Hyundai Santa Fe (2006 year). Manual — part 23
AT -44
AUTOMATIC TRANSAXLE (F4A51)
No.
Condition
Operation
Judgment value
Check item
(2) 1st, (4) 3rd, (3)
2nd, (5) 4th
Shift condition
(2) 0%, (4) 100%,
(3) 100%, (5) 100%
Low and reverse
solenoid valve
(2) 0%, (4) 0%,
(3) 0%
Underdrive solenoid
valve
(1) 100%, (2) 0%,
(3) 100%
Second solenoid
valve
(2) 100%, (3) 100%,
(4) 0%
Overdrive solenoid
valve
(1) 0km/h
(4) 50km/h
Vehicle speed
sensor
(4) 1,800 ~
2,100rpm
Input shaft speed
sensor
6
Selector lever position
: N (Carry out on a flat
and straight road)
Selector lever position and
vehicle speed
1.
Idling in 1st gear (Vehicle stopped)
2.
Driving at constant speed of
20 km/h in 1st gear
3.
Driving at constant speed of
30 km/h in 2nd gear
4.
Driving at 50 km/h in 3rd gear
with accelerator fully closed
5.
Driving at constant speed of
50 km/h in 4th gear
(4) 1,800 ~
2,100rpm
Output shaft speed
sensor
Malfunction when
shifting
Displaced shift points
Does not shift
Does not shift from
1 to 2 or 2 to 1
Does not shift from
2 to 3 or 3 to 2
7
Selector lever position
: D (Carry out on a flat
and straight road)
• Accelerate to 4th gear at a
throttle position sensor output
of 1.5V (accelerator opening
angle of 30 %).
• Gently decelerate to a standstill.
• Accelerate to 4th gear at a
throttle position sensor output
of 2.5 V (accelerator opening
angle of 50%).
• While driving at 60 km/h in 4th
gear, shift down to 3rd gear.
• While driving at 40 km/h in 3rd
gear, shift down to 2nd gear.
• While driving at 20 km/h in 2nd
gear, shift down to 1st gear.
For (1), (2) and (3),
the reading should
be the same as
the specified output
shaft torque, and
no abnormal shocks
should occur.
For (4), (5) and (6),
downshifting should
occur immediately
after the shifting
operation is made.
Does not shift from
3 to 4 or 4 to 3
8
Selector lever position
: N (Carry out on a flat
and straight road)
Move selector lever to R range drive
at constant speed of 10km/h
The ratio between
input and output
shaft speed sensor
data should be
the same as the
gear ratio when
reversing.
Does not shift
AUTOMATIC TRANSAXLE SYSTEM
AT -45
TORQUE CONVERTER STALL TEST
This test measures the maximum engine speed when the
selector lever is in the D or R position. The torque con-
verter stalls to test the operation of the torque converter,
starter motor, one-way clutch operation, the holding per-
formance of the clutches, and brakes in the transaxle.
CAUTION
Do not let anybody stand in front of or behind the
vehicle while this test is being carried out
1.
Check the automatic transmission fluid level and tem-
perature, and the engine coolant temperature.
• Fluid level : At the HOT mark on the oil level
gauge
• Fluid temperature : 80~100 C (176~212 F)
• Engine
coolant
temperature
:
80~100 C(176~212 F)
2.
Prevent all the wheels from moving during the test.
3.
Pull the parking brake lever up, with the brake pedal
fully depressed.
4.
Start the engine.
5.
Move the selector lever to the "D" position, fully de-
press the accelerator pedal and take a reading of the
maximum engine speed at this time.
Stall speed : 2,100~2,900rpm
CAUTION
• The throttle should not be left fully open for
any more than five seconds.
• If carrying out the stall test two or more times,
move the selector lever to the "N" position
and run the engine at 1,000 r/min to let the au-
tomatic transaxle fluid cool down before car-
rying out subsequent tests.
6.
Move the selector lever to the "R" position and carry
out the same test again.
TORQUE CONVERTER STALL TEST CONCLUSION
1.
Stall speed is too high in both "D" and "R" ranges
• Low line pressure
• Low & reverse brake(B) slippage
2.
Stall speed is to high in "D" range only
• Underdrive clutch(C) slippage
3.
Stall speed is too high in "R" range only
• Reverse clutch(A) slippage
4.
Stall speed too low in both "D" and "R" ranges
• Malfunction of torque converter(D)
• Insufficient engine output
A
B
C
D
EKRF007F
AT -46
AUTOMATIC TRANSAXLE (F4A51)
HYDRAULIC PRESSURE TEST
1.
Warm up the engine until the automatic transaxle fluid
temperature is 80-100 C.
2.
Lift up the vehicle so that the wheels are free to turn.
3.
Connect the special tool (oil pressure gauge) to each
pressure discharge port.
4.
Measure the hydraulic pressure at each port under
the conditions given in the standard hydraulic pres-
sure table, and check that the measured values are
within the standard value ranges.
5.
If a value is outside the standard range, correct the
problem while referring to the hydraulic pressure test
diagnosis table.
2ND
UD
LR
Attach the
special tool
(09452-21001,
09452-21500)
EKRF007G
DA
DR
EKRF007H
RV
OD
EKRF007I
AUTOMATIC TRANSAXLE SYSTEM
AT -47
STANDARD HYDRAULIC PRESSURE TEST
Measurement condition
Standard hydraulic pressure kPa (psi)
Se-
lector
lever
posi-
tion
Shift
position
Engine
speed
(rpm)
Under
drive
clutch
pressure
Reverse
clutch
pressure
Overdrive
clutch
pressure
Low &
reverse
brake
pressure
Second
brake
pressure
Damper
clutch
Apply
pressure
(DA)
Damper
clutch
Release
pressure
(DR)
P
-
2,500
-
-
-
260-340
(38-50)
-
-
-
R
Reverse
2,500
-
1,270-
1,770
(185-256)
-
1,270-
1,770
(185-256)
-
-
-
N
-
2,500
-
-
-
260-340
(38-50)
-
-
-
1st gear
2,500
430-510
(62-74)
-
-
1,010-
1,050
(146-152)
-
-
-
2nd gear
2,500
430-510
(62-74)
-
-
-
430-510
(62-74)
-
-
3rd gear
2,500
430-510
(62-74)
-
430-510
(62-74)
-
-
More than
730 (100)
0-10
(0-1)
D
4th gear
2,500
-
-
430-510
(62-74)
-
780-880
(110-130)
More than
730 (100)
0-10
(0-1)
※ The values are subject to change according to vehicle
model or condition
※ Depress the acceleration pedal "GENTLY" under no
load when measuring the hydraulic pressure.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст