Stoplamp switch

WARNING: This page is about a different car, the 2003 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

The brake pedal position (BPP) switch is mounted on the brake pedal bracket.

It switches the stoplights on and tells the EEC-V PCM when the brakes are applied.

The signal of the stoplamp switch is used by the PCM for the following functions:

to release the torque converter lock-up clutch when the brake pedal is depressed,
to switch off the manual selector lever shift lock when the brake pedal is depressed in "P".

No substitute signal is available for the BPP switch.

If the connection to the BPP switch is cut, the manual selector lever cannot be moved out of "P".