Noticed brake light fuse was blown..replaced..still nothing..then replaced brake pedal switch and all tail light bulbs still nothing..
In addition to the pressure switch there's the brake lamp switch and the brake travel switch. If you plug a OBD2/CAN scanner into the car's OBD2 port there may some diagnostic codes logged. The scanner will need to be able to read all codes (not just Pxxxx powertrain codes) since the ABS codes are Cxxxx Chassis codes and Uxxxx Communication codes.I have replaced the brake pedal pressure switch
Thank you for the information I have replaced that part number two but I will try redoing it with those procedures and see if it made a difference I do not have any ABS issues at this momentIn addition to the pressure switch there's the brake lamp switch and the brake travel switch. If you plug a OBD2/CAN scanner into the car's OBD2 port there may some diagnostic codes logged. The scanner will need to be able to read all codes (not just Pxxxx powertrain codes) since the ABS codes are Cxxxx Chassis codes and Uxxxx Communication codes.
Brake Lamp Switch:
The stop lamp switch (#2 in the image below) is located under the instrument panel at the brake pedal arm. This switch contains three internal switches controlling various functions of the vehicle, one of them controls operation of the vehicle’s brake lamps. Other functions of the internal switches include speed control deactivation and brake sense for the ABS and the brake transmission shift interlock.
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There's also an adjustment procedure for the brake/stop lamp switch ...
1. Depress and hold the brake pedal.
2. Remove the stop switch from it’s bracket. To do so, rotate the stop lamp switch in a counterclockwise direction approximately 30 degrees from its proper mounting position. Pull the switch rearward and remove it from it’s mounting bracket.
3. Hold the stop lamp switch firmly in one hand. Using your other hand, pull outward on the plunger of the switch until it has ratcheted out to its fully extended position.
4. Mount the stop lamp switch into the bracket as follows: Depress the brake pedal as far down as possible. Install the switch in it’s bracket by aligning the index key on switch with the notch in the square mounting hole of the mounting bracket. Once the switch is fully seated, rotate the switch clockwise approximately 30° to lock the switch into the bracket.
Caution: Do not use excessive force when pulling back on the brake pedal to adjust the stop lamp switch. If to much force is used, damage to the stop lamp switch or striker can result.
5. Gently pull back on brake pedal until the pedal stops moving. This will cause the switch plunger to ratchet backward to the correct position.
6. Check for proper operation of the brake lamps.
Brake Travel Switch:
The pedal travel sensor (#7 in the image below) is on power brake booster. You can check the condition of the wiring harness/connector. If you're not having any ABS issues the problem may be the brake/stop lamp switch and not the brake travel switch.
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