Hyundai Elantra (CN7): Engine Control System / RCV Control Solenoid Valve
Description and operation
RCV (Recirculation Valve) Control Solenoid Valve is installed on the intercooler inlet pipe and operates the RCV actuator which controls the by-pass passage of the turbocharger compressor.When the throttle is closed, while the engine is running at cruise rpm (tip-out), the turbocharger boost pressure raises rapidly. The pressure wave strikes a compressor blades causing a knocking noise. To prevent this the ECM opens the recirculation valve which allows excessive boost pressure to vent back to the air cleaner side of the turbocharger compressor.
Specifications
Item
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Specification
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Coil Resistance (Ω)
| 28.3 - 31.1 [20°C (68°F)]
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Schematic diagrams
Harness Connector
Repair procedures
| 1. | Turn the ignition switch OFF. |
| 2. | Disconnect the RCV control solenoid valve connector. |
| 3. | Measure resistance between the valve terminals 1 and 2. |
| 4. | Check that the resistance is within the specification. Specification : Refer to "Specification" |
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| 1. | Turn the ignition switch OFF and disconnect the battery negative (-) cable. |
| 2. | Remove the air cleaner assembly. (Refer to Engine Mechanical System - "Air Cleaner Assembly") |
| 3. | Disconnect the RCV control solenoid valve connector (A). 
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| 4. | Remove the vacuum hose (A). |
| 5. | Remove the RCV control solenoid valve (C), after loosen mounting bolt (B). Tightening Torque : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft) |
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| Install the component to the specified torques. |
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| Note that internal damage may occur when the component is dropped. In this case, use it after inspecting. |
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| Insert the sensor in the installation hole and be careful not to damage it during installation. |
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Description and operation
DesrcriptionThe Electric Waste Gate Actuator(EWGA) is installed on the turbocharger. EWGA operates vain in west gate turbocharger and controls the compressed air by PWM signal of ECM.
Description and operation
DescriptionIntegrated Thermal Management Module (ITM) is a device that controls the coolant flow rate according to coolant temperature.
Other information:
Refrigerant System Service Basics (R-134a)Refrigerant Recovery Use only service equipment that is U.L-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a(R-134a) from the air conditioning system.
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Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or
Components and components location
Component Location1. Heater unit assemblyCompoents1. Heater unit assembly2. Heater tube cover3. Heater core assembly4. Mode control actuator [LH]5. Dummy PTC6. Temperature control actuator [LH]7. Heater case [LH]8.
