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Greg Camenzuli Posted on Aug 21, 2019

Hi there i have a gsl12 brake controller . my question is should i be getting 2.8 volts on the blue wire when the brake pedal is NOT depressed. the voltage does rise when adjuster is moved

5 Related Answers

Anonymous

  • 5 Answers
  • Posted on Feb 12, 2009

SOURCE: Left turn signal stops flashing when brake pedal is depressed.

there is a ground problem, most likely in the tail unit itself, but a ground problem is hard to find and easy to fix. reground the system, the turning unit, and the problem should stop. About the hazards, I don't know...... some times in older cars, that is the way it works. because the brake and hazard element in the bulb is the same and the old cars used a break in the power, but the new cars use a break in the ground. any way, chase the ground down first, it is usually the cause.

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Marc Buck

  • 36 Answers
  • Posted on Apr 17, 2009

SOURCE: brake hissing noise

Sounds like it could well be the brake servo unit.

Anonymous

  • 521 Answers
  • Posted on Jul 19, 2009

SOURCE: gear shift won't move out of park

safety switch on brake pedal. common cause is a wire breaking off. there are 1 to 2 wires going to this switch. It is located on the brake pedal bracket above the foot pad.

george parkes

  • 980 Answers
  • Posted on Jul 01, 2010

SOURCE: brake pedal goes to floor on first depression; then pumps up fine

Try this,apply the emergency before stepping on the brake.
If this helps the pedal,the rear brakes are out of adjustment.

Anonymous

  • 2 Answers
  • Posted on Apr 22, 2011

SOURCE: When I start engine and

2002 chevy trailblazer on neutral mode, trailblazer can be pushed easily,but shifter is stuck on park. vehicle will start.the push button on shifter will not engage

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0helpful
2answers

2007 silverado 1500 brake lights dont work, bulbs are fine, power from the brake switch wire blue /white trace illuminates when the pedal is depressed

Check the bulb ground connection. Power may be reaching the bulbs but you need a ground to complete the circuit.
0helpful
2answers

Brake light stop working

I can't imagine three brake lights all losing their grounds. You will need a volt meter to check (with the help of an assistant) to see if about 12 volts is available at the bulb socket's brake light socket (as measured to ground) when the brake pedal is depressed and held. Do the same for the other light and finally the third brake light. If there is a total loss of power at all the bulb sockets with the brake pedal depressed and held, check for about 12 volts coming to the brake pedal switch while not being depressed and that voltage comes out the other connection at the switch when the brake pedal is depressed. If power comes in on one wire but doesn't come out the other side when pressing the pedal this means the switch is bad. Replace it with a new one. Ne advised that SOME vehicles brake lights don't come on if the key is off, on most they work at all times even if the key is off.
4helpful
2answers

My brake lights are not working at all. The fuses are not blown

Hi!!
Check the Brake Pedal Position Switch on top of the brake pedal, the Lt Green w/Red stripe wire should always have 12v+, when brake pedal is depressed the Lt Green wire should have 12v+ also, if no power on Lt. Green w/Red wire, check fuse # 2 20A, if no power on Lt. Green wire when pedal depressed, REPLACE Switch, If there is power on both wires when pedal is depressed, check IVD STOP LAMP RELAY on the Aux. Relay Box 1 located at the Left Front of the Engine Compartment.
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.
2helpful
2answers

Would a bad Flasher relay cause the brake lights not to work?

The flasher does not stop the brake lights from working. Check # 18 fuse in fusebox under lower left side of dash. if it's ok, the brake light switch, on the brake pedal arm is next. light green wire with red stripe is hot if fuse 18 is ok. Depress brake pedal, light green with no stripe should have power. if not, replace brake light switch. If light green wire has power with pedal depressed, combination switch under the steering is next. Remove the cover from around the combo switch {under the steering wheel}. depress brake pedal, light green wire should have power. If it does, pedal still depressed, orange with light blue wire & wire with light green & orange should have power. Those 2 wires are brake & rear turn signal wires. { The turn signal switch should be in the middle, not right position or left. while checking for power in the last 2 wires. Good Luck drvolt.
0helpful
1answer

No brake light when depressing the brake pedal

Check Fuse, Check brake light switch which is under the dash at the brake pedal. Has two wires going into it check for 12 volts on both wires when pedal is depressed if not on both then replace switch. Check bulbs, and sockets, and wiring.
3helpful
2answers

No brake lights but fuse is good. Wiring appears okay.

Isnt there a switch on the brake pedal inside under the dash? There should be power going in and out when depressing the brake pedal. If there is a pressure switch, then check it when the brake pedal is up and then depressed. it should have power on one side up, and both when depressed. One thing to keep in mind that I think it goes through the turn signal switch, so if blinkers work, that tells you the wiring is good to the lights, so concentrate on power getting to and out of the turn signal switch.
0helpful
1answer

I am having a brake light problem--all are out. I think the switch is working. With the brake fuse out, I get a 12 volt read across the fuse terminals when the brake pedal is depressed. I think if the...

using a test light, depress brake and see if have 12+ on both wires, when release brake pedal should only have 12+ on one wire, if only have 12+ on one wire then switch is bad.
If you are using a multi-meter, put your negitive on a known ground to test wires
1helpful
1answer

96 Ford Contour - The Classic Rear Brake lights don't work...

no disrespect but....
Check the book and make sure you are using the proper bulbs on all sides. (3957 looks just like 3956 but wont work right)
0helpful
1answer

No brake lights when depressing the brake pedal

This can be caused by a number of things. You just have to eliminate each one.
Light Globe Replace one with a new one if it works replace both.
Fuse Check fuse in fuse panel under bonnet.
Brake pedal switch Unclip wire connector, check with circuit volt light indicator, Ohm meter or other continuity tester.
Wiring from pedal switch to light globe As above (maybe cut squashed or broken wiring)
Hope this helps
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