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Relay switch Have a 2000 bravada and my turn signal relay continues to run without turn signal off. It shuts off with the brake pedal pressed

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Bad switch

Posted on Nov 06, 2013


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07 cadillac cts has no brake light all fuses are good and replace the brake switch.still not working any advice


Stop Lamps
The brake pedal position sensor is a resistive device used to sense the action of the driver's application of the brake pedal. The brake pedal position sensor provides an analog signal that will increase as the brake pedal is pressed.
The brake pedal position sensor receives both a 5-volt reference voltage and a low reference signal from the electronic brake control module (EBCM). When the brake pedal is pressed, a variable signal is applied from the brake pedal position sensor to the EBCM through the brake sensor signal circuit. The fuse block left rear supplies battery positive voltage to the bass relay switch through the BASS fuse. One side of the bass relay coil is permanently grounded at G402. The EBCM supplies voltage to the bass relay coil upon receiving the signal from the brake pedal position sensor. The switch contacts of the bass relay close and battery positive voltage is applied through the bass relay switch to the center high mounted stop lamp (CHMSL), and to the turn signal/hazard flasher module through the stop lamp switch signal circuit. The ground for the CHMSL is applied from G402. The turn signal/hazard flasher module then supplies voltage to the left and right stop lamps in the tail lamp assemblies that have ground at G401 and G402. For export vehicles the stop lamps receive battery positive voltage directly from the bass relay.

Do you know where the rear fuse box is ? Check BAS fuse 15amp. and the bas relay , should be marked on the inside of the fuse box lid . The rear fuse box is located

Fuse Block - Left Rear
In the passenger compartment, under the left side of the rear seat at carpet
Power and Grounding Component Views
Electrical Center Identification Views
Fuse Block - Right Rear
In the passenger compartment, under the right side of the rear seat at carpet.

If fuse and relay are ok your best would be to take to a cadillac dealer .

Jan 19, 2017 | Cadillac Cars & Trucks

1 Answer

Where is the stop lamp or brake lamp fuse and panel for a 2007 cadillac cts?


Kevin , this is a very complex way of stoplamp control , I will post GM service Description and Operation of how they work an let you deside if you want to tackle this ! Do the center high mount brake lights work ?
The brake pedal position sensor is a resistive device used to sense the action of the driver's application of the brake pedal. The brake pedal position sensor provides an analog signal that will increase as the brake pedal is pressed.
The brake pedal position sensor receives both a 5-volt reference voltage and a low reference signal from the electronic brake control module (EBCM). When the brake pedal is pressed, a variable signal is applied from the brake pedal position sensor to the EBCM through the brake sensor signal circuit. The fuse block left rear supplies battery positive voltage to the bass relay switch through the BASS fuse. One side of the bass relay coil is permanently grounded at G402. The EBCM supplies voltage to the bass relay coil upon receiving the signal from the brake pedal position sensor. The switch contacts of the bas relay close and battery positive voltage is applied through the bas relay switch to the center high mounted stop lamp (CHMSL), and to the turn signal/hazard flasher module through the stop lamp switch signal circuit. The ground for the CHMSL is applied from G402. The turn signal/hazard flasher module then supplies voltage to the left and right stop lamps in the tail lamp assemblies that have ground at G401 and G402. For export vehicles the stop lamps receive battery positive voltage directly from the bass relay.

There could be a code stored in the EBCM - electronic brake control module - DTC B3903 Stop Lamp Relay Circuit
DTC C0278 Brake Pedal Position Sensor Not Calibrated
there are several other codes that pertane to the brake lights . you could try Replaceing the bas relay !
Fuse Block - Left Rear
In the passenger compartment, under the left side of the rear seat at carpet.

Jun 28, 2015 | 2007 Cadillac CTS 3.6L

1 Answer

Brake lights not working


If you already tried the bulbs, fuses and relays:

There's a switch on your brake pedal arm the controls the brake lights. It may need to be replaced or adjusted.

Apr 16, 2015 | 2000 Nissan Pathfinder

1 Answer

2000 Chevy Cavalier brake lights


Yes, if your turn signals in the back use the same filaments as the brakes, the multi-switch must allow the brake signal through when the turn signals are not activated. There are multiple diagrams for your system, so I'm not sure what you have. If you have the light blue wire that goes from the brake switch ul the column to the turn switch, make sure it is getting power when the pedal is pressed. It should go thru the switch as shown in the second diagram below.

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Jun 30, 2017 | Cars & Trucks

2 Answers

Turn signal relay keeps clicking (same sound as when turn signals are on) even when I am not signalling to turn. I checked, all bulbs/signals work properly. But the sound is annoying. I replaced the relay,...


it may not be that relay. if this happens when the vehicle is idling. look under the dash at the fuse panel. put your finger on each relay. you will feel it if it's the one that is clicking. replay the offending relay.

Jan 30, 2011 | 2000 Oldsmobile Bravada

2 Answers

Wat is a brake switch


An electrical switch located on the upper side of the brake pedal arm. It has voltage going to it, and when you depress the brake pedal, the switch closes and let the voltage go to the brake lights. (These switches are adjustable)

Jan 24, 2011 | 1997 Oldsmobile Bravada

1 Answer

Mustang brake lights dont work


this car has a brake light switch on the pedal check for power in and out. if in and not out change switch. also I believe their is a relay under the hood . then check to see if the multifunction and hazard switch control brake lights i cant remember if they do like gm's but i am also almost sure they do the multifunction is your turn signal wiper arm that goes into steering wheel . after you check the brake switch and relay have some one jiggle the hazard and multi while pressing the brakes see if they come on. you can call ford and ask them about the multi and hazard .

Jun 02, 2009 | 2000 Ford Mustang

2 Answers

Brake lights


brake switch........ or fuse to the switch

Oct 19, 2008 | 2002 Oldsmobile Bravada

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