Oil Pressure Switch Test

WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the oil pressure switch connector (A).

Fig 1: Identifying Oil Pressure Switch Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between the positive terminal (B) and engine (ground). There should be continuity with the engine stopped. There should be no continuity with the engine running.