Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 129 (AUTOMATIC HEADLIGHTS)ADJUSTMENTSAUTOMATIC LIGHT CONTROL SENSOR
2004 Toyota Celica GT, Standard
Automatic Light Control Sensor
2004 Toyota Celica GT, StandardSECTION Automatic Light Control Sensor
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This procedure should be performed ONLY after the multiplex communication system has been diagnosed and DTC B1244/44 requires sensitivity adjustment of the automatic light control sensor.
If headlights illuminate too early, turn sensitivity knob on automatic light control sensor counterclockwise. If headlights illuminate too late, turn sensitivity knob on automatic light control sensor clockwise. See Fig 1.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.