Oil Pressure Switch Test

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the oil pressure switch connector (A) from the oil pressure switch (B).

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