Hyundai Santa Fe (TM): Hydraulic System - Automatic Transaxle System (SBC)Hyundai Santa Fe (TM): Hydraulic System

Description and operation

Description
The hydraulic system consists of a valve body, an oil filter and an oil pump.
The oil pump is powered by the engine. ATF passes through the oil filter and gets distributed along the oil channels.
The oil becomes highly pressurized as it exits the oil pump and passes through the line pressure valve before being fed to the clutch & brake control valve, clutch, and brakes.
TCM controls the hydraulic pressure using solenoid valves and controls clutch and brake operations.
Flow of the hydraulic system

Valve Body. Description and operation

Description
The valve body is essential to automatic transaxle control and consists of various valves used to control the oil feed from the oil pump. Specifically, these valves consist of pressure regulator valves, oil redirection valves, shift valves, and manual valves.
The body also features electronic solenoid valves that ensure smooth gear changes.

Valve Body. Components and components location

Components Location

1. Solenoid valve support bracket
2. Solenoid valve support bracket (Directly solenoid)
3. Line Pressure Control Solenoid Valve
4. Torque Convert Control Solenoid Valve (T/CON)
5. ON/OFF solenoid valve
6. Overdrive Clutch Control Solenoid Valve (OD/C)
7. Underdrive Brake Control Solenoid Valve (UD/B)
8. 35R Clutch Control Solenoid Valve (35R/C)
9. 26 Brake Control Solenoid Valve (26B)
10. LR/B pressure flow hole
11. UD/B pressure flow hole
12. Accumulator

Valve Body. Repair procedures

Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

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

  
Check for the looseness, poor connection, bending, corrosion, contamination, deterioration, or damage before reinstalling the solenoid valve connector.
8.
Loosen the mounting bolts and then removing the valve body assembly (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Installation
1.
To install, reverse the removal procedure.
  
Replace the gasket (A) before reinstalling the valve body cover.
2.
Check the ATF level after refilling the automatic transaxle with fluid.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid (ATF)" )
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
(Refer to Automatic Transaxle System - "Automatic Transaxle System" )
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
Reset the automatic transaxle adaptive values using the diagnostic tool.

5.
Perform the oil pressure characteristics input (A/T or valve body replacement) procedure.

6.
Record the bar code data (oil pressure characteristics) on the automatic transaxle case or valve body and then input it manually onto the diagnostic tool.

7.
Perform the TCM adaptive values learning procedure.
(Refer to Automatic Transaxle Control System - "Repair procedures")
8.
Be sure to check for leaks in each connection part when the engine is started.

Torque Converter Control Solenoid Valve (T/CON_VFS). Description and operation

Description
Torque converter control solenoid valve (T/CON_VFS) is attached to the valve body.
This variable force solenoid valve indirectly controls the hydraulic pressure inside the torque converter.

Torque Converter Control Solenoid Valve (T/CON_VFS). Components and components location

Component Location (1)_Valve Body Cover

1. Valve Body Cover
2. Valve Body Cover Gasket
3. Solenoid Valve Connector

Component Location (2)_Solenoid Valve

1. 26 Brake Control Solenoid Valve
2. 35R Clutch Control Solenoid Valve
3. Underdrive Brake Control Solenoid Valve
4. Overdrive Clutch Control Solenoid Valve
5. ON/OFF Solenoid Valve
6. Torque Converter Control Solenoid Valve (Damper Clutch Control Solenoid Valve)
7. Line Pressure Control Solenoid Valve
8. Support Bracket (Direct Control Solenoid Valve)
9. Support Bracket (Indirect Control Solenoid Valve)
10. Roller

Torque Converter Control Solenoid Valve (T/CON_VFS). Specifications

Specifications
▷ Control type : Normally low type
Shape
Items
Specifications

Control current [mA]
0 - 850
Supply pressure [kpa (kgf/cm², psi)]
539.36 (5.5, 78.23)
Control pressure [kpa (kgf/cm², psi)]
0-519.75 (0-5.3, 0-75.38)
 Internal resistance(Ω)
4.8 - 5.4

Torque Converter Control Solenoid Valve (T/CON_VFS). Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

