Kia Cadenza: Automatic Transaxle Control System / Underdrive Brake Control Solenoid Valve(UD/B_VFS) Repair procedures

Kia Cadenza YG 2016-2025 Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Underdrive Brake Control Solenoid Valve(UD/B_VFS) 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).

Measure the resistance between power terminal (5) and signal terminal (16).

Specification : 5.1 ± 0.3 Ω

Replacement

If a solenoid valve of VFS type needs to be replaced, the valve body assembly should be replaced and the oil pressure should be adjusted. If the solenoid valve is replaced individually, it is not possible to adjust the oil pressure without additional equipment, and if the oil pressure adjustment procedure is not performed, a shift shock or delay may occur.

1.	Replace the valve body assembly. (Refer to Hydraulic System - "Valve Body")

Underdrive Brake Control Solenoid Valve(UD/B_VFS) Schematic Diagrams

Circuit Diagram ...

Overdrive Clutch Control Solenoid Valve(OD/C_VFS) Specifications

Specification Item SpecificationControl typeN/H (Normal High)Control pressure kpa (kgf/cm², psi)"500.14 ~ 9.81 (5.1 ~ 0.1, 72.54 ~ 1.42)"Current value (mA)50 ~ 850Coil resistance(Ω)5.1 ± 0.3 ...

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