Interior Lights stay on - ZR-1 Net Registry Forums

jerrydirks · 02-01-2008

Help, I have the manuals for my 92. The interior lights stay on until the buss times out in 15 minutes. I have checked codes, used ccm diagnostics, all OK.

I need to locate the ccm, but the manuals are not clear on the location. where is grey plug?

I am stumped. Even checked the main ground on the bell housing.

Any ideas are appreciated.

If you are a c4 elect person I need your help.

Thank you!!

Jerry
1992 ZR1, DRM 600

-=Jeff=- · 02-01-2008

I assume you did all the steps in the Service manual?

CCM is behind the radio controller, Access panel is on the driverside console panel

tf95ZR1 · 02-01-2008

Woa! Codes, CCM?
KISS (keep it simple s...) No offense intended at all, but
my guess is any of the three light switches isn't making proper
contact. One on driver door, one on passenger door, one on
the rear hatch. Plunger type, and they wear. Try opening one
door/hatch at a time and push the plunger in and see if lights go out.
Then shut the door/hatch and again see if they go out.
Someone (OK, me) has been known to put black electric tape
that matches interior color on the nub that the switch plunger contacts
so that the plunger goes in further and shuts off the lights.
I have also heard of others removing the switches and cleaning
the contacts. You could even buy new switches.
And again, not to insult, but is the lights dimmer lever off?
Good Luck,
Been there, Done that Ted

Hey Jerry,
I just re-read your post and you said you followed the manual.
I don't know what it says, so if you already checked these things again I apologise.

Nick · 02-01-2008

Quote:

Originally Posted by tf95ZR1

my guess is any of the three light switches isn't making proper contact.

This happened to my '94 Z. Bought new door switches from GM Parts Direct, installed them per the "trick" in the factory service manual (no door panel removal necessary), and all is well.

ZR 601 · 02-01-2008

This link may help...

http://home.comcast.net/~zrjuan/doorajar.html

jerrydirks · 02-21-2008

Thanks...I had a combination of an aftermarket security system and two interminent door switches that were making diag difficult. In the end I removed the sec sys and replaced both door switches, now all is well. Thanks for the input!!!

Jerry

phrogs · 02-21-2008

I was going to say check the door switches they get stuck sometimes

WydGlydJim · 02-21-2008

When I got my Z it had a little felt piece on the striker of the rear hatch. I was like what is this? Took it off, and the lights stayed on. I guess that was easier for the previous owner, than adjusting the switch.

-=Jeff=- · 02-21-2008

Quote:

Originally Posted by WydGlydJim

When I got my Z it had a little felt piece on the striker of the rear hatch. I was like what is this? Took it off, and the lights stayed on. I guess that was easier for the previous owner, than adjusting the switch.

or he may not have know HOW to adjust the switch.. I also found the switch bracket on my 89 for the hatch was bent

careful with the Dorr ajar switches too, they come apart rather easy

02-01-2008	#1
jerrydirks Join Date: Nov 2007 Location: Saint Michael MN Posts: 19	Interior Lights stay on Help, I have the manuals for my 92. The interior lights stay on until the buss times out in 15 minutes. I have checked codes, used ccm diagnostics, all OK. I need to locate the ccm, but the manuals are not clear on the location. where is grey plug? I am stumped. Even checked the main ground on the bell housing. Any ideas are appreciated. If you are a c4 elect person I need your help. Thank you!! Jerry 1992 ZR1, DRM 600

02-01-2008	#2
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Interior Lights stay on I assume you did all the steps in the Service manual? CCM is behind the radio controller, Access panel is on the driverside console panel __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

02-01-2008	#3
tf95ZR1 Join Date: Aug 2005 Location: Northridge, CA Posts: 1,461	Re: Interior Lights stay on Woa! Codes, CCM? KISS (keep it simple s...) No offense intended at all, but my guess is any of the three light switches isn't making proper contact. One on driver door, one on passenger door, one on the rear hatch. Plunger type, and they wear. Try opening one door/hatch at a time and push the plunger in and see if lights go out. Then shut the door/hatch and again see if they go out. Someone (OK, me) has been known to put black electric tape that matches interior color on the nub that the switch plunger contacts so that the plunger goes in further and shuts off the lights. I have also heard of others removing the switches and cleaning the contacts. You could even buy new switches. And again, not to insult, but is the lights dimmer lever off? Good Luck, Been there, Done that Ted Hey Jerry, I just re-read your post and you said you followed the manual. I don't know what it says, so if you already checked these things again I apologise. Last edited by tf95ZR1; 02-01-2008 at 08:58 PM.

02-01-2008	#5
ZR 601 Join Date: Jun 2007 Location: Colorado Springs, CO Posts: 22	Re: Interior Lights stay on This link may help... http://home.comcast.net/~zrjuan/doorajar.html

02-21-2008	#6
jerrydirks Join Date: Nov 2007 Location: Saint Michael MN Posts: 19	Re: Interior Lights stay on Thanks...I had a combination of an aftermarket security system and two interminent door switches that were making diag difficult. In the end I removed the sec sys and replaced both door switches, now all is well. Thanks for the input!!! Jerry

02-21-2008	#7
phrogs Join Date: Jul 2004 Location: Kalamazoo MI Posts: 1,753	Re: Interior Lights stay on I was going to say check the door switches they get stuck sometimes __________________ JOHNNY P Currently own 90 ZR-1 #845 DRM 500 engine package 90 #226 Parts car Hit me up if you need anything.

02-21-2008	#8
WydGlydJim Join Date: Jan 2008 Location: Wichita, Ks. Posts: 319	Re: Interior Lights stay on When I got my Z it had a little felt piece on the striker of the rear hatch. I was like what is this? Took it off, and the lights stayed on. I guess that was easier for the previous owner, than adjusting the switch. __________________ 2009 LS9 1990 LT-5/sold/Bought my Baby back 1994 Lingenfelter LT-5/sold 1973 LS4/sold