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 264 (BODY CONTROL SYSTEMS - DIAGNOSTICS)PROBLEM SYMPTOMSLIGHT CONTROL
2004 Toyota Celica GT, Standard
Light Control
2004 Toyota Celica GT, StandardSECTION Light Control
WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
LIGHT CONTROL SYSTEM
| Symptom/Suspect Area | See | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Automatic Light Control Does Not Operate | ||||||||||||
| Light Sensor Circuit | (1) | |||||||||||
| Headlight Control Switch Circuit | (2) | |||||||||||
| Body ECU | (3) | |||||||||||
| Auto Turn-Off Does Not Operate | ||||||||||||
| Door Courtesy Switch Circuit (Driver Side) | (4) | |||||||||||
| Ignition Switch | (5) | |||||||||||
| Driver Door ECU | (3) | |||||||||||
| Body ECU | (3) | |||||||||||
|
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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.