Hyundai Santa Cruz: Engine Control System / E-CVVT motor

- Description E- CVVT (Electric Continuous Variable Valve Timing) system, located on the intake camshaft of the engine, uses motor rotation to control the rotation angle of camshaft relative to the rotation of crankshaft regardless of engine pressure. E-CVVT controls the DC motor current (duty signal) to more closely control the system compared to the previous pressure type, to increase reaction speed of cam, to improve startability, and to reduce the emission of exhaust gas. Also, operation range of intake valve (valve opening angle) is expanded. So, the output and fuel efficiency are improved. - Operation

- Specification Electric E-CVVT Motor [Bank 1 / Intake]

Item	Specification
Operating Angle	90°
Initial Position	The highest Advance (adjustable at startup)
Gear Ratio	60 : 1
Motor Max Power	127W / 12V
Controlled Current	Max 48.1A [-30°C (-22°F)] / 1A [When maintaining the phase]

- Components Appearance of E-CVVT is similar to that of hydraulic CVVT. Connector that drives DC motor and protection cover that protects the motor are mounted on the upper part. DC motor that drives the CVVT is mounted inside and covering part is sealed in order to protect oil from flowing inside.

- Circuit Diagram

Harness Connector

- Removal

1.Remove the E-CVVT.(Refer to Engine Mechanical System - "CVVT Assembly")

- Installation

1.Install the E-CVVT.(Refer to Engine Mechanical System - "CVVT Assembly")

- Adjustment

   

• After replacing or remounting the E-CVVT assembly, be sure to reset the learned value from the additional feature menu on the diagnostic tool diagnostic device.

• When the learned value for electronic cam position is erased, start learning the cam position while cranking. The engine can start once this is completed. Then cranking should be repeated for up to 2-3 times to complete learning.