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 314 (BODY CONTROL SYSTEMS - DIAGNOSTICS)PROBLEM SYMPTOMS TABLEHEADLIGHT AND TAILLIGHT SYSTEM
2004 Toyota Celica GT, Standard
Headlight And Taillight System
2004 Toyota Celica GT, StandardSECTION Headlight And Taillight System
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
HEADLIGHT AND TAILLIGHT SYSTEM
| Symptom/Suspect Area | See | |
|---|---|---|
| Headlight Does Not Light Up | ||
| Light Control Switch Circuit | LIGHT CONTROL SWITCH CIRCUIT | |
| Headlight Control Relay Circuit | HEADLIGHT RELAY CIRCUIT | |
| Body ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Taillight Does Not Light Up | ||
| Light Control Switch Circuit | LIGHT CONTROL SWITCH CIRCUIT | |
| Taillight Control Relay Circuit | TAILLIGHT RELAY CIRCUIT | |
| Body ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Automatic Turn Off System Does Not Operate | ||
| Driver's Door Courtesy Switch | DOOR COURTESY SWITCH CIRCUIT | |
| Body ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
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.