Low Oil Level
The instrument panel cluster (IPC) displays the LOW OIL LEVEL message in the driver information center (DIC) when the powertrain control module (PCM) or the engine control module (ECM) detects a low engine oil level. The PCM/ECM only monitors the signal circuit of the engine oil level switch for a brief period when the ignition key moves from ON to START. The DIC receives a serial data message from the PCM/ECM requesting the display of the LOW OIL LEVEL message.