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
The throttle position sensor is provided along with a potentiometer (variable resistor) and idle switch, which is interlocked with the throttle valve shaft. The sensor sends MPFI control unit a potentiometer output signal corresponding to opening of throttle valve and an idle switch signal that turns on only when the throttle is nearly to idle position. The MPFI control unit uses these signals to precisely control air/fuel ratio during acceleration and deceleration, as well as idling.
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.