No power to dome light - checked all fuses, all good... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BPN · 10-25-2021, 06:42 AM

Hi all!

I'm new to these forums, mainly because I am in fact a new Camaro owner.
Just last week I bought a black 2010 Camaro 2SS/RS, a very very rare sight here in the Netherlands. I'm extremely impressed with the performance, looks, handling and features of this car, which makes a lot of sense having formerly driven a third gen Firebird as my "fun car"

Now there is an issue with this car that I am having some trouble solving. My dome light doesn't work in any setting, not on the doors and not when turning it on manually. The door switch, at least in the driver's side door, does work, as the radio turns off after removing the key and then opening the door (until the door is opened, it keeps playing). The dome light switch itself is also fine, I checked it for making proper contnuity between the contacts and it does.

I've checked the bulb, which was fine. I even placed a new bulb anyway, with no result. I've checked fuse 33 under the hood and all BCM related fuses in the dash. All fuses are fine. Nevertheless, I swapped fuse 33 under the hood out for a new one just to make sure, as others have solved this identical problem by replacing that fuse. Alas, no luck for me. Also, my dimmer switch works fine and is definitely not turned all the way down.

The grey wire in the connector to the dome light does not, under any circumstances, receive 12 V, which it should according to the electrical schematics in my Haynes manual. I suppose this means that the BCM isn't sending the 12 V. The question is... why not?

On a side note, my rear right side marker light is out (to be replaced) and the ambient light strip in the passenger door isn't working (haven't taken the door panel off to see what's going on there yet). I figured I'd provide these bits of info in case they could be related.

Things I've already found/read/tried so far:

https://www.camaro5.com/forums/showthread.php?t=71003

https://www.camaro5.com/forums/showthread.php?t=209954

https://ls1tech.com/how-tos/a/chevro...-on-off-419767

Hope someone can help with this! And in case I do solve it, I'll make sure to post here on just how I managed...

xstuntman · 10-26-2021, 12:40 PM

You used a test light to see if the fuse was actually getting power in the block?

BPN · 10-28-2021, 01:53 AM

Quote:

Originally Posted by xstuntman

You used a test light to see if the fuse was actually getting power in the block?

No, I may try that, at least on underhood fuse 33. Although I think that more features controlled by the BCM would've stopped working if there was actually no power coming to the fuse and that doesn't seem to be the case...

0stones0 · 10-28-2021, 07:03 AM

Possible dimmer switch issue?

BPN · 10-31-2021, 04:24 PM

Quote:

Originally Posted by 0stones0

Possible dimmer switch issue?

Nope, it works fine on all the other ambient lighting.

BPN · 11-03-2021, 12:56 PM

Quote:

Originally Posted by xstuntman

You used a test light to see if the fuse was actually getting power in the block?

So I've tried this today. Fuse 33 underhood does get 12V and passes it on. No issue there.

Any other suggestions? It boggles my mind that all other BCM controlled functions do seem to work just fine, it's just the dome light that doesn't...

xstuntman · 11-03-2021, 02:19 PM

Could be a broken wire or bad connection. I would pull the fuse out to kill power and then check the wire for continuity.

1JEWLDSSRS · 11-03-2021, 02:56 PM

Just a thought, there is a button on the fixture to turn it off, you didn't by chance accedently turn it off did ya?? Done that wiping down the interior with detail spray and a towel. If not, do you have power AT the connector for the bulb?

BPN · 11-03-2021, 05:03 PM

Quote:

Originally Posted by xstuntman

Could be a broken wire or bad connection. I would pull the fuse out to kill power and then check the wire for continuity.

That would involve finding the BCM (located near the brake pedal if I'm not mistaken), finding out which wire(s) go(es) from it to the dome light and checking them, right? That, plus a fourth wire from the dome light, which goes to ground. It's a solid idea and I've been thinking that would be a next step, as well. Although, truth be told, I don't think the wires will be busted. I'm afraid the BCM just has a very specific weird issue. Still, can't hurt to check and make sure.

Would you by any chance be able to point me in the right direction regarding which wires on the BCM go to the dome light assembly? The Haynes manual schematics don't show that part and based on the colours it could be several...

BPN · 11-03-2021, 05:05 PM

Quote:

Originally Posted by 1JEWLDSSRS

Just a thought, there is a button on the fixture to turn it off, you didn't by chance accedently turn it off did ya?? Done that wiping down the interior with detail spray and a towel. If not, do you have power AT the connector for the bulb?

No, that's not it. I've tried it in all the settings and both in the "door" setting and the "always on" setting of the switch it doesn't work even though it should. I even pulled the assembly out and checked if the switch makes the proper connections on the copper paths. It does.

I do wish it would've been that easy though

I don't have power to the dome light, as I wrote in my original post and the title. I checked the grey wire for 12 V and it doesn't get it under any circumstance.

1JEWLDSSRS · 11-04-2021, 09:14 AM

Quote:

Originally Posted by BPN

No, that's not it. I've tried it in all the settings and both in the "door" setting and the "always on" setting of the switch it doesn't work even though it should. I even pulled the assembly out and checked if the switch makes the proper connections on the copper paths. It does.

