223001539 - E2021 BRAKE LIGHTS - DESCRIPTION

Description

The brake lights are located at the rear in the side lights and in the central third brake light.All three bulbs are operated whenever the brake pedal is pressed, by means of a switch on the pedal itself. The centre light is operated directly, whilst the two side ones are managed by the body computer.

the switch fitted on the pedal assembly consists of two contacts which supply two signals: the first which is the ''N.A.'' type recognizes the position of the brake pedal when it differs from the rest position; the second, which is the ''N.C.'' type, recognizes the brake pedal in the rest position.

The circuit is supplied with the ignition switched ON and is protected by a fuse, in the junction unit under the facia.A braking signal is also sent from the switch to the ABS, through the vehicle electric control system, which detects braking status and therefore introduces braking control.The same signal is also sent to the engine management system, which takes the braking condition into account when determining the engine control mode.