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Brake Pedal Position Switch

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2002 Mercury Sable, 2002 Mercury Mountaineer, 2002 Mercury Grand Marquis, 2002 Mercury Cougar, and 2002 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Brake Pedal Position (BPP) switch is either hard wired to PCM and brakelight circuit, or broadcast over the Standard Corporate Protocol (SCP) network via another module to be received by PCM. The BPP input is used by PCM to disengage torque converter clutch and on some applications as an input for idle speed control for idle quality. If all brakelights are burned out (open circuit) on applications where BPP switch is hard wired to PCM, high voltage will be present at PCM due to a pull-up resistor in PCM, providing engine with fail-safe operation.

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