Hyundai Santa Fe (2006 year). Manual - part 56

AT -176

AUTOMATIC TRANSAXLE (F4A51)

VFS(VARIABLE FORCE
SOLENOID) VALVE

DESCRIPTION

E95DAC46

ACTUATORS

Solenoid Valve for Pressure Control

- Sensor type: Normal open 3-way
- Operating temperature : -30 C∼130 C(-22 F~266 F)
- Frequency:
LR, 2ND, UD, OD: 61.27Hz (at the ATF temp.

above

-20 C(-4 F))
DCC: 30.64Hz
- Internal resistance:
3.0 ± 0.5 Ω (LR, 2ND, UD, OD, TCC)
4.35 ± 0.5 Ω (VFS)
- Surge voltage: 56 V (Except VFS)

(VFS)

Control

Supply

Exhaust

EKRF082A

LOCATION

Overdrive
solenoid valve

Underdrive
solenoid valve

Second
solenoid valve

Damper clutch
solenoid valve
(Torque converter
clutch solenoid 
valve)

Low & reverse
solenoid valve

Oil temperature
sensor

VFS
solenoid valve

EKRF018K

AUTOMATIC TRANSAXLE CONTROL SYSTEM

AT -177

VFS CONTROL PRESSURE

Control Pressure (No line pressure)

Increasing Current

Decreasing Current

Input Current(mA)

MAX. (Kgf/ ㎠ )

［ Kpa］

MIN. (Kgf/ ㎠ )

［ Kpa］

△ (Kgf/㎠) ［Kpa］

MIN. (Kgf/ ㎠ )

［ Kpa］

100

6.52［639］

5.87［575］

［ 64 ］

200

6.23［611］

5.70［559］

［ 52 ］

5.43［532］

300

5.76［564］

5.24［514］

［ 50 ］

4.49［484］

400

5.08［498］

4.59［450］

［ 48 ］

4.30［421］

500

4.24［416］

3.78［370］

［ 46 ］

3.52［345］

700

2.29［224］

1.82［178］

［ 46 ］

1.51［148］

800

1.41［138］

0.09［88］

［ 50 ］

0.58［57］

900

0.65［ 64］

0.14［14］

［ 50 ］

0 ［ 0 ］

1,000

0.24［ 24］

0 ［ 0 ］

［ 24 ］

1,100

0.24［ 24］

0 ［ 0 ］

［ 24 ］

*Test condition:
Ps : Supply Pressure (Ps＝7.1 ± 0.3 KGf/㎠)
Pc : Control Pressure
Pex : Exhaust Pressure (Atmosphere pressure)
ATF : DIAMOND ATF SP-Ⅲ
ATF temperature : 30 ± 3 C (86 F)
- Coil resistance : 4.35 ± 35Ω
- Dither Frequency : 600 ± 20Hz
In case of VFS solenoid valve, the relation between Duty
and oil pressure can’t be expressed.

AT -178

AUTOMATIC TRANSAXLE (F4A51)

INSPECTION

E976C1C7

1.

If the value is out of specification according to the
chart below, remove the valve body cover.

Overdrive
solenoid valve

Underdrive
solenoid valve

Second
solenoid valve

Damper clutch
solenoid valve
(Torque converter
clutch solenoid 
valve)

Low & reverse
solenoid valve

Oil temperature
sensor

VFS
solenoid valve

EKRF011A

2.

Measure the resistance again after disconnecting so-
lenoid valve connector.

Specification (20 C):
4.3 ~ 4.4Ω (VFS)

1

2

EKRF011B

3.

If the value is out of specification replace the solenoid
valve.

Pin No.

Name

Resistance

7 ＆ 8

VFS

4.3~4.4Ω (20 C)

EKRF011C

AUTOMATIC TRANSAXLE CONTROL SYSTEM

AT -179

INPUT SPEED SENSOR

DESCRIPTION

E4C6DCFB

INPUT SHAFT SPEED SENSOR

- Type: Hall sensor
- Current consumption: 22mA (MAX.)
- Sensor body and sensor connector have been unified as
one.

Input shaft speed sensor

Output shaft speed sensor

Transfer driven gear 

UD clutch retainer

View A  

1 : Ground  
2 : Sensor signal  
3 : IG1 (B+)  

“A”

EKRF018A

HALL TYPE SENSOR: SPECIFICATION

Air gap (mm)

Input shaft speed sensor

1.3

Coil Resistance

Input shaft speed sensor

over 1MΩ

High

4.8~5.2V

Peak-Peak Voltage

Low

0.8V

WAVE FORM WITH HIGH-SCAN

1.0V

CH B

5.0V

CH A

HOLD

CURS

TRIG MXMN GRID CLR

0.5mS

EKRF018B