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.
Test 9: Throttle Position Switch (TPS)
Check that switch is properly installed and firmly seated. To determine throttle sensor resistance values, use volt/ohmmeter connected across switch terminals. Check resistance at part throttle opening and full throttle opening. See THROTTLE POSITION SWITCH RESISTANCE table. If values are incorrect, adjust or replace sensor as needed.
| Throttle Position | Ohms |
|---|---|
| Partially Open | 1,000,000 |
| Fully Open | 3 |
Use the Manual With the Right Hardware
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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.
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