• Automatic transaxle system relies on various measurement data to determine the current control status and extrapolate the necessary compensation values.
• These values are used to control the actuators and achieve the desired control output.
• If a problem with the drivetrain, including the transaxle, has
been identified, perform self-diagnosis and basic transaxle inspection
(oil and fluid inspection) and then check the control system's
components using the diagnosis tool.

Repair proceduresHyundai Tucson (NX4) 2022-2026 Service Manual: Variable Intake Solenoid (VIS) Valve
- Description
Variable Intake manifold Solenoid (VIS) valve is installed on the
intake manifold. The VIS valve controls the vacuum modulator which
activates a valve in the intake manifold. The ECM opens or closes this
valve according to engine condition (Refer to below table).
Engine Cond ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Evaporator Temperature Sensor
- Description
The evaporator temperature sensor will detect the evaporator core
temperature and interrupt compressor relay power in order to prevent
evaporator from freezing by excessive cooling.
- Inspection
1.Turn the ignition switch ON.
2.Turn the A/C swicth ON.
3.Measure resist ...