Hyundai Tucson (NX4) 2022-2026 Service Manual / 4 Wheel Drive (4WD) System / Coupling Assembly / Pressure Sensor

Hyundai Tucson: Coupling Assembly / Pressure Sensor

- Description The 4WD ECU makes a Motor Pump(Actuator) turn round for generating an oil pressure. And then it presses a multiple disk clutch and transfers the generated torque into rear wheels. Its torque value varies according to a pressure status.

• Component location

- Circuit Diagram

- Inspection

Measure the resistance of pressure sensor

1.Turn ignition switch OFF.

2.Disconnect the pressure sensor connector.

3.Measure resistance between sensor terminal and terminal.

4.Check the measured resistance. (Refer to table)

[Table 1]

Terminal	Resistance
PIN 2 – PIN 3	1.59 - 2.39 kΩ
PIN 1 – PIN 3	152 - 231.6 kΩ
PIN 1 – PIN 2	153.52 - 233.88 kΩ

- Removal

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

1.Remove the coupling assembly.(Refer to 4 Wheel Drive (4WD) System - "Direct Electro Hydraulic Actuator Coupling")

• Keep it level with the sticker (A) on the top of the coupling.

2.Remove the pressure sensor (A).

• Keep going horizontal state to prevent leaks during remove the pressure sensor.

Tightening torque:10.8 - 14.7 N.m (1.1 - 1.5 kgf.m, 8.0 - 10.8 lb-ft)

- Installation

1.To install, reverse the removal procedure.

• Check the cleanliness of the pressure sensor before installation.

• Check the pressure sensor O-ring (A).

• Keep it level with the sticker (A) on the top of the coupling.

Oil hydraulic Motor(Actuator)

- Description The 4WD ECM controls the Pump Motor Pump (Actuator) to generating an oil pressure. The pressure engages a multiple disk clutch to transfer torque to the rear wheels. The torque to ...

4WD Control System

- Adjustment Description The friction material inside the coupling will degrade over time. Therefore, corresponding compensation values must be referenced and entered after replacing the cont ...

Other information:

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