Oil Pressure Switch Test

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Honda Ridgeline, 2013 Honda Ridgeline, 2012 Honda Ridgeline, 2011 Honda Ridgeline, and 2010 Honda Ridgeline. However, it is still accessible from the selected car via links, so may be relevant.

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

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