Page 2045 of 2453

5AT-29
Road Test
AUTOMATIC TRANSMISSION
4. Road Test
A: INSPECTION
1. GENERAL PRECAUTION
Road tests should be conducted to properly diag-
nose the condition of automatic transmission.
NOTE:
When performing the test, do not exceed posted
speed limit.
2. D RANGE SHIFT FUNCTION
Check shifting between 1st ←→ 2nd ←→ 3rd ←→
4th ←→ 5th while driving on normal city streets.
3. D RANGE SHIFT SHOCK
Check the shock level when shifting up during nor-
mal driving.
4. KICK–DOWN FUNCTION
Check kick–down for each gear. Check the shock
level during kick–down at the same time.
5. ENGINE BRAKE OPERATION
•Check the 4th gear engine brake when shifting
down from 5th to 4th range while driving in 5th gear
of manual mode [50 to 60 km/h (31 to 37 MPH)].
•Check the 3rd gear engine brake when shifting
down from 4th to 3rd range while driving in 4th gear
of manual mode [50 — 60 km/h (31 — 37 MPH)].
•Check the 2nd gear engine brake when shifting
down from 3rd to 2nd range while driving in 3rd
gear of manual mode [40 — 50 km/h (25 — 31
MPH)].
•Check the 1st gear engine brake when shifting
down from 2nd to 1st range while driving in 2nd
gear of manual mode [20 — 30 km/h (12 — 19
MPH)].
6. P RANGE OPERATION
Stop the vehicle on an uphill grade of 5% or more
and shift to the “P” range. Check that the vehicle
does not move when the parking brake is released.
7. NOISE AND VIBRATION
Check for noise and vibration while driving and dur-
ing shifting.
8. OIL LEAKAGE
After the driving test, inspect for oil leaks from the
transmission body.
Page 2046 of 2453

5AT-30
Stall Test
AUTOMATIC TRANSMISSION
5. Stall Test
A: INSPECTION
NOTE:
The stall test is extremely important in diagnosing
the condition of an automatic transmission and en-
gine. It should be conducted to measure the engine
stall speeds in “R” and “2nd of manual mode”.
Purposes of the stall test:
•Operational check of the automatic transmission
clutch
•Operational check of the torque converter clutch
•Engine performance check
