Hyundai Tucson: Engine Control System / Canister Close Valve (CCV)

- Description Canister Close Valve (CCV) is normally open and is installed on the canister ventilation line. It seals evaporative emission control system by shutting the canister from the atmosphere during EVAP leak detection process.

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.

1.Turn the ignition switch OFF.

2.Disconnect the CCV connector.

3.Measure resistance between the CCV terminal 1 and 2.

4.Check that the resistance is within the specification.

Specification : Refer to "Specification"

5.Disconnect the vapor hose connected with the canister from the CCV.

6.Connect a vacuum pump to the nipple.

7.Ground the CCV control line and apply battery voltage to the CCV power supply line.

8.Apply vacuum and check the valve operation.

Specification : Vacuum maintained

• Be careful not to damage the parts located under the vehicle (floor under cover, canister, fuel tank) when raising the vehicle using the lift.(Refer to General Information - "Lift and Support Points")

1.Turn the ignition switch OFF and disconnect the battery (-) terminal.

2.Remove the floor under cover (A).

Tightening Torque :7.9 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

3.Separate the ventilation hose (A).

4.Disconnect the canister close valve connector (A).

5.Lifting the fixed part (A) and then rotating CCV (B) 30 degrees in the direction of the arrow.

• 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.

1.Install in the reverse order of removal.