C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Interior Lights

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Old Dec 16, 2016 | 12:51 PM
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Default Interior Lights

'94 Coupe:

My interior lights take about 20 minutes to go off. Running or not. Key in or out. It doesn't matter. When I open the door and they come on it's 15 to 20 minutes before they go off.

FSM has a trouble shooting chart for the lights not going off at all.

Any ideas?
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Old Dec 16, 2016 | 07:37 PM
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I'd start with the door switches. I assume there is a max time the lights can be on and if the switch is bad, it may think the door was open continuously.

Just a guess on my part, but only thing I can think of at the moment.
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Old Dec 16, 2016 | 08:08 PM
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Thanks for the response.

I have been thinking about that but I'm trying not to spend a hundred bucks on a pair of door switches.

The "Door Ajar" light only comes on when a door is open.
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Old Dec 16, 2016 | 08:19 PM
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OP - this thread should be a good read for you. I didn't do anything other than just "skim" it but I was going to head you towards CCM diagnostics for starters. Since you've the correct FSM a quick read of the CCM diagnostics and operation you should be all set.

https://www.corvetteforum.com/forums...lay-timer.html
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Old Dec 16, 2016 | 08:36 PM
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WVZR-1, how do you know all this stuff? I have enough trouble keeping up with daylight saving time.
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Old Dec 16, 2016 | 08:57 PM
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Originally Posted by WVZR-1
OP - this thread should be a good read for you. I didn't do anything other than just "skim" it but I was going to head you towards CCM diagnostics for starters. Since you've the correct FSM a quick read of the CCM diagnostics and operation you should be all set.

https://www.corvetteforum.com/forums...lay-timer.html
Thanks, this is making some sense now. The light problem started after I got my car back from the body shop after an idiot ran into my passenger side door.

Now I know where to start. I'll bet it's the door lock switch.
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Old Dec 17, 2016 | 04:57 PM
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It is the RH key switch. When I connect a meter to it it shows closed no matter which way I turn the key. If I disconnect the switch every acts normal when opening and closing the LH door. (delayed a bit) When I close the RH door the lights go off immediately. That's a don't care to me.
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