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Home >> Ford >> 2017 >> Expedition XL, RWD >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Information Center - Instrumentation, Message Center, And Warning Chimes >> Description And Operation >> Information And Message Center >> Component Description >> Parking Brake Position Switch

Parking Brake Position Switch

The parking brake position switch is hardwired to the BCM through a single signal circuit and grounded through a separate ground circuit. The BCM provides a battery reference voltage on the signal circuit. When the parking brake is not applied, the parking brake position switch is open. When the parking brake is applied, the parking brake position switch closes, pulling the reference voltage low.

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