Brake light switch

When the brake pedal is depressed, the normally open pair of contacts in the brake light switch will close and B+ will be applied on control module pin 63.

Brake light information is used by the control module to:

• disengage cruise control
• enable engine torque limitation
• enable diagnosis of the speed signal.
  Fig 1: Pedal Switches, Brake And Clutch Circuit Diagram

  Courtesy of SAAB-SCANIA OF AMERICA, INC.