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

Kia Carens RP (2013-2018) 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 air cleaner assembly. (Refer to Engine Mechanical System - "Air Cleaner")

3.	Disconnect the solenoid valve connector (A).

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

Specification : 5.1 ± 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")

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 air cleaner assembly. (Refer to Engine Mechanical System - "Air Cleaner")

Remove the 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.

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)

Remove the solenoid valve harness (A) and oil temperature sensor (B) after removing the bolts.

Tightening torque:

9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

Remove solenoid valve support bracket (A).

Tightening torque:

9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

Remove the underdrive brake control solenoid valve (B) after loosening a vlave body mounting bolt (A).

Tightening torque:

9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

Installation

Install in the reverse order of removal.

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

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 TCM adaptive values learning procedure. (Refer to Automatic Transaxle Control System - "Adjustment")

(5)	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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