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.
Throttle Position Sensor/Switch
With engine off, unplug TPS connector, located at throttle body. Measure and record resistance between terminals No. 2 and 3 with throttle fully closed. See Fig 1 . Measure and record resistance between terminals No. 2 and 4 with throttle fully closed, then with throttle fully open. If readings are not as specified, replace throttle position sensor. See 4-CYLINDER THROTTLE POSITION SENSOR RESISTANCE table.
| Application | Ohms | |
|---|---|---|
| Terminals No. 2 & 3 | 12,000 | |
| Terminals No. 2 & 4 | ||
| Throttle Fully Closed | 10,000-12,000 | |
| Throttle Fully Open | 3000-5000 | |
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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.