Kia Optima: Underdrive Brake Control Solenoid Valve(UD/B_VFS). Description and OperationDescription
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.

Removal
Underdrive Brake Control Solenoid Valve(UD/B_VFS). SpecificationsReassembly
1.
Reassemble the CD-rom drive to
the audio unit.
2.
Reassemble the top cover and
front panel.
...
Inspection
1.
Ignition "OFF"
2.
Disconnect ambient temperature
sensor.
3.
Check the resistance of ambient
temperature sensor between terminals 1 and 2 ...
Limp home (override) procedure
When you turn the ignition switch to the ON position, if the immobilizer indicator
() goes off after blinking 5 times, your
transponder equipped in the ignition key is out of order. You cannot sta ...