Oil Level Warning Indicator: Description and Operation

PURPOSE
To alert the vehicle operator that the engine oil level is low.

COMPONENTS
The system consists of a float-type sensor mounted to the side of the engine oil pan, an electronic control module, and an instrument panel warning lamp.

OPERATION
The Check Oil Indicator will light with ignition switch in the START position as a bulb prove-out. When ignition switch is turned to RUN or START position, the control module determines whether sensor is grounded (oil low) or ungrounded (oil not low). If oil level is adequate, light will go out in RUN. If oil level is approximately 1.5 quarts or more low, the relay turns the warning lamp ON. The lamp will remain ON until ignition is turned OFF. After ignition is turned OFF, module will not reset for approximately five minutes. This delay allows time for oil drain back before another reading is allowed to occur. If engine is restarted during this delay period, the last reading will be displayed.