Oil Pressure Switch Test

Disconnect Yellow/Red wire from oil pressure switch. Use an ohmmeter to check continuity of oil pressure switch. With engine off, continuity should exist between oil pressure switch terminal and ground. With engine running, no continuity should exist. If switch fails to operate as described, check engine oil level and oil pump pressure.

This circuit is controlled by the integrated control unit. For more information, see INTEGRATED CONTROL UNIT -- CIVIC, CRX & CIVIC WAGON article under COMMUNICATION DEVICES.