LIGHTING (EXT) AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM FAIL-SAFE CHART
AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM
The headlight leveling ECU assembly operates in fail-safe mode if an abnormal condition such as those listed below has been detected, and maintains the last low beam status.
| Item | Abnormality Detection Condition | Return Condition | Multi-information Display |
|---|---|---|---|
| Rear height control sensor sub-assembly power source voltage | Abnormal rear height control sensor sub-assembly power source voltage (4.6 V or less, or 6.25 V or more) is detected. | Abnormal voltage is not detected for 5 seconds consecutively | "Headlight System Malfunction Visit Your Dealer" is displayed |
| Rear height control sensor sub-assembly signal voltage | Abnormal rear height control sensor sub-assembly signal voltage (0.25 V or less, or 4.75 V or more) is detected. | ||
| High power source voltage | Abnormally high IG supply voltage (18.5 V or more) is detected. | Voltage of 17.5 V or less is detected | "Headlight System Malfunction Visit Your Dealer" is displayed |
| Low power source voltage | Abnormally low IG supply voltage (9.0 V or less) is detected. | Voltage of 9.3 V or more is detected for 0.1 seconds | "Headlight System Malfunction Visit Your Dealer" is displayed |
| Reset while running | Temporary loss of power, etc. while driving. | Vehicle is stopped | "Headlight System Malfunction Visit Your Dealer" is displayed |