I do wish it would've been that easy though

I don't have power to the dome light, as I wrote in my original post and the title. I checked the grey wire for 12 V and it doesn't get it under any circumstance.

Wow man that just bites.. Good luck and hope you can find the problem and fix it.

BPN · 11-04-2021, 05:55 PM

It is with great joy that I can report I have fixed the issue!!

The problem ended up being simple. Right by the BCM connector X7, the grey wire that feeds 12V to the dome light had broken somehow. It wasn't difficult at all to identify the wire, because it was the only broken one and had the right colour... I repaired it (which was tricky, lying upside down on the driver's seat with my head hovering above the pedals) and now my dome light works as it should. I'm very happy!

Thank you all for your support!

0stones0 · 11-04-2021, 06:27 PM

Glad you got it sorted.

1JEWLDSSRS · 11-04-2021, 07:22 PM

Very awesome sir!! Well done...

10-25-2021, 06:42 AM	#1
BPN Drives: 2010 Camaro 2SS/RS Join Date: Oct 2021 Location: Netherlands Posts: 38	No power to dome light - checked all fuses, all good... Hi all! I'm new to these forums, mainly because I am in fact a new Camaro owner. Just last week I bought a black 2010 Camaro 2SS/RS, a very very rare sight here in the Netherlands. I'm extremely impressed with the performance, looks, handling and features of this car, which makes a lot of sense having formerly driven a third gen Firebird as my "fun car" Now there is an issue with this car that I am having some trouble solving. My dome light doesn't work in any setting, not on the doors and not when turning it on manually. The door switch, at least in the driver's side door, does work, as the radio turns off after removing the key and then opening the door (until the door is opened, it keeps playing). The dome light switch itself is also fine, I checked it for making proper contnuity between the contacts and it does. I've checked the bulb, which was fine. I even placed a new bulb anyway, with no result. I've checked fuse 33 under the hood and all BCM related fuses in the dash. All fuses are fine. Nevertheless, I swapped fuse 33 under the hood out for a new one just to make sure, as others have solved this identical problem by replacing that fuse. Alas, no luck for me. Also, my dimmer switch works fine and is definitely not turned all the way down. The grey wire in the connector to the dome light does not, under any circumstances, receive 12 V, which it should according to the electrical schematics in my Haynes manual. I suppose this means that the BCM isn't sending the 12 V. The question is... why not? On a side note, my rear right side marker light is out (to be replaced) and the ambient light strip in the passenger door isn't working (haven't taken the door panel off to see what's going on there yet). I figured I'd provide these bits of info in case they could be related. Things I've already found/read/tried so far: https://www.camaro5.com/forums/showthread.php?t=71003 https://www.camaro5.com/forums/showthread.php?t=209954 https://ls1tech.com/how-tos/a/chevro...-on-off-419767 Hope someone can help with this! And in case I do solve it, I'll make sure to post here on just how I managed...

10-26-2021, 12:40 PM	#2
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,368	You used a test light to see if the fuse was actually getting power in the block? __________________ '18 SS wheels, colored matched Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, victory red rotors and calipers, 1/4 window American flags, splash guards, AEM dry panel air filter, Hot Wheels steering wheel and seat covers, Hot Wheels exterior emblems.

10-28-2021, 07:03 AM	#4
0stones0 It don’t come easy. Drives: 2010 2SS RS M6 Join Date: May 2014 Location: WI Posts: 2,592 View My Garage	Possible dimmer switch issue? __________________

11-03-2021, 02:19 PM	#7
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,368	Could be a broken wire or bad connection. I would pull the fuse out to kill power and then check the wire for continuity. __________________ '18 SS wheels, colored matched Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, victory red rotors and calipers, 1/4 window American flags, splash guards, AEM dry panel air filter, Hot Wheels steering wheel and seat covers, Hot Wheels exterior emblems.

11-03-2021, 02:56 PM	#8
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 14,053	Just a thought, there is a button on the fixture to turn it off, you didn't by chance accedently turn it off did ya?? Done that wiping down the interior with detail spray and a towel. If not, do you have power AT the connector for the bulb? __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

11-04-2021, 05:55 PM	#12
BPN Drives: 2010 Camaro 2SS/RS Join Date: Oct 2021 Location: Netherlands Posts: 38	It is with great joy that I can report I have fixed the issue!! The problem ended up being simple. Right by the BCM connector X7, the grey wire that feeds 12V to the dome light had broken somehow. It wasn't difficult at all to identify the wire, because it was the only broken one and had the right colour... I repaired it (which was tricky, lying upside down on the driver's seat with my head hovering above the pedals) and now my dome light works as it should. I'm very happy! Thank you all for your support!

11-04-2021, 06:27 PM	#13
0stones0 It don’t come easy. Drives: 2010 2SS RS M6 Join Date: May 2014 Location: WI Posts: 2,592 View My Garage	Glad you got it sorted. __________________

11-04-2021, 07:22 PM	#14
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 14,053	Very awesome sir!! Well done... __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.