LIGHTING SYSTEM FAIL-SAFE CHART


  1. LED HEADLIGHT SYSTEM


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

      Item Abnormality Detection Condition Return Condition Multi-information Display

      Abnormal input voltage

      (High input voltage)

      		 Abnormal power source voltage (more than 17 V) is detected. Normal power source voltage (10 V to 16 V) is detected. "Check Headlight System" is displayed.

      Abnormal input voltage

      (Low input voltage)*

      		 Power source voltage is low (8.5 V to 10 V) and LED output current is limited. (The headlights will remain illuminated.) Normal power source voltage (10 V to 15 V) is detected. "Check Headlight System" is displayed.
      Power source voltage is low (below 6 V). (Headlight operation is stopped) Power source voltage of 8.5 V or more is detected.
      Abnormal output

      • Open in output side circuit

      • Short between output terminal and body ground

      • Short between output terminals (Hi and Lo)

      		 Light control switch is turned from off to head position. "Check Headlight System" is displayed.

      • *: When the headlights are on and the input voltage is between 6 and 10 V, the headlights dim.

  2. AUTOMATIC LIGHT CONTROL SYSTEM


    1. 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/rear side marker lights are on, the lights will remain on until the light control switch is turned off.