Quote:
Originally Posted by Kaotic Lazagna
That would start getting beyond my knowledge.
|
It's not that bad. Instead of the dome light being connected through the door switch, a 5 volt logic signal exists on the wire. When the door is open, the switch closes and pulls the signal to ground. The BCU senses that change and triggers all the appropriate conditions like dome light, key and/or headlight warning, blah blah blah...
If there's an internal issue keeping that signal low, the result is the same. It's a long shot, though. More likely the wiring.