Question about 1996 Oldsmobile Aurora

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Interior lights not working

The GM repair shop checked all 5 relays. They are in working order. Also the manual switch is not working. The repair shop and GM don't know why.

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I had a very similar problem with my 99.I'll bet your tail and perimeter lights are out as well.I went through and cleaned the contacts on the headlight switch and that didn't take care of it. I also went through the entire electrical system ran all the tests for power and I changed the lamp control module. So after I had gone through everything I could think of that could possibly be the problem including swapping out for more relieved and pulling out all of the fuses replace them I started the car and lights came on I thought I'd fixed the problem. But after a few days problem returned.keep in mind the headlights work I don't know if that's the same with yours. I started thinking about it and decided to start the car and turn on the headlight switch and go round and wiggle all relays pulled all the fuses stuck them back in.I tapped on a couple of the other that we're not related to that system.I went around to a couple other places where related components we're located and kinda banged on the area with my hand to see if that would make it kick on. I have a remote starter in my car it's located right onthe bottom of the steering column the bottom of my steering column. I had talked to the guy that installed it and ask him if any of the wires for that connected into this system there is one that splits the wire going to the starter enable module for the cars security pass key system. I just finished up an hour ago. I found the problem when I got in the car and banged on the dash and around the fog light switch and by the sentinel panel. The lights came on when I kicked the bottom of the cover panel that goes between the firewall and the drivers knee bolster. Its the one that the obd 2 plug goes through. I didn't take it any further than that. I'm just going to go with kicking it when it doesn't work until that option is expired or I get some time to check it out. I know it sounds dumb but if you do everything that I did and don't have any luck then you have to start trying to find ground connection which seems to be a big secret by the lack of availability of any clear schematics that are usable from the factory. Most people will tell you not to pull all the fuses or relays I pulled while it's running. But really there's not much chance you're going to fry something like you can if you disconnect some of the sensors withthe battery connected. Fuses and breakers after all are the place where these systems are designed to be disconnected. Also keep in mind most if not all of the switches are downstream of the powered component. Which means the switches connect the circuit to ground. Rather than controlling the flow of power to the component as was the norm on older vehicles. Hope this helps you out or someone. I wasn't able to find anything other than posts all relating to the headlight switch contact cleaning solution everywhere I looked. And some schematics that were nearly useless.

Posted on Nov 04, 2013

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SOURCE: Radio is on, but no sound. 2003 Olds Silhouette.

I had avery similar problem with my radio. At first I would lose audio but it would eventually come back. Then I lost it for good. I replace the radio and that work for a bit and then replaced the speakers and they worked for a bit. Eventually no audio. I took the radio and speakers back to the tech who installed them and he found a short in the speaker wiring to the passenger speakers. He installed a jumper around the short and the new radio and speakers worked fine. Then I had him put in the original raidio and speakers and have had audio ever since.

Doug Crail
dscrail@yahoo.com

Posted on Jun 28, 2009

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Interior Lighting System Description
Vehicles with the optional remote keyless entry (RKE) system have interior lighting controlled by the body control module (BCM).
This vehicle uses a delayed interior lighting system.
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• The dome lamps will illuminate when any door is opened.
• The dome lamps will remain on for 20 seconds after the last door is closed.
• The delay is canceled and the dome lamps will go out when the ignition switch is turned to the ON position.
• The illuminated entry function will not operate when the dome lamp defeat switch is in the OFF position.
• The interior lighting system is protected from battery rundown by the retained accessory power (RAP) system. The RAP system functions by shutting down interior lights after 10 minutes (when ignition is OFF).

Interior Lights Circuit Description
When the interior lamps circuits are closed/enabled, the courtesy lamp relay is activated by the two following coil circuits:
• CKT 690 (GRY/BLK) which is the courtesy lamp enable output of the body control module (BCM) driving the coil side of the relay.
• CKT 1732 (ORN) which is the coil output side of the relay going to the potential grounding switches/sources.
When the courtesy lamp relay is enabled, CKT 156 (WHT) (courtesy lamp output) is enabled by the closed contact at the relay and then grounded by CKT 750 (BLK) at G110.
Some of these circuits can also be activated with the headlamp and panel dimmer switch. When this happens, the coil output side of the inadvertent power relay is grounded to the body control module (BCM) via CKT 1393 (DK BLU)
CKT 40 (ORN) from the courtesy fuse drives both input sides of the inadvertent power relay. When the contact is pulled closed, CKT 1732 (ORN) is supplied power, thus driving any lamps/circuits attached that circuit and providing ground.
The body control module (BCM) also monitors the following four door inputs:
• CKT 49 (DK BLU) -- LH door jamb switch input
• CKT 54 (ORN) -- RH door jamb switch input
• CKT 775 (PNK) -- Side door jamb switch input
• CKT 656 (YEL) -- Rear door jamb switch input/liftgate strut switch input (depending on option content)
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The headlamp and panel dimmer switch also activates the following interior courtesy lamps when the switch is placed in the PARK or HEADLAMP ON positions:
• RF power window switch
• RH power door lock switch
• LH power window switch
• LH power door lock switch
• LH outside rearview mirror control switch
• Rear radio control head
The dome lamps can be disabled by closing the dome lamp defeat switch located on the headlamp and panel dimmer switch.

--------------------------------------------------------------------------------
Courtesy or Dome Lamps Inoperative
Step
Action
Value(s)
Yes
No
Important: Verify functional bulbs before beginning diagnostic procedure.
1
Did you perform the Lighting Diagnostic System Check?
--
YES - Go to Step 2
NO - Go to Diagnostic System Check - Lighting Systems
2
Are all of the courtesy/dome lamps inoperative?
--
YES - Go to Step 6
NO - Go to Step 3
3
Activate courtesy/dome lamps
With DMM, check for battery voltage from inoperative lamp CKT 1732 (ORN) to ground
Is battery voltage present?
B+
YES - Go to Step 4
NO - Go to Step 5
4
Repair open in CKT 156 (WHT) between inoperative lamp assemply and S214.
Is the repair complete?
--
NO - Go to Step 10
--
5
Repair open in CKT 1732 (ORN) between inoperative lamp assemply and one of the following splices:
• S258
• S301
Is the repair complete?
--
Go to Step 10
--
6
Turn the courtesy lamp switch to the ON position
Check for battery voltage at BCM C2 cavity B12.
Is battery voltage present?
B+
Go to Step 7
Go to Diagnostic System Check - Body Control System in Body Control Systems
7
Verify continuity of the following three circuits with DMM:
• CKT 1732 (ORN) between courtesy lamp relay and body control module
• CKT 156 (WHT) between courtesy lamp relay and S214
• CKT 750 (BLK) between courtesy lamp relay and S206
Are all of the circuits functional?
--
Go to Step 8
Go to Step 9
8
Replace courtesy lamp relay.
Is repair complete?
--
Go to Step 10
--
9
Repair the inoperative circuit.
Is the repair complete?
--
Go to Step 10
--
10
Operate the system in order to verify the repair.
Did you correct the condition?
--
System OK
Go to Step 2

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