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 242 (AIR BAG RESTRAINT SYSTEMS)SYSTEM OPERATION CHECK
2004 Toyota Celica GT, Standard
System Operation Check
2004 Toyota Celica GT, StandardSECTION System Operation Check
WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.
- AIR BAG warning light
Turn ignition switch to ON position. If AIR BAG warning light illuminates for about 6 seconds and then goes off, system is functioning properly. If AIR BAG warning light illuminates and does not go off or flashes, Diagnostic Trouble Code (DTC) is stored in air bag sensor assembly memory. Go to RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS) under DIAGNOSTICS. If AIR BAG warning light responds in any other way, go to DIAGNOSTIC TESTS .
- Passenger-side air bag on/off light
Turn ignition switch to ON position. If passenger-side air bag on/off light illuminates for about 4 seconds and then goes off for about 2 seconds. About 6 second after ignition switch is turned to ON position, passenger-side air bag indicator light will be on or off, depending on condition of front passenger occupant classification system. See IDENTIFYING FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM INDICATOR LIGHT CONDITIONS table.
IDENTIFYING FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM INDICATOR LIGHT CONDITIONS
| Condition | ON indicator | OFF indicator |
|---|---|---|
| Vacant | OFF | OFF |
| Adult | ON | OFF |
| Child is seated | OFF | ON |
| Child restraint system is set | OFF | ON |
| Front passenger occupant classification system failure | OFF | ON |
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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.