Oil Pressure Sender: Testing and Inspection

INSPECT OIL PRESSURE SENDER GAUGE OPERATION
a. Disconnect the connector from the sender gauge.
b. Apply battery positive voltage to the sender gauge terminal through a test LED.
c. Check that the bulb does not light when the engine is stopped.
d. Check that the LED flashes when the engine is running. The number of flashed should vary with engine speed.
If operation is not as specified, replace the sender gauge.