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

8.
Loosen the bolts and then removing the support bracket (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb-ft)

9.
Remove the torque converter control solenoid valve (A).

Installation
1.
To install, reverse the removal procedure.
2.
Inject the automatic transaxle oil and inspect the oil level.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover
After installing the valve body cover, make sure to check the oil leakage at the connection area with the engine ON.
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
(Refer to Automatic Transaxle System - "Automatic Transaxle")
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
In order to prevent start delay and gear shift shock during acceleration and start, perform TCM learning after replacing the solenoid valve.
(Automatic Transaxle Control System - "Repair Procedures")

26 Brake Control Solenoid Valve (26/B_VFS). Description and operation

Description
26 brake control solenoid valve(26/B_VFS) is attached to the valve body.
This variable force solenoid valve directly controls the hydraulic pressure inside the 26Brake.

26 Brake Control Solenoid Valve (26/B_VFS). Components and components location

Component Location (1)_Valve Body Cover

1. Valve Body Cover
2. Valve Body Cover Gasket
3. Solenoid Valve Connector

Component Location (2)_Solenoid Valve

1. 26 Brake Control Solenoid Valve
2. 35R Clutch Control Solenoid Valve
3. Underdrive Brake Control Solenoid Valve
4. Overdrive Clutch Control Solenoid Valve
5. ON/OFF Solenoid Valve
6. Torque Converter Control Solenoid Valve (Damper Clutch Control Solenoid Valve)
7. Line Pressure Control Solenoid Valve
8. Support Bracket (Direct Control Solenoid Valve)
9. Support Bracket (Indirect Control Solenoid Valve)
10. Roller

26 Brake Control Solenoid Valve (26/B_VFS). Specifications

Specifications
▷ Control type : Normally low type
Shape
Items
Specifications

Control current [mA]
0 - 1100
Supply pressure [kpa (kgf/cm², psi)]
1569.06 (16, 227.57)
Control pressure [kpa (kgf/cm², psi)]
0 - 1569.06 (0 - 16, 0 - 227.57)
 Internal resistance(Ω)
5.0 - 5.6

26 Brake Control Solenoid Valve (26/B_VFS). Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

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

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

9.
Remove the roller (A) and bolt (B).
Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

10.
Remove the 26 brake control solenoid valve (A).

Installation
  
Note the value carefully and check the value again before assembly.
Inputting an invalid value (A) may cause the abnormal shifting shock while TCM learning.

1.
To install, reverse the removal procedure.
2.
Inject the automatic transaxle oil and inspect the oil level.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid (ATF)")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
After installing the valve body cover, make sure to check the oil leakage at the connection area with the engine ON.
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
Reset the automatic transaxle adaptive values using the diagnostic tool.

5.
Input the oil pressure characteristics using the diagnostic tool.
(1)
Select ‘Oil-pressure Characteristics (Solenoid Valve Replacement)’ in the S/W Management.

(2)
Select the replaced solenoid valve.

(3)
Check the code marked on the solenoid valve.
(※ Caution : Check the code at first before replacement)

(4)
If the code is inputted 2 times correctly, the procedure is completed.

6.
In order to prevent start delay and gear shift shock during acceleration and start, perform TCM learning after replacing the solenoid valve.
(Refer to Automatic Transaxle Control System - "Repair Procedures")

Line Pressure Control Solenoid Valve (LINE_VFS). Description and operation

Description
Line pressure control solenoid valve is attached to the valve body.
This variable force solenoid valve indirectly controls the hydraulic pressure inside the line pressure.

Line Pressure Control Solenoid Valve (LINE_VFS). Components and components location

Component Location (1)_Valve Body Cover

1. Valve Body Cover
2. Valve Body Cover Gasket
3. Solenoid Valve Connector

Component Location (2)_Solenoid Valve

1. 26 Brake Control Solenoid Valve
2. 35R Clutch Control Solenoid Valve
3. Underdrive Brake Control Solenoid Valve
4. Overdrive Clutch Control Solenoid Valve
5. ON/OFF Solenoid Valve
6. Torque Converter Control Solenoid Valve (Damper Clutch Control Solenoid Valve)
7. Line Pressure Control Solenoid Valve
8. Support Bracket (Direct Control Solenoid Valve)
9. Support Bracket (Indirect Control Solenoid Valve)
10. Roller

