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Diagnostic Aids

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Perform this test when directed by QUICK TEST. Brake Pressure Applied (BPA) switch is a pressure switch that senses brake pressure and is redundant with Brake On/Off (BOO) switch to provide a back-up to deactivate cruise control.

NOTE: BPA switch equipped on F650-750 with cruise control only.
Fig 1: Identifying Brake Pressure Applied Switch Circuits (Econoline)
G00096678Courtesy of FORD MOTOR CO.
Fig 2: Identifying Brake Pressure Applied Switch Circuits (Excursion & F250-550)
G00096679Courtesy of FORD MOTOR CO.
Fig 3: Identifying Brake Pressure Applied Switch Circuits (F650-750 W/Air Brakes)
G00096680Courtesy of FORD MOTOR CO.
Fig 4: Identifying Brake Pressure Applied Switch Circuits (F650-750 W/Hydraulic Brakes)
G00096681Courtesy of FORD MOTOR CO.