Kia Optima: Hydraulic System / Torque Converter Control Solenoid Valve (T/CON_VFS)
Specifications
Control type
|
N/L (Normal Low)
|
Control pressure kpa (kgf/cm², psi)
|
0 - 519.75 (0 - 5.3, 0 - 75.38)
|
Current (mA)
|
0 - 850
|
Coil resistance (Ω)
|
5.1 ± 0.3
|
Description and operation
| • |
Torque converter control solenoid valve is a Variable Force Solenoid
(VFS) type.
|
| • |
When TCM supplies variable current to solenoid valve, hydraulic pressure
of torque converter clutch is controlled by solenoid valve.
|
Components and components location
1. Valve Body Cover
|
8. SS-A ON/OFF Solenoid Valve
|
2. Valve Body Gasket
|
9. Torque Converter Control Solenoid
Valve
|
3. Main Harness
|
10. Line Pressure Control Solenoid
Valve
|
4. 26 Brake Control Solenoid
Valve
|
11. Support Bracket
|
5. 35R Clutch Control Solenoid
Valve
|
12. Support Bracket
|
6. Underdrive Brake Control Solenoid
Valve
|
|
7. Overdrive Clutch Control Solenoid
Valve
|
|
Repair procedures
| 1. |
The automatic transaxle system can be more quickly diagnosed for troubles
by using the vehicle diagnostic system (KDS). (Refer to "DTC guide")
KDS provides the following information
| (1) |
Self diagnosis : Inspects and displays diagnostic trouble code
(DTC)
|
| (2) |
Sensor data : Checks the system input/output value status
|
| (3) |
Forced operation : Checks the system operating status
|
| (4) |
Additional function : Controls system options, zero point adjustment
and other functions
|
|
| 1. |
Switch "OFF" ignition.
|
| 2. |
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "Air cleaner")
|
| 3. |
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
|
| 4. |
Disconnect the solenoid valve connector (A).
|
| 5. |
Measure the resistance between power terminal (10) and signal terminal
(2).
|
Specification : 5.1 ± 0.3 Ω
|
|
| • |
Automatic transaxle is composed of delicate components. Be careful
not to cause any damage on the component in the course of assembly
and disassembly.
|
| • |
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.)
|
| •
|
Automatic transaxle fluid (ATF) can be reused. Collect
it using a clean 10-liter beaker.
|
|
|
| 3. |
Remove the air duct and air cleaner assembly.
(Refer to Engine Mechanical System - "Air cleaner")
|
| 4. |
Remove the fixing clip (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. |
Separate the ATF cooler hose (A).
|
| 6. |
Lift the vehicle after loosening valve body cover upper bolts.
|
| 7. |
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)
|
| •
|
Replace the gasket (A) before reinstalling the valve
body cover.
|
| •
|
After the installation, start the engine and then check
if there are any leakages from the valve body cover.
|
|
|
| 8. |
Remove the main harness (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)
|
|
| 9. |
Remove solenoid valve support bracket (A) and then 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 torque converter control solenoid valve (A).
|
| 1. |
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.)
|
|
| 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. Disconnecting
the battery negative terminal will not clear the DTCs. Clear DTCs
using the KDS at all times.
|
| (3) |
Reset the automatic transaxle adaptive values using the KDS.
|
| (4) |
Check for leakage of coolant or fluid from hose connection during
engine start.
|
| (5) |
Perform the TCM adaptive values learning procedure.
(Refer to Automatic Transaxle Control System - "Adjustment")
|
|
Repair procedures
Removal
If ATF is leaking due to damage on O-ring, replace O-ring with a new
one.
(Refer to ...
Specifications
Specification
Item
Specification
Control type
N/L (Normal Low)
Control pressure (kpa (kgf/cm², ps ...
Other information:
1. Light control/Turn signals
2, Driver’s front air bag
3. Horn
4. Instrument cluster
5. Wiper and washer control lever
6. Ignition switch
Engine start/stop button
7. Cruise control
8. Passenger’s front air bag
9. Hazard warning flasher
10. Manual climate control system
Automatic cl ...
Schematic diagrams
Connector and Terminal Function
Repair procedures
Removal
When prying with a flat-tip screwdriver or use a prying trim tool, wrap
it with protective tape, and apply protective ...
Oil Pump
35R Clutch Control Solenoid Valve (35R/C_VFS)