Tundra 4WD V8-4.7L (2UZ-FE) (2003)
Oil Pressure Gauge: Testing and Inspection
INSPECT OIL PRESSURE GAUGE RESISTANCE
Measure the resistance between terminals A and B.
If resistance value is not as specified, replace the receiver gauge.
INSPECT OIL PRESSURE SWITCH CONTINUITY
a. Disconnect the connector from the switch.
b. Check that continuity exists between terminal and ground with the engine stopped.
c. Check that no continuity exists between terminal and ground with the engine running.
HINT: Oil pressure should be over 24.5 kPa (0.25 kgf/sq.cm, 3.55 psi).
If operation is not as specified, replace the switch.