dome and foot lamps. Try turning the dimmer switch all the way down. If this does not fix the problem you will have to get all the door sensors (and trunk sensor) tested to determine which one needs to be replaced.

Mar 15, 2010 | Buick Regal Cars & Trucks

1 Answer

Courtesy lights don't work


You will need to test the Body Control Module, it controls the lights.

Jul 03, 2008 | 1996 Dodge Caravan

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