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.
Idle Position Switch (Sonata 2.4L)
Turn ignition off. Disconnect TP sensor 3-pin connector. Check for continuity between TP sensor terminals No. 1 (Orange/Black wire) and No. 3 (Blue wire). Continuity should be present when throttle is in idle position. Continuity should not be present when throttle is not in idle position. If continuity is not as specified, ensure accelerator and cruise control cables are correctly adjusted. If cable adjustment is okay, replace TP sensor. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Repair as necessary.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.