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Home >> Ford >> 2014 >> Fusion Titanium Hybrid >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Information Center - Instrumentation, Message Center And Warning Chimes (Except Hybrid/ENERGI)) >> Description And Operation >> Instrument Panel Cluster (IPC) - System Operation and Component Description >> Component Description >> Oil Pressure Switch

Oil Pressure Switch

WARNING: This page is about a different car, the 2015 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The oil pressure switch is a normally open switch that is hardwired to the PCM through a single signal circuit. The ground is provided by the switch housing when it is mounted on the engine. The PCM provides a reference voltage to the oil pressure switch. When oil pressure is low, the oil pressure switch remains open, sending the reference voltage high. When the oil pressure is sufficient, the oil pressure switch closes, pulling the reference voltage low to the PCM.

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