Line Pressure Control Solenoid Valve (LINE_VFS). Specifications

Specifications
▷ Control type : Normally high type
Shape
Items
Specifications

Control current [mA]
0 - 850
Supply pressure [kpa (kgf/cm², psi)]
539.36 (5.5, 78.23)
Control pressure [kpa (kgf/cm², psi)]
0 - 519.75 (0 - 5.3, 0 - 75.38)
 Internal resistance(Ω)
4.8 - 5.4

Line Pressure Control Solenoid Valve (LINE_VFS). Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

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

8.
Loosen the bolts and then removing the support bracket (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

9.
Remove the line pressure control solenoid valve (A).

Installation
1.
To install, reverse the removal procedure.
2.
Inject the automatic transaxle oil and inspect the oil level.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
After installing the valve body cover, make sure to check the oil leakage at the connection area with the engine ON
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
(Refer to Automatic Transaxle System - "Automatic Transaxle")
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
In order to prevent start delay and gear shift shock during acceleration and start, perform TCM learning after replacing the solenoid valve.
(Automatic Transaxle Control System - "Repair Procedures")

35R Clutch Control Solenoid Valve (35R/C_VFS). Description and operation

Description
35R Clutch control solenoid valve(35R/C) is attached to the valve body.
This variable force solenoid valve directly controls the hydraulic pressure inside the 35R clutch.

35R Clutch Control Solenoid Valve (35R/C_VFS). Components and components location

Component Location (1)_Valve Body Cover

1. Valve Body Cover
2. Valve Body Cover Gasket
3. Solenoid Valve Connector

Component Location (2)_Solenoid Valve

1. 26 Brake Control Solenoid Valve
2. 35R Clutch Control Solenoid Valve
3. Underdrive Brake Control Solenoid Valve
4. Overdrive Clutch Control Solenoid Valve
5. ON/OFF Solenoid Valve
6. Torque Converter Control Solenoid Valve (Damper Clutch Control Solenoid Valve)
7. Line Pressure Control Solenoid Valve
8. Support Bracket (Direct Control Solenoid Valve)
9. Support Bracket (Indirect Control Solenoid Valve)
10. Roller

35R Clutch Control Solenoid Valve (35R/C_VFS). Specifications

Specifications
▷ Control type : Normally low type
Shape
Items
Specifications

Control current [mA]
0 - 1100
Supply pressure [kpa (kgf/cm², psi)]
1569.06 (16, 227.57)
Control pressure [kpa (kgf/cm², psi)]
0 - 1569.06 (0 - 16, 0 - 227.57)
 Internal resistance(Ω)
5.0 - 5.6

35R Clutch Control Solenoid Valve (35R/C_VFS). Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A)

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

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

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

9.
Remove the roller (A) and bolt (B).
Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

10.
Remove the 35R clutch control solenoid valve (A).

Installation
  
Note the value carefully and check the value again before assembly
Inputting an invalid value (A) may cause the abnormal shifting shock while TCM learning.

1.
To install, reverse the removal procedure.
2.
Inject the automatic transaxle oil and inspect the oil level.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid (ATF)")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
After installing the valve body cover, make sure to check the oil leakage at the connection area with the engine ON.
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
Reset the automatic transaxle adaptive values using the diagnostic tool.

5.
Input the oil pressure characteristics using the diagnostic tool.
(1)
Select ‘Oil-pressure Characteristics (Solenoid Valve Replacement)’ in the S/W Management.

(2)
Select the replaced solenoid valve.

(3)
Check the code marked on the solenoid valve.
(※ Caution : Check the code at first before replacement)

(4)
If the code is inputted 2 times correctly, the procedure is completed.

6.
In order to prevent start delay and gear shift shock during acceleration and start, perform TCM learning after replacing the solenoid valve.
(Refer to Automatic Transaxle Control System - "Repair Procedures")

Underdrive Brake Control Solenoid Valve (UD/B_VFS). Description and operation

Description
Underdrive brake control solenoid valve(UD/B) is attached to the valve body.
This variable force solenoid valve directly controls the hydraulic pressure inside the underdrive brake.

