Hyundai Tucson: Engine Control System / Electric EGR Control Valve

- Description The Electric EGR Control Valve is installed in between the EGR cooler and the exhaust line and is a solenoid valve. This valve controls EGR (Exhaust Gas Recirculation) amount by the ECM's duty control signal depending on engine load and the need of intake air.The Exhaust Gas Recirculation (EGR) system is used to add the exhaust gas to intake air in order to reduce an excess of air and the temperature in the combustion chamber.

1.In the engine control system, failure can be quickly diagnosed by using the diagnosis tool.

(1)Self diagnosis : Checking failure and code number (DTC).

(2)Current data : Checking the system input/output data state.

(3)Actuation test : Checking the system operation condition.

(4)Additional function : Controlling other features including system option setting and zero point adjustment.

[Motor]

1.Turn the ignition switch OFF.

2.Disconnect the EEGR valve connector.

3.Check that the EEGR valve is stuck by foreign material.

4.Measure resistance between motor 4 and 5 control terminals of the motor.

5.Check that the resistance is within the specification.

Specification : Refer to Specification

[Feedback Position Sensor]

1.Connect the diagnostic tool to the data link connector.

2.Perform the fully open and the fully closing operation of the EEGR valve by using the actuation test.

3.Check that the voltage is within the specification.

Specification : Refer to Specification

1.Remove the EGR cooler.(Refer to Engine Mechanical System - "EGR Cooler")

2.Disconnect the EEGR control valve connector (A).

3.Loosen the EEGR pipe mounting bolt (A).

Tightening Torque :18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)

4.Remove the EEGR valve (A) after loosening the mounting bolt.

Tightening Torque :52.0 - 57.9 N.m (5.3 - 5.9 kgf.m, 38.3 - 42.7 lb-ft)

• Install the component with the specified torques.

• Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

• Be careful of foreign material not to flow into the valve.

1.Install in the reverse order of removal.