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 MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 119 (ENGINE CONTROLS (REMOVAL & INSTALLATION))FUEL SYSTEMTHROTTLE BODYDISASSEMBLY (GS300 & IS300)
2004 Toyota Matrix XR, FWD, Standard
Disassembly (GS300 & IS300)
2004 Toyota Matrix XR, FWD, StandardSECTION Disassembly (GS300 & IS300)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- If necessary to remove Throttle Position (TP) sensor, remove retaining screws and TP sensor from throttle body. See Fig 1.
- If necessary to remove throttle control motor, ensure TP sensor is removed from throttle body. Disconnect electrical connector for throttle control motor from wiring bracket. See Fig 1. Remove retaining screws and cover to access throttle control motor. Remove retaining screws and throttle control motor from throttle body.
- If necessary to remove accelerator pedal position sensor, using small screwdriver, bend tabs on washer plate away from retaining screws for accelerator pedal position sensor. See Fig 1. Remove retaining screws, washer plate and accelerator pedal position sensor from throttle body.
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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.