Capri L4-1597cc 16L DOHC Turbo (1991) - Brake Light Switch - TSB Page 6188
Brake Light Switch: Description and Operation
Typical Brake Pedal Position Switch
The Brake On-Off (BOO) switch is mounted at the brake pedal assembly. Closing of the switch contacts when the brakes are APPLIED, signals the
Engine Control Assembly (ECA) to modify the operation of the torque converter clutch (if equipped), A/C compressor (if equipped), and idle speed and
air/fuel ratio during periods of decel and idle.