Travel Sensor

Travel Sensor
The travel sensor gives the Electronic Control Unit (ECU) information on the position of the brake pedal.

When Antilock Brake System (ABS) braking takes place, the ECU activates the pump relay and the pump runs until the travel sensor has gone back one step.

The travel sensor has seven positions, and consists of a number of resistors connected in series which are read by a sliding contact.

This also passes information on hydraulic faults to the ECU.

Position 0 on the travel sensor means that the travel sensor has come away.

The ABS system continues to function but a trouble code is displayed.