parking lights wont turn off

[JusteR]

Pickles-

Weather it's fixed or not, let us know how it goes...

I've heard of GM fuse box problems before-- not sure if this one is closer to Daewoo or GM design. Perhaps a google search of "bussed electrical center" will help. I haven't looked at a wiring diagram or description of operation yet. Some of these so-called fuse boxes can be dissembled and repaired and even contain relays soldered directly to the board. Either way, I'd be asking moself who controls the ground. Or, it could be a backfeed thru a different circuit.

I hope my tendency to overthink things has helped and not harmed.

[JusteR]

ok, I just looked at a wiring diagram for everything after the park lamp relay and nobody controls ground. do you know if yours has RPO code WHB? I don't know yet who controls the park lamp relay. have you checked if the relay has both powers and if its being grounded according to what the lamp control module wants or multifinction switch is putting out?

ugh... and then theres power moding...

looking forward to learning a lot on this one. HTHY!

[JusteR]

I Just reread the OP, I understand you have power at 2 underhood parking light fuses even with the "parklp" relay unplugged. I will do some digging and see if there is another power to those fuses coming in externally to the underhood fuse box.
In the event I don't come through for you, here are some other resources:

GM Service Info (20 coconuts for 3 days) https://www.acdelcotds.com/acdelco/action/subscribehome
Alldata DIY (27 cocos for 1 year/1 veh) ALLDATAdiy.com :: Buy Your Subscription Today

HTHY...

[JusteR]

Okay, my theory of something being shorted to a ground inside your fuse box is starting to look more and more viable.

Or short to power inside the fuse box between relay and fuses. or bad relay inside fuse box (cobalt has them)

can you physically feel the park lamp relay clicking?

etc... etc...

GM Service Info (20 coconuts for 3 days) https://www.acdelcotds.com/acdelco/action/subscribehome

Alldata will probably be of no help on something this new.

[Pickles]

Pickles-

Weather it's fixed or not, let us know how it goes...

I've heard of GM fuse box problems before-- not sure if this one is closer to Daewoo or GM design. Perhaps a google search of "bussed electrical center" will help. I haven't looked at a wiring diagram or description of operation yet. Some of these so-called fuse boxes can be dissembled and repaired and even contain relays soldered directly to the board. Either way, I'd be asking moself who controls the ground. Or, it could be a backfeed thru a different circuit.

I hope my tendency to overthink things has helped and not harmed.

If it was backfeed, than pulling the fuse *shouldnt* turn the lights off. I dont want to risk messing with the box when they are $70 online.

ok, I just looked at a wiring diagram for everything after the park lamp relay and nobody controls ground. do you know if yours has RPO code WHB? I don't know yet who controls the park lamp relay. have you checked if the relay has both powers and if its being grounded according to what the lamp control module wants or multifinction switch is putting out?

ugh... and then theres power moding...

looking forward to learning a lot on this one. HTHY!

RPO code? I dont know what that is. Yes relay has appropriate power and ground.

Or short to power inside the fuse box between relay and fuses. or bad relay inside fuse box (cobalt has them)

can you physically feel the park lamp relay clicking?

etc... etc...

GM Service Info (20 coconuts for 3 days) https://www.acdelcotds.com/acdelco/action/subscribehome

Alldata will probably be of no help on something this new.

Yes, i can feel relay clicking. My Best guess is what 2010 aveo also suggested about the power being shorted to ground in the box

[JusteR]

If it was backfeed, than pulling the fuse *shouldnt* turn the lights off. I dont want to risk messing with the box when they are $70 online.

It is my belief that there is a backfeed/short to power before the fuse, but after the relay. I unfortunately don't know what a new fuse box costs

RPO code? I dont know what that is. Yes relay has appropriate power and ground.

Regular Production Option. Upon doing further research, I don't think it matters in this case.

Are power and ground ok at both the load side and the control side of the relay? If it were mine, I would check to see if there's power (or ground) where there shouldn't be with the relay unplugged and the fuse unplugged.

Yes, i can feel relay clicking. My Best guess is what 2010 aveo also suggested about the power being shorted to ground in the box

I'm inclined to disagree with 2010 Aveo, but, I've been wrong before . Either way, checking the sockets with both the fuse and relay pulled should give you what you need to know. My Xray vision is a bit foggy today . I wish had a known good 2010 around with matching RPO list.

This seems crazy to me, but I've heard of 1 or 2 instances of Cobalts with chafed wiring behind the radio causing a similar issue. HTHY

[2010AveoLT]

It is my belief that there is a backfeed/short to power before the fuse, but after the relay. I unfortunately don't know what a new fuse box costs



Regular Production Option. Upon doing further research, I don't think it matters in this case.

Are power and ground ok at both the load side and the control side of the relay? If it were mine, I would check to see if there's power (or ground) where there shouldn't be with the relay unplugged and the fuse unplugged.



I'm inclined to disagree with 2010 Aveo, but, I've been wrong before . Either way, checking the sockets with both the fuse and relay pulled should give you what you need to know. My Xray vision is a bit foggy today . I wish had a known good 2010 around with matching RPO list.

This seems crazy to me, but I've heard of 1 or 2 instances of Cobalts with chafed wiring behind the radio causing a similar issue. HTHY

you DO have a point; there could be chafed, pinched, or pierced wires in between the fuse box and the lights, and it WOULD pretty much eliminate the park lamp relay from the circuit. because all the relay is is a switch with a remote trigger.

[JusteR]

you DO have a point; there could be chafed, pinched, or pierced wires in between the fuse box and the lights, and it WOULD pretty much eliminate the park lamp relay from the circuit. because all the relay is is a switch with a remote trigger.

Or all those possibilities within the fuse box itself. I haven't had one apart yet from an aveo...

Don't these have a device to turn the lights off if you leave the switch on and turn the key off and take it out? If so, could this device also fail and leave the lights on?

Pickles, do the lights change intensity at all when you turn the key off or off and out? are they always bright/dim?

This could get interesting, but I am out of town this weekend HTHY.

[Pickles]

Thanks for the help. And no, intensity doesnt change. And that module isnt a possiblity because that shuts the park lights off if the switch is set to on and the car is off. But even when the switch is turned off they are on.

[2010AveoLT]

Or all those possibilities within the fuse box itself. I haven't had one apart yet from an aveo...

Don't these have a device to turn the lights off if you leave the switch on and turn the key off and take it out? If so, could this device also fail and leave the lights on?

Pickles, do the lights change intensity at all when you turn the key off or off and out? are they always bright/dim?

This could get interesting, but I am out of town this weekend HTHY.

I looked at my fuse box when I was washing and inspecting Scoots this afternoon, and through several small slots cut into the top (these cuts were made by the factory, when the top of the fuse box was molded) surrounding the fuses and relays, I caught the green tinge of circuit board. oh, and the battery saver is only when the light switch is on, and the key is taken out of the ignition. that battery saver has saved my butt COUNTLESS times, because when I first got Scoots, I was still going to school in Nashville leaving the house at 6:40 in the morning, and I would sometimes forget to switch off my lights when I got to school. (of course, the headlights only work when the ignition is turned on, but the parking lights still work)