Brake Pedal Position Sensor — Checking and Replacing (Vesta 2180)

The brake pedal position sensor is mounted in the same housing as the brake light switch.

To complete the work you will need a multimeter.

We check the activation of the brake lights with an assistant.

Sequence of execution

1. Prepare the car for work (see "Preparing the car for maintenance and repair").

Note: To check the brake light switch, turn on the ignition and press the brake pedal by hand to the free travel value(the brake lights should come on). Release the brake pedal (the brake lights should go out). If the brake lights do not light, check the switch and the voltage supply from the battery to the wiring harness connector.

2. Turn the sensor counterclockwise by 90° and remove it from the bracket.



3. Press the lock and disconnect the wiring harness connector from the sensor.



4. To check the sensor, use a thin slotted screwdriver to move the rod lock to the right position.





5. Connect the multimeter in ohmmeter mode to the sensor terminals. Chain 3-4 must be closed (the resistance value is close to zero), chain 1-2 is open (the resistance value should tend to infinity).



6. Press the sensor rod, the circuit 1-2 should open (the resistance value should tend to infinity), and the chain 3-4 will close (the resistance value is close to zero). Otherwise, the sensor must be replaced.

7. Before installation, move the rod lock to the left position. We connect the wiring harness block to the sensor. We install the sensor in the hole of the pedal bracket and turn it clockwise by 90°. The brake pedal should be in the extreme upper position.