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
Electric VTC responds faster than hydraulic VTC and can extend the operation angle of the camshaft. This improves the fuel economy, engine output, and exhaust performance.
This mechanism continuously controls the phase of camshaft by the electric intake valve timing (IVT) control motor with the amount of intake valve operation held constant.
ECM transmits a target position of the electric IVT control motor to electric IVT control module via CAN communication.
The electric IVT control module controls the electric IVT control motor according to a signal from ECM and changes the opening and closing timing of intake valve.
Furthermore, the electric IVT control module has a diagnostic function and transmits a DTC detection signal to ECM via engine communication when detecting a system error.
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Intake camshaft condition |
Electric intake valve timing control actuator operation |
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Advanced angle |
The electric intake valve timing control motor rotates the intake camshaft to advanced angle. |
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Maintained |
Stop rotating the electric intake valve timing control motor to keep the intake camshaft position (cam phase). |
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Retard angle |
The electric intake valve timing control motor rotates the intake camshaft to retard angle. |
Use the Manual With the Right Hardware
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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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