Oil Pressure Switch Inspection

Reference: OIL PRESSURE SWITCH REMOVAL AND INSTALLATION 

Use an ohmmeter to check switch continuity.

Oil pressure switch specifications 

During engine running: No continuity (∞Ω) 

At engine stop: Continuity (0 Ω) 

Fig 1: Identifying Oil Pressure Switch Continuity

Courtesy of SUZUKI OF AMERICA CORP.