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Brake-light switch: Notes

When the brake pedal is depressed, current is fed via the brake-light switch to pin 14 on the control module.

Information on the status of the brake-light switch (ON/OFF) is used by the electronic brake-force distribution function (EBD) during pump-motor testing and ABS modulation.

Each time the brake pedal is depressed, i.e. the control module receives current from the brake-light switch, ABS control reverts to the default mode.

Fig 1: Brake-Light Switch Communication Diagram
G03744569Courtesy of SAAB-SCANIA OF AMERICA, INC.
Fig 2: Circuit Diagram - Brake-Light Switch
G03744570Courtesy of SAAB-SCANIA OF AMERICA, INC.