
1. Intake actuator
1.Turn the ignition switch OFF.
2.Disconnect the intake actuator connector.
3.Verify that the intake actuator operates to the fresh air position when connecting 12V to terminal 3 and grounding terminal 4.Verify that the intake actuator operates to the recirculated air position when connected in reverse.

1. -
2. -
3. Recirculated air
4. Fresh air
5. Sensor ground
6. Feedback signal
7. Sensor (+ 5V)
4.Connect the intake actuator connector.
5.Turn the ignition switch ON.
6.Check the voltage between terminal 5 and 6.
| Door position | Voltage (V) | Error detecting |
| Fresh air | 0.5 ± 0.15 | Low voltage : 0.1V or less High voltage : 4.9V or more |
| Recirculated air | 4.5 ± 0.15 |
7.If the intake actuator does not operate well, substitute with a known-good intake actuator and check for proper operation.
8.Replace the intake actuator if it is proved that there is a problem with it.
1.Disconnect the negative (-) battery terminal.
2.Remove the main crash pad assembly.(Refer to Body (Interior and Exterior) - "Main Crash Pad Assembly")
3.Disconnect the intake actuator connector (A) and loosen the mounting screws and remove the intake actuator (B).

4.Install in the reverse order of removal.
Climate Control Air Filtar
ControllerHyundai Tucson (NX4) 2022-2026 Service Manual: Schematic Diagrams
- Terminal Function
ABS / ESC
PIN NoDesciption CurrentResistance
1Pump motor supply voltage137 A10 MΩ
2Main CAN Low30 mA250 mΩ
3---
4-- -
4---
5---
6---
7---
8---
9---
10- --
11- --
12---
13Recycle pump ground137 A 10 MΩ
14Main CAN High30 mA250 mΩ
15---
16Stop lam ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Crankcase Emission Control System
Description and Operation
- Description
A : Crankcase pressure regulating valve (PRV)B : Breather hoseC : Intake hoseD : Air flowE : Intake manifoldF : Cylinder block
â‘ Blow-by gas flowâ‘¡ Blow-by gas inflow to the cylinder head cover
throungh the cylinder block & head & chain c ...