F 250 2WD Pickup V8-7.3L DSL Turbo VIN F (1994)
Brake On/Off Switch - BOO: Description and Operation
Brake On/Off (BOO) Switch
DESCRIPTION
The Brake On/0ff switch tells the powertrain control module when the brakes are applied. The switch is closed when the brakes are applied and
open when they are released.
FUNCTION
Disengages torque converter clutch when brake is applied.
RELATED SYMPTOMS
Failed on or not connected - Torque converter clutch will not engage at less than 1/3 throttle.
Failed off - Torque converter clutch will not disengage when brake is applied.