Malfunction Indicator Lamp: Description and Operation

MALFUNCTION INDICATOR LAMP (MIL)




An On Board Diagnostic lamp (MIL) comes ON to notify the driver that there is a problem in the vehicle. However the MIL will go OFF automatically after 3 sequential driving cycles without the same malfunction.

MIL Bulb Check
Immediately after the ignition switch is turned on (ON position), the malfunction indicator lamp is lit continuously to indicate that the malfunction indicator lamp operates normally.

MIL Related Systems and Components
- Catalyst
- Fuel system
- Mass Air Flow Sensor
- Intake Air Temperature Sensor
- Engine Coolant Temperature Sensor
- Throttle Position Sensor
- Upstream Oxygen Sensor
- Downstream Oxygen Sensor Heater
- Downstream Oxygen Sensor
- Upstream Oxygen Sensor Heater
- Injector
- Misfire
- Crankshaft Position Sensor
- Camshaft Position Sensor
- Evaporative Emission Control System
- Vehicle Speed Sensor
- Idle Control Valve
- Power Supply
- ECM
- MT/AT Encoding
- Acceleration Sensor
- MIL "ON" Request Signal
- Power Stage
- Canister Close Valve
- Fuel Tank Pressure Sensor