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.
Etc (Electronic Throttle Control) System: Description
ETC system controls the opening angle of throttle valve to operate throttle valve control, idle speed control, traction control, auto cruise control and so on.
ECM receives accelerator position sensor signals (APS1, APS2) and calculates appropriate throttle opening angle which is used to control the throttle angle of throttle motor. Throttle position sensor integrated into throttle body assembly detects the throttle opening angle (TPS1, TPS2) and sends it to ECM for feedback control.
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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