Brake signals
The brake light circuit is controlled by a plunger-type switch mounted on the brake pedal bracket.
If it is suspected that the switch has failed, it must first be checked by disconnecting its wires and connecting it to a universal measuring device (set to the required resistance) or to a battery-bulb test circuit, in parallel with the switch terminals. The switch passes current if the plunger is not recessed. If the switch is defective, it must be replaced.
Low Fluid Level Warning Light
The warning signal circuit is actuated by a float-type switch that is attached to the brake fluid reservoir cap.
If you suspect that the sensor is out of order, unscrew the tank cap and connect a tester to the sensor terminals located on the cover. The sensor shows the presence of current in the circuit only if the float is at the lowest point of its stroke. If the sensor is defective, the entire sensor/tank cap assembly must be replaced.
Power on warning light ("ON") hand brake
The warning light is activated by a plunger-type switch mounted on the base of the handbrake lever.
The control lamp should light up in any case if the hand brake is applied, and turn off if the hand brake is released.
If the switch is suspected to have failed, remove it as above and connect a tester. When the plunger is fully extended, the switch passes current. If the switch is defective, it must be replaced.
Warning light of the ABS anti-lock system
The ABS warning light comes on when the ignition is switched on for the first time and goes out after a few seconds. If the warning light does not go out or comes on while driving, this indicates a problem. Driving is still safe (the conventional brake system still works), however, as soon as possible, it is necessary to contact a car repair shop to check this system on special equipment.
Control unit warnings
On models equipped with a control check system, incoming warnings indicate wear on the front disc linings, failure of the brake light bulb. Details of this system are given in chapter 12.
Visitor comments