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.
Using Hand-Held Tester
2004 Toyota Celica GT, StandardSECTION Using Hand-Held Tester
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
- Prepare the hand-held tester.
- Connect the hand-held tester to DLC3. See Fig 1.
- Turn the ignition switch ON and switch the hand-held tester main switch ON.
- Use the hand-held tester to check the DTCs, note them down. For the opening instructions, see the hand-held tester's instruction book.
- See DIAGNOSTIC TROUBLE CODE INDEX table to confirm the details of the DTCs.
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.