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Home >> Ford >> 2005 >> Excursion 6.0 P, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550) >> Pinpoint Test AI: Brake Pedal Position (BPP) Switch >> Introduction >> Signal Function

Signal Function

The BPP switch provides a 12-volt input signal to the powertrain control module (PCM) whenever the brake pedal is applied. The BPP switch input is used to deactivate the speed control system and the power take-off (PTO) system (if equipped).

Fig 1: Identifying PCM Body Harness Connector And Brake Pedal Position Switch Connector
G03982267Courtesy of FORD MOTOR CO.
CAUTION: The PCM harness connectors must be properly seated and the connector latch properly attached to eliminate possible driveability concerns or a no start condition. Installing the PCM connectors on an angle may cause an improper connection, misdiagnosis, and damaged components. Install the connector until the lever pivots and seats itself. Apply light pressure to get the connector into position on the PCM and then fully seat the connector.
NOTE: Visually inspect the harness connectors for corrosion, damage, proper mating, and correct pin tension.
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