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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 249 (BODY ELECTRICAL SYSTEMS (TROUBLESHOOTING))TROUBLESHOOTINGPROBLEM SYMPTOMSFOG LIGHT SYSTEM
2004 Toyota Celica GT, Standard
Fog Light System
2004 Toyota Celica GT, StandardSECTION Fog Light System
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.
This system uses the multiplex communication system, so check diagnosis system of the multiplex communication system before you proceed with troubleshooting.
FOG LIGHT SYSTEM
| Symptom/Suspect Area | See | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fog Light Does Not Light Up With Light Control SW In HEAD (Headlight Is Normal) | ||||||||||||
| FOG Fuse (I/P JB) | (1) | |||||||||||
| Fog Light Relay | (2) | |||||||||||
| Fog Light Switch | (3) | |||||||||||
| Wire Harness | ..... | |||||||||||
| Body ECU | (4) | |||||||||||
| Fog Light Does Not Light Up With Light Control SW In HEAD (Headlight Does Not Light) | ||||||||||||
| Other Parts | (5) | |||||||||||
| Wire Harness | ..... | |||||||||||
| Only One Fog Light Does Not Light | ||||||||||||
| Bulb | ..... | |||||||||||
| Wire Harness | ..... | |||||||||||
|
||||||||||||
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.