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 94 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING)FUEL SYSTEMSFUEL DELIVERYFUEL PUMP RESISTANCE

2004 Toyota Celica GT, Standard

Fuel Pump Resistance

2004 Toyota Celica GT, StandardSECTION Fuel Pump Resistance

WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2003 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

On ES300, measure resistance between fuel pump 2-pin terminals. On RX300, measure resistance between 5-pin fuel pump terminals No. 4 and 5. See Fig 1 and Fig 2 . Replace fuel pump if resistance is not 0.2-3.0 ohms at 68°F (20°C).

Fig 1: Identifying Fuel Pump Terminals (ES300)

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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.