– the CVVT Oil Control Valve (OCV) which supplies the engine oil to the cam phaser or takes out the engine oil from the cam phaser in accordance with the ECM PWM (Pulse With Modulation) control signal,
– the CVVT Oil Temperature Sensor (OTS) which measures the engine oil temperature,
– and the Cam Phaser which changes the cam phase by using the hydraulic force of the engine oil.
The engine oil which is supplied from the CVVT oil control valve changes the cam phase in the direction (Intake Advance/Exhaust Retard) or opposite direction (Intake Retard/Exhaust Advance) of the engine rotation by rotating the rotor connected with the camshaft inside the cam phaser.
• The variable force solenoid (VFS) changes its force depending on the PWM duty to control the stroke of the OCV.
• It also controls the lock, unlock, advanced, retarded, and holding functions.
[CVVT System Mode]
(1) Low Speed / Low Load | (2) Part Load |
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(3) Low Speed / High Load | (4) High Speed / High Load |
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Driving Condition | Exhaust Valve | Intake Valve | ||
Valve Timing | Effect | Valve Timing | Effect | |
(1) Low Speed/Low Load | Completely Advance | * Valve Under-lap * Improvement of combustion stability | Middle | * Valve Under-lap * Improvement of combustion stability |
(2) Part Load | Retard | * Reduction of HC | Retard | * Reduction of pumping loss |
(3) Low Speed /High Load | Completely Advance | * Reduction of pumping loss | Advance | * Prevention of intake back flow (Improvement of volumetric efficiency) |
(4) High Speed/High Load | Completely Advance | * Reduction of pumping loss | Advance | * Prevention of intake back flow (Improvement of volumetric efficiency) |
Hyundai Tucson (NX4) 2022-2025 Service Manual: Seat Heater Switch
- Components
1. Front seat heater switch2. Rear seat heater switch
- Circuit Diagram
Connector Pin Information
PinDescriptionPinDescription
1IGN 117PDW switch
2ILL (+)18PDW IND
34WD lock swtich19-
4Grip control swtich (+)20Heater LH
5Grip control swtich (-)21Heater IND High_LH
...
Hyundai Tucson (NX4) 2022-2025 Service Manual: Front Wiper Motor
- Component Location
1. Cap2. Nut3. Wiper arm & blade4. Cowl top cover5. Bolt6. Wiper motor & linkage assembly7. Wiper motor connector
- Removal
1.Disconnect the negative (-) battery terminal.
2.If necessary, release the wiper blade fixing clip(A) by pulling up
and remove th ...