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.
2017 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Throttle Sensor (Method With SUBARU Select Monitor)
- After warming-up the engine, turn the ignition switch to OFF.
- Turn the ignition switch to ON. (engine OFF)
- Read the throttle opening angle signal and voltage of throttle sensor using Subaru Select Monitor. <Ref. to DISPLAY CURRENT ENGINE DATA , OPERATION, Subaru Select Monitor.>
NOTE:
Due to the specification of the Subaru Select Monitor, value read from the throttle opening angle signal is highlighted and displayed as the voltage readings of sub throttle sensor.
| Throttle sensor | Throttle opening angle signal | Standard |
|---|---|---|
| Main | 0.0% | Approx. 0.7 V |
| 100.0% | Approx. 3.9 V | |
| Sub | 0.0% | Approx. 1.1 V |
| 100.0% | Approx. 4.4 V |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.