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Home >> Ford >> 2003 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - 7.3L Diesel >> Computerized Engine Controls >> Input Devices >> Brake Pressure Applied Switch
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Brake Pressure Applied Switch

NOTE: BPA switch may also be referred to as deactivator switch or redundant speed control deactivator switch.

The brake pressure applied switch is present on vehicles equipped with speed control. All vehicles with hydraulic brakes have a single Brake Pressure (BP) switch. The BP switch provides a backup for the Brake Pedal Position (BPP) switch. Normally, a brakes-applied signal from the BPP switch will disengage the speed control. If the BPP switch signal is lost, the BP switch will then supply the brakes-applied signal to the speed control servo.

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