DeVille V8-4.6L VIN Y (1998)
Powertrain Control Module: Description and Operation
Malfunction Indicator Lamp (MIL)
Description
The SERVICE ENGINE SOON Malfunction Indicator Lamp (MIL) is located in the Instrument Panel Cluster (IPC).
Operation
The SERVICE ENGINE SOON MIL is controlled by the PCM through CKT 419 and is used to indicate that the PCM has detected a problem that
affects vehicle emissions, may cause powertrain damage, or severely impacts driveability. Refer to DTC P1641 for diagnosis of Service Engine Soon
MIL.
