Oil Level Warning Indicator: Testing and Inspection

INSPECT ENGINE OIL LEVEL WARNING SWITCH CONTINUITY




a. Check that there is continuity between terminals with the switch at each position.




b. Heat the switch to above 60° C (140° F) in an oil bath.
c. Check that there is continuity between terminals with the switch ON (float up).
d. Check that there is no continuity between terminals with the switch OFF (float down).
If operation is not as specified, replace the switch.

INSPECT ENGINE OIL LEVEL WARNING SWITCH CIRCUIT







Disconnect the switch connector and inspect the connector on wire harness side, as shown.
If continuity is not as specified, inspect the wire harness or ground point.

INSPECT ENGINE OIL LEVEL WARNING LIGHT




a. Disconnect the connector from the switch.
b. Turn the ignition switch ON. Check that the warning light lights up approximately 40 seconds later.
If the warning light does not light up, inspect the bulb or wire harness.