Kia Rio: Underdrive Brake Control Solenoid Valve(UD/B_VFS) 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" in this group)
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Underdrive Brake Control Solenoid Valve(UD/B_VFS) Inspection
Overdrive Clutch Control Solenoid Valve(OD/C_VFS) DescriptionUnderdrive Brake Control Solenoid Valve(UD/B_VFS) Description
Underdrive brake control solenoid valve(UD/B_VFS) is attached to the valve
body. This variable force solenoid valve directly controls the hydraulic pressure
inside the underdrive brake.
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Specification
Accelerator
Position
Output Voltage (V)
APS1
APS2
C.T
0.7 ~ 0.8
0.275 ~ 0.475
W.O.T
3.8 ~ 4.4
1.75 ~ 2.35 ...
Fuel Tank Removal
1.
Release the residual pressure in fuel line (Refer to the Fuel
Delivery System - Repair Procedures - "Release Residual Pressure in
Fuel Line").
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