Malfunction Indicator Lamp/Service Engine Soon Warning Lamp

Malfunction Indicator Lamp (MIL)/Service Engine Soon Warning Lamp
The MIL/service engine soon warning lamp is located in the instrument cluster. It illuminates to alert the driver to system malfunctions. Service engine soon warning lamp is the name for this warning lamp in NAS only, it is called MIL in all other markets.

During ignition a self-test function of the lamp is carried out. The lamp will illuminate for 3 seconds then it will extinguish if no faults exist.

Input/Output
The MIL is supplied with battery voltage from the instrument cluster. When the ECM detects a fault, it provides an earth path to illuminate the MIL. Output to the MIL is via pin 20 of connector C0637 of the ECM.