Examination
1. The brake light switch is attached to the foot brake pedal support bracket (refer to illustration Installation height of the foot brake pedal in the released state). To gain access, remove the trim panel under the steering column (see chapter Body).
2. When the pedal is fully released, the sensor-switch is in the open position. Even a weak depressing of the pedal leads to the closing of the sensor-switch and the activation of the brake lights.
3. If the brake lights are malfunctioning, first check the condition of the corresponding fuse (see Onboard electrical equipment) and lamp filaments.
4. If the fuse and lamps are in order, check for power at the sensor-switch.
5. If the power supply to the sensor-switch is broken, check for signs of an open circuit in the circuit between the fuse mounting block and the sensor-switch. If the power supply is correct, close the sensor-switch (depress the foot brake pedal) and check it for output voltage.
6. If there is no output voltage on the sensor-switch, the assembly should be replaced, otherwise check the condition of the wiring in the section of the circuit between the sensor-switch and the brake lights (see Onboard electrical equipment).
Replacement
1. Remove the trim panel installed under the steering column (see chapter Body).
2. Disconnect from the gauge switch of stoplights electroconducting.
3. Give the bottom counternut of the gauge switch.
4. Remove the sensor-switch from the support bracket.
5. Installation is carried out in the reverse order. When finished, adjust the sensor-switch (see Section ABS Sensors and Actuator).