Old Feb 26, 2018 | 11:35 PM
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onehundred80
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Joined: Apr 2006
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From: Ontario
Default Re: Brake light work only when headlight are off

Originally Posted by pizzaguy
How can we help you if you can't tell us what the symptom is?

You say all is well with lights off. Ok, got that.

NOW:
You turn light on and what happens:

--- The brake lights come on and stay on. (ICM I would think.)
--- The brake lights come on when I step on the brakes, but then won't go back off. (This would make me think there is some odd screw-up that is "latching" the brake light relay, looking at the wiring diagrams [which are incomplete and not totally accurate] the only thing I can come up with is the Antilock Controller module - but I just don't see how.....)

The CLPSSM is wired to the tail lights thru diodes, don't see how that could be it...
Too many times we have seen symptoms lumped together and then found they were caused by different problems. Another cause of rear light problems has been the use of the wrong bulb in a socket causing problems.
 
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