The DRL system automatically switches the headlights to HI beams (50 % dim) or illuminates the DRL when the ignition is switched ON (engine on), the parking brake is released, and the selector lever is in a position other than P (ATX).
The front body control module (FBCM) performs DRL system fail-safe. (See FRONT BODY CONTROL MODULE (FBCM).)
Without discharge headlight system
With discharge headlight system
| Engine switch | Parking brake | Selector lever position (ATX) | Light switch | Dimmer switch | Auto light system | DRL |
| ON (engine off or on) | Released | Except P | OFF | LO | — | On |
| HI | On |
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| FLASH-TO-PASS | Off |
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| AUTO | LO | Off | On |
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| On | Off |
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| HI | Off | On |
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| On | Off |
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| FLASH-TO-PASS | Off | Off |
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| On | Off |
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| TNS | LO | — | On |
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| HI | On |
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| FLASH-TO-PASS | Off |
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| HEAD | LO | — | Off |
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| HI | Off |
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| FLASH-TO-PASS | Off |
1. If the operation conditions are met, the front body control module (FBCM) turns on the DRL circuit transistor.
2. When the transistor turns on, the DRL relay turns on.
3. If the DRL relay turns on, the electrical current flows in-line relative to the left/right headlight HI circuits and the headlights HI turn on at half the brightness of normal illumination.
1. If the operation conditions are met, the front body control module (FBCM) turns on the DRL circuit transistor.
2. When the transistor turns on, the DRLs are illuminated.
