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1992 Volvo 245 Brake Lights Not Working 200

posted by  Art Benstein on  Tue Feb 21 15:32 CST 2023
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

"I have power out of fuse #7..."

If you're measuring that power with a multimeter while the brake pedal is not being depressed, you may be fooled by the sense voltage that appears there from the cruise control. This is voltage with very small current capability, not nearly enough to light a bulb. Best to check this power and trace the circuit with an incandescent test lamp instead of a multimeter. Also, without the load, a cracked fuse element or corroded end can make a meter show power up until you complete the circuit with the brake pedal switch.

If you're sure about the fuse and its contacts, the next usual problem is the bulb failure warning sensor -- broken solder inside. Use your test lamp to see if pushing the pedal switch gets power to the pin 54S (blu/red wire) and out again on the three brake lamp wires, pin 54L (yel/gray), pin 54R (yellow), and pin S (brown/black).
--
Art Benstein near Baltimore






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