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.
CVVT Oil Control Valve ( OCV)
2007 Kia Rondo L4-2.4LSECTION CVVT Oil Control Valve ( OCV)
CVVT OIL CONTROL VALVE (OCV)
INSPECTION
FUNCTION AND OPERATION PRINCIPLE
The Continuously Variable Valve Timing (CVVT) system controls the amount of valve overlap by varying the amount of oil flow into an assembly mounted on the intake camshaft through ECM control of an oil control valve. An Oil Temperature Sensor (OTS) is used to allow ECM monitoring of engine oil temperature. As oil is directed into the chambers of the CVVT assembly, the cam phase is changed to suit various performance and emissions requirements.
1. When camshaft rotates engine rotation-wise: Intake Advance/Exhaust-Retard
2. When camshaft rotates counter engine rotation-wise:Intake Retard/Exhaust- Advance
SPECIFICATION
Coil Resistance (ohm) 6.9 - 7.9 ohms at 20 °C (68 °F)
CIRCUIT DIAGRAM
COMPONENT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect OCV connector.
3. Measure resistance between OCV terminals 1 and 2.
4. Check that the resistance is within the specification.
Specification: Refer to SPECIFICATION.
INSPECTION
FUNCTION AND OPERATION PRINCIPLE
The Continuously Variable Valve Timing (CVVT) system controls the amount of valve overlap by varying the amount of oil flow into an assembly mounted on the intake camshaft through ECM control of an oil control valve. An Oil Temperature Sensor (OTS) is used to allow ECM monitoring of engine oil temperature. As oil is directed into the chambers of the CVVT assembly, the cam phase is changed to suit various performance and emissions requirements.
1. When camshaft rotates engine rotation-wise: Intake Advance/Exhaust-Retard
2. When camshaft rotates counter engine rotation-wise:Intake Retard/Exhaust- Advance
SPECIFICATION
Coil Resistance (ohm) 6.9 - 7.9 ohms at 20 °C (68 °F)
Circuit Diagram:
CIRCUIT DIAGRAM
COMPONENT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect OCV connector.
3. Measure resistance between OCV terminals 1 and 2.
4. Check that the resistance is within the specification.
Specification: Refer to SPECIFICATION.
RENDER: 1.0x
NO RELATED
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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.