Low Oil Indicator Lamp

The "LOW OIL" indicator ground is controlled by the engine oil level indicator control module. To check for a low oil condition, the low oil module looks for a ground through the oil level switch after the ignition switch has been turned to "OFF" or "LOCK."

The low oil module checks for a low oil condition 32 minutes after the ignition switch is turned to "OFF" or "LOCK," if the previous ignition cycle was less than 12 minutes. If the previous ignition cycle was longer than 12 minutes, the low oil module checks for a low oil condition 3 minutes after the ignition switch is turned to "OFF" or "LOCK."

When the low oil module loses the ground through the oil level switch (oil level switch open indicating low oil level), the low oil module grounds the "LOW OIL" indicator for the duration of the next ignition cycle.
When the low oil module is grounded through the oil level switch, the low oil module grounds the "LOW OIL" indicator for a bulb test when the ignition switch is turned to "RUN" during the next ignition cycle. The bulb test takes four to five seconds.