Check of an alarm lamp of level of brake fluid

1. Include ignition.
2. Release the parking brake.
3. Squeeze out a finger serially down both contacts (1) and (2).
4. The assistant checks whether the alarm lamp lights up respectively. If is not present, then according to the schematic diagram of electric equipment check the electric line.
5. It is impossible to dismantle contact inserts. If necessary replace a tank.