Hyundai Creta: Automatic Transaxle Control System / Underdrive Brake Control Solenoid Valve (UD/B_VFS)

Hyundai Creta GS 2014-2025 Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Underdrive Brake Control Solenoid Valve (UD/B_VFS)

Description and operation

Description

•	Underdrive brake control solenoid valve (UD/B) is attached to the valve body.

•	This variable force solenoid valve indirectly controls the hydraulic pressure inside the underdrive brake.

Specifications

Clutch/Brake control VFS [UD/B]

▷ Control type : Normally high type

Control Pressure [kpa (kgf/cm², psi)]	500.14 ~ 9.81 (5.1 ~ 0.1,72.54 ~ 1.42)
Current value (mA)	850 ~ 50
Internal resistance (Ω)	5.1

Schematic diagrams

Circuit Diagram

Repair procedures

Inspection

1.	Turn ignition switch OFF.

2.	Remove the battery and battery tray. (Refer to Engine Electrical System - "Battery")

3.	Disconnect the solenoid valve connector (A).

4.	Measure resistance between solenoid valve terminals.

Check that the resistance is within the specification.

•	If DTC about the Torque Converter Control Solenoid Valve is found, replace according to the procedures removal / installation.

Removal

Replacing an on/off solenoid valve (SS-A, SS-B) does not require additional hydraulic pressure adjustment; however, the hydraulic pressure will need to be adjusted after replacing the VFS solenoid valve. If replacing the VFS solenoid valve; also replace the valve body assembly.

(Refer to Valve Body System - "Valve Body")

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