Malfunction Indicator Lamp (MIL)

DESIGN/PURPOSE 

When a malfunction which increases exhaust gases is detected, ECM turns ON MIL and informs the driver of the necessity of inspection and repair. When a malfunction which causes damage to the catalyst is detected, ECM immediately blinks MIL to alert the driver.

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BULB CHECK 

The bulb turns ON after turning ON the ignition switch (engine stop) and turns OFF after restarting the engine.

OPERATION AT COMBINATION METER CAN COMMUNICATION CUT-OFF OR UNUSUAL SIGNAL 

For the operation for CAN communication blackout in the combination meter, refer to Fail-Safe .

SYSTEM DIAGRAM 

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SIGNAL PATH 

• When the lighting conditions of the malfunction indicator lamp (MIL) are satisfied, ECM transmits a malfunction indicator lamp (MIL) signal to the combination meter via CAN communication.
• The combination meter turns ON or blinks the malfunction indicator lamp (MIL), according to a signal received from ECM.

LIGHTING CONDITION 

When all of the following conditions are satisfied:

• Ignition switch: ON
• DTC which influences on exhaust gasses is judged.

For DTCs that the malfunction indicator lamp turns ON and the number of DTC diagnosis trips, refer to DTC Index .

SHUTOFF CONDITION 

When any of the following conditions is satisfied:

• Ignition switch: OFF
• Erase DTC

TIMING CHART 

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