Park Avenue V6-231 3.8L VIN L SFI (1993)
Oil Life Module: Description and Operation
OIL LIFE MODULE:
The oil life module calculates engine oil life based on vehicle speed, engine temperature, distance traveled and engine revolutions. It receives this
information over the serial data line from the PCM. When the oil life module determines that engine oil requires changing, it turns on the
CHANGE OIL SOON indicator for approximately 60 seconds after ignition switch is turned to RUN. The oil life module has a set of diagnostic
trouble codes; if an oil life monitor diagnostic trouble code is set, the CHANGE OIL SOON indicator is lit continuously. The CHANGE OIL
SOON indicator lights for 3 seconds after ignition switch is turned to RUN as a bulb check.
