Celica GT Liftback L4-2164cc 2.2L DOHC MFI (1998)
Oil Pressure Sender: Testing and Inspection
INSPECT LOW OIL PRESSURE SWITCH CONTINUITY
a. Check that continuity exists between terminal and ground with the engine stopped.
b. Check that no continuity exists between terminal and ground with the engine running.
HINT: Oil pressure should be over 29.4 kPa (0.3 kgf/Sq.cm, 4.3 psi)
If operation is not as specified, replace the switch.