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: Adjustment
- When using voltage meter:
- Turn the ignition switch to OFF.
- Loosen the throttle position sensor holding screws.
- Turn the ignition switch to ON.
- Adjust the throttle position sensor to the proper position to allow the voltage signal to the ECM to be in specification.
Connector & terminal / Specified voltage (B135) No. 3 (+) - No. 13 (-) / 0.45 - 0.55 V [Fully closed.]
- Tighten the throttle position sensor holding screws.
Tightening torque: 1.6 N.m (0.16 kgf-m, 1.2 ft-lb)
- When using SUBARU Select Monitor:
- Turn the ignition switch to OFF.
- Loosen the throttle position sensor holding screws.
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.
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