Step 8 - Inspect Low Oil Pressure Switch Continuity

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Oil pressure should be over 24.5 kPa (0.25 kgf/cm2, 3.55 psi).

Check that continuity exists between terminal and ground with the engine stopped.

Fig 1: Testing Low Oil Pressure Switch
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Check that no continuity exists between terminal and ground with the engine running.

If operation is not as specified, replace the switch.