Open each door, one at a time, and push in the door switch to see if one of them makes the light go off. If it does, there's a simple fix. You do NOT have to replace the switch; in fact, you can have the same problem with a new switch.
If that doesn't work, double-check that the dome light switch isn't turned on at the head light switch.
Then, if nothing else works, suspect a defective body controller. This is the price we pay for buying cars with a bunch of unnecessary, unreliable, complicated, expensive computers that do what simple switches did for decades.
Caradiodoc
Attached below is the wiring diagram for the interior lights
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Wednesday, June 3rd, 2009 AT 2:04 PM