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

Kia Sportage QL (2015-2019) Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Underdrive Brake Control Solenoid Valve (UD/B_VFS) Repair procedures

Inspection
1.
Switch "OFF" ignition.
2.
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
3.
Disconnect the solenoid valve connector (A).

4.
Measure the resistance between power terminal (5) and signal terminal (16).
Specification : 5.3 ± 0.3 Ω

Removal
  
Maintain clean condition so that foreign substance does not get into the automatic transaxle.
Use a coated apron, latex gloves, and stainless tray to prevent foreign substance from getting into the transaxle.
1.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover").
2.
Remove the ATF drain plug (A), allow the fluid to drain out and then reinstall the drain plug.
Tightening torque:
33.3 - 43.1 N·m (3.4 - 4.4 kgf·m, 24.6 - 31.8 lb·ft)

  
The existing ATF drain plug gasket must be replaced with a new one. (Do not reuse it.)
ATF can be reused. Collect it in a clean beaker.
3.
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
4.
Remove the wiring bracket (A) and the air breather hose (B).
Tightening torque:
9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

5.
Lift the vehicle after loosening valve body cover upper bolts.
6.
Remove the valve body cover (A) by loosening bolts.
Tightening torque:
11.8 - 13.7 N·m (1.2 - 1.4 kgf·m, 8.7 - 10.1 lb·ft)

7.
Remove the main harness module (A) after removing the bolts.
Tightening torque:
9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

8.
Remove solenoid valve support bracket (A) after loosening the bolts.
Tightening torque:
9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

9.
Remove the solenoid valve fixing pin (A) and loosen the valve body mounting bolt (B).
Tightening torque:
9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

10.
Remove the underdrive brake control solenoid valve (A).

Installation
1.
Install in the reverse order of removal.
  
Check the code (oil pressure characteristics value) at the first before installing the solenoid valve.

The existing valve body cover gasket (A) must be replaced with a new one. (Do not reuse it.)

2.
Perform the procedures below after installing.
(1)
Refill the automatic transaxle with fluid.
(Refer to Hydraulic System - "Fluid")
(2)
Clear the diagnostic trouble codes (DTC) using the KDS/GDS. Disconnecting the battery negative terminal will not clear the DTCs. Clear DTCs using the KDS/GDS at all times.
(3)
Reset the automatic transaxle adaptive values using the KDS/GDS.

(4)
Perform the oil pressure characteristics input procedure using the KDS/GDS.

(5)
Perform the TCM adaptive values learning procedure.
(Refer to Automatic Transaxle Control System - "Adjustment")
(6)
After installing, check for leakage of coolant or fluid from hose connection during engine start.
Underdrive Brake Control Solenoid Valve (UD/B_VFS) Schematic diagrams
Circuit Diagram ...

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