Contents: Brake lights ⬇ Low fluid level warning light ⬇ Handbrake activation warning light…⬇ Anti-lock braking system ABS warning…⬇ Control unit warning signals ⬇
Brake lights
The brake light circuit is controlled by a plunger type switch mounted on the brake pedal bracket.
If you suspect that a switch has failed, you should first check it by disconnecting its wires and connecting it to a universal measuring device (set to the required resistance) or to the battery-bulb test circuit, parallel to 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 circuit is activated by a float type sensor which is attached to the brake fluid reservoir cap.
If you suspect that the sensor is faulty, unscrew the tank cap and connect the test device to the sensor terminals located on the cap. The sensor only shows current in the circuit if the float is at the lowest point of its travel. If the sensor is faulty, the entire sensor/tank cap assembly must be replaced.
Handbrake activation warning light ("ON")
The warning light is activated by a plunger-type switch mounted on the base of the handbrake lever.
The indicator lamp must light up in any case if the handbrake is applied and go out if the handbrake is released.
If the switch is suspected of being defective, remove it as above and connect the test device. When the plunger is fully extended, the switch will conduct current. If the switch is defective, it must be replaced.
Anti-lock braking system ABS warning light
The ABS warning light comes on when the ignition is first turned on and goes out after a few seconds. If the warning light does not go out or comes on while driving, this indicates a malfunction. It is still safe to drive the car (the normal braking system still works), however, as soon as possible, you should contact a car repair shop to check this system on special equipment.
Control unit warning signals
On models equipped with the control check system, warnings are sent to indicate wear of the front disc linings, or failure of the brake light bulb. Details of this system are given in chapter 12.
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