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.
System Description
NTD control system decides the target traction based on the accelerator operation status and the current driving condition. It then selects the engine torque target by correcting running resistance and atmospheric pressure, and controlling the power-train. Using electric throttle control actuator, it achieves the engine torque development target which corresponds linearly to the driver's accelerator operation.
Running resistance correction control compares the engine torque estimate value, measured vehicle acceleration, and running resistance on a flat road, and estimates vehicle weight gain and running resistance variation caused by slopes to correct the engine torque estimate value.
Atmospheric pressure correction control compares the engine torque estimate value from the airflow rate and the target engine torque for the target traction, and estimates variation of atmospheric pressure to correct the target engine torque. This system achieves powerful driving without reducing engine performance in the practical speed range in mountains and high-altitude areas.
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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