Underdrive Brake Control Solenoid Valve (UD/B_VFS). Components and components location

Component Location (1)_Valve Body Cover

1. Valve Body Cover
2. Valve Body Cover Gasket
3. Solenoid Valve Connector

Component Location (2)_Solenoid Valve

1. 26 Brake Control Solenoid Valve
2. 35R Clutch Control Solenoid Valve
3. Underdrive Brake Control Solenoid Valve
4. Overdrive Clutch Control Solenoid Valve
5. ON/OFF Solenoid Valve
6. Torque Converter Control Solenoid Valve (Damper Clutch Control Solenoid Valve)
7. Line Pressure Control Solenoid Valve
8. Support Bracket (Direct Control Solenoid Valve)
9. Support Bracket (Indirect Control Solenoid Valve)
10. Roller

Underdrive Brake Control Solenoid Valve (UD/B_VFS). Specifications

Specifications
▷ Control type : Normally high type
Shape
Items
Specifications

Control current [mA]
0 - 1100
Supply pressure [kpa (kgf/cm², psi)]
1569.06 (16, 227.57)
Control pressure [kpa (kgf/cm², psi)]
0 - 1569.06 (0 - 16, 0 - 227.57)
 Internal resistance(Ω)
5.0 - 5.6

Underdrive Brake Control Solenoid Valve (UD/B_VFS). Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

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

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

9.
Remove the roller (A) and bolt (B).
Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

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

Installation
  
Note the value carefully and check the value again before assembly.
Inputting an invalid value (A) may cause the abnormal shifting shock while TCM learning.

1.
To install, reverse the removal procedure.
2.
Inject the automatic transaxle oil and inspect the oil level.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid (ATF)")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
After installing the valve body cover, make sure to check the oil leakage at the connection area with the engine ON
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
Reset the automatic transaxle adaptive values using the diagnostic tool.

5.
Input the oil pressure characteristics using the diagnostic tool.
(1)
Select ‘Oil-pressure Characteristics (Solenoid Valve Replacement)’ in the S/W Management.

(2)
Select the replaced solenoid valve.

(3)
Check the code marked on the solenoid valve.
(※ Caution : Check the code at first before replacement)

(4)
If the code is inputted 2 times correctly, the procedure is completed.

6.
In order to prevent start delay and gear shift shock during acceleration and start, perform TCM learning after replacing the solenoid valve.
(Refer to Automatic Transaxle Control System - "Repair Procedures")

Overdrive Clutch Control Solenoid Valve (OD/C_VFS). Description and operation

Description
Overdrive clutch control solenoid valve(OD/C_VFS) is attached to the valve body.
This variable force solenoid valve directly controls the hydraulic pressure inside the overdrive clutch.

Overdrive Clutch Control Solenoid Valve (OD/C_VFS). Components and components location

Component Location (1)_Valve Body Cover

1. Valve Body Cover
2. Valve Body Cover Gasket
3. Solenoid Valve Connector

Component Location (2)_Solenoid Valve

1. 26 Brake Control Solenoid Valve
2. 35R Clutch Control Solenoid Valve
3. Underdrive Brake Control Solenoid Valve
4. Overdrive Clutch Control Solenoid Valve
5. ON/OFF Solenoid Valve
6. Torque Converter Control Solenoid Valve (Damper Clutch Control Solenoid Valve)
7. Line Pressure Control Solenoid Valve
8. Support Bracket (Direct Control Solenoid Valve)
9. Support Bracket (Indirect Control Solenoid Valve)
10. Roller

Overdrive Clutch Control Solenoid Valve (OD/C_VFS). Specifications

Specifications
▷ Control type : Normally high type
Shape
Items
Specifications

Control current [mA]
0 - 1100
Supply pressure [kpa (kgf/cm², psi)]
1569.06 (16, 227.57)
Control pressure [kpa (kgf/cm², psi)]
0 - 1569.06 (0 - 16, 0 - 227.57)
 Internal resistance(Ω)
5.0 - 5.6

Overdrive Clutch Control Solenoid Valve (OD/C_VFS). Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

7.
Loosen the bolts and then removing the main harness (A).
Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

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

9.
Remove the roller (A) and bolt (B).
Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

10.
Remove the overdrive clutch control solenoid valve (A).

Installation
  
Note the value carefully and check the value again before assembly.
Inputting an invalid value (A) may cause the abnormal shifting shock while TCM learning.

