LIGHTING SYSTEM FAIL-SAFE CHART


  1. LED HEADLIGHT SYSTEM

    The light control ECU operates in fail-safe mode if any of the following abnormalities are detected.

    Item Abnormal Detection Condition Return Condition Warning

    Abnormal input voltage

    (High input voltage)

    		 Abnormal power source voltage (more than 17 V) is detected. Normal power source voltage (10 to 16 V) is detected. A warning message is displayed

    Abnormal input voltage

    (Low input voltage)

    		 Power source voltage is excessively low (8.5 to 10 V). (LED output current is limited but headlight remains illuminated.) Power source voltage is increases to 8.5 V or more. (Headlight operation will resume.) A warning message is displayed
    Power source voltage is excessively low (below 6 V). (Headlight turns off.) A warning message is displayed
    Abnormal output

    • Open between output terminals (Hi terminal and Lo terminal)

    • Short between an output terminal and body ground

    • Short between output terminals (Hi terminal and Lo terminal)

    		 Output terminals are normal. A warning message is displayed

  2. AUTOMATIC LIGHT CONTROL SYSTEM

    If the main body ECU (multiplex network body ECU) detects a malfunction in the automatic light control sensor, the main body ECU (multiplex network body ECU) performs fail-safe control to prohibit the automatic light control. If the low beam headlights and taillights are on, the lights will remain on until the light control switch is turned off.