Dash lights on when brake applied
#1
Dash lights on when brake applied
I was working on a friends 93 4runner 3.0 MT today. Her problem is that the instrument panel lights up when the brake is applied. It does it when the ignition is on or off. When the ignition is off the buzzer that reminds you the lights are on also makes its sound when the brake is depressed. I pulled the instrument panel out today and didn't see any obvious bare wires or shorts. The fuses have not blown which I interpret as the short is not to the ground. This also started out of the blue so there wasn't anything done to cause a change in the circuitry.
I looked over the wiring diagrams and the only place I can see the circuits could communicate is either in the wiring harness under the dash or possibly at the integration relay. Does anyone have any advice on how to test the integration relay to see if that could be malfunctioning? Any other suggestions on where to start???
Thanks,
KG
I looked over the wiring diagrams and the only place I can see the circuits could communicate is either in the wiring harness under the dash or possibly at the integration relay. Does anyone have any advice on how to test the integration relay to see if that could be malfunctioning? Any other suggestions on where to start???
Thanks,
KG
#4
try checking the brake light bulbs and sockets. Could be a short there. I had a car that someone put a 1156 instead of an 1157 and everytime you hit the brakes the dome light came on, the power backfed throught the system. Maybe the brake light socket is corroded and shorting out.
#5
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try checking the brake light bulbs and sockets. Could be a short there. I had a car that someone put a 1156 instead of an 1157 and everytime you hit the brakes the dome light came on, the power backfed throught the system. Maybe the brake light socket is corroded and shorting out.
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