1.
To install, reverse the removal procedure.
2.
Inject the automatic transaxle oil and inspect the oil level.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid (ATF)")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
After installing the valve body cover, make sure to check the oil leakage at the connection area with the engine ON.
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
Reset the automatic transaxle adaptive values using the diagnostic tool.

5.
Input the oil pressure characteristics using the diagnostic tool.
(1)
Select ‘Oil-pressure Characteristics (Solenoid Valve Replacement)’ in the S/W Management.

(2)
Select the replaced solenoid valve.

(3)
Check the code marked on the solenoid valve.
(※ Caution : Check the code at first before replacement)

(4)
If the code is inputted 2 times correctly, the procedure is completed.

6.
In order to prevent start delay and gear shift shock during acceleration and start, perform TCM learning after replacing the solenoid valve.
(Refer to Automatic Transaxle Control System - "Repair Procedures")

SS-A Solenoid Valve (ON/OFF). Description and operation

Description
SS-A solenoid valve is attached to the valve body and is an on/off solenoid valve that is used to change gears.
SS-A Solenoid valve(ON/OFF) is installed at valve body.

SS-A Solenoid Valve (ON/OFF). Components and components location

Component Location (1)_Valve Body Cover

1. Valve Body Cover
2. Valve Body Cover Gasket
3. Solenoid Valve Connector

Component Location (2)_Solenoid Valve

1. 26 Brake Control Solenoid Valve
2. 35R Clutch Control Solenoid Valve
3. Underdrive Brake Control Solenoid Valve
4. Overdrive Clutch Control Solenoid Valve
5. ON/OFF Solenoid Valve
6. Torque Converter Control Solenoid Valve (Damper Clutch Control Solenoid Valve)
7. Line Pressure Control Solenoid Valve
8. Support Bracket (Direct Control Solenoid Valve)
9. Support Bracket (Indirect Control Solenoid Valve)
10. Roller

SS-A Solenoid Valve (ON/OFF). Specifications

Specifications
▷ Control type : Normally low type
Shape
Items
Specifications

Control voltage [V]
9 - 16
Supply pressure [kpa (kgf/cm², psi)]
490.33 (5.0, 71.12)
Control pressure [kpa (kgf/cm², psi)]
0 - 490.33 (0 - 5.0, 0 - 71.12)
 Internal resistance(Ω)
10 - 11

SS-A Solenoid Valve (ON/OFF). Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
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.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
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.

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

8.
Loosen the support bracket mounting bolts (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb-ft)

9.
Remove the support bracket (A).

10.
Remove the ON/OFF solenoid valve (A).

Installation
1.
To install, reverse the removal procedure.
2.
Inject the automatic transaxle oil and inspect the oil level.
(Refer to Automatic Transaxle System - "Automatic Transaxle Fluid")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
After installing the valve body cover, make sure to check the oil leakage at the connection area with the engine ON.
3.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool.
(Refer to Automatic Transaxle System - "Automatic Transaxle")
  
Even though disconnecting the battery negative terminal, the DTCs will not be cleared. So, be sure to clear the DTCs using the diagnostic tool.
4.
In order to prevent start delay and gear shift shock during acceleration and start, perform TCM learning after replacing the solenoid valve.
(Automatic Transaxle Control System - "Repair Procedures")
Automatic Transaxle System
Automatic Transaxle. Repair procedures Removal    • Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle ...

Automatic Transaxle Cooling System
Description and operation Description • Engine coolant is used for circulating heat in order to heat and cool the transaxle oil. • Prevents over heating of the transaxle oil while the vehicle is moving. ...

See also:

Heated Description and Operation
Description Heated pads to grip the steering grip makes the fever. 1. Heated control unit 2. Heated pad Specifications Item Specification Voltage 13.5 V Heated pad resistance 1.4 ~ 1.8 Ω  ± ...

Interior Overview
1. Inside door handle 2. Power window switches 3. Power window lock button/Electronic child safety lock button 4. Side view mirror folding button 5. Side view mirror control switch 6. Central door lock ...

Yaw-rate and G Sensor. Repair procedures
Removal 1. Remove the ignition key from the vehicle. 2. Disconnect the battery negative cable and wait for at least three minutes before beginning work. 3. Remove the floor console. 4. Loosen the bolts ...