Ranger 4WD V6-4.0L (2009)
Brake Switch (Cruise Control): Description and Operation
Brake Pedal Switch (BPS)/Brake Deactivator Switch
Engine Control Components
Brake Pedal Switch (BPS)/Brake Deactivator Switch
The BPS, also called the brake deactivator switch, is for vehicle speed control deactivation. A normally closed switch supplies battery positive voltage
(B+) to the PCM when the brake pedal is not applied. When the brake pedal is applied, the normally closed switch opens and power is removed from the
PCM.
On some applications the normally closed BPS, along with the normally open BPP switch, are used for a brake rationality test within the PCM. The PCM
misfire monitor profile learn function may be disabled if a brake switch concern occurs. If one or both brake pedal inputs to the PCM is not changing
states when they were expected to, a diagnostic trouble code (DTC) is set by the PCM strategy.
