Brake Shift Interlock Operation
WARNING: This page is about a different car, the 2017 Ford F-550 Super Duty, 2017 Ford F-450 Super Duty, 2017 Ford F-350 Super Duty, and 2017 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The brake shift interlock actuator inhibits the selector lever movement from the P position by mechanically blocking the detent pawl of the selector lever mechanism. When the brake pedal is pressed (BPP switch closed) with the ignition key in the RUN position and the transmission in P, the brake shift interlock actuator is energized by the BCM, allowing the selector lever to be moved out of the P position.
The brake shift interlock system consists of:
- a brake shift interlock actuator that is integral to the selector lever assembly.
- an ignition switch.
- a BPP switch.
- a BCM.