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New brake light switch needed? (Volvo 240DL sedan) 200 1989

posted by  cclay on  Mon Jan 16 13:19 CST 2006
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Hey everyone,

Both brake tail lights and the high brake light stopped working a few weeks ago. The tail lights work when I switch the car's lights on, but they don't get brighter when the brake pedal is pushed. I checked the fuse (it's fine) and even tried changing it but no luck.

I was looking through the Bentley service manual and tried the continuity test on p. 300-5:

http://www3.telus.net/greenphantom/brake_test.jpg

...but I'm not sure how to interpret the results I got.

Bentley says with the brake pedal depressed there should be 0 ohms. So far so good:

http://www3.telus.net/greenphantom/brake_foot_on_pedal.jpg

However, it also says that when it's in the rest position there should be infinite ohms. My multimeter showed -0.36 Mega ohms (I think):

http://www3.telus.net/greenphantom/brake_rest_position.jpg

So... would this mean there's a short circuit somewhere, or should I replace the brake light switch?

Any tips would be appreciated :)

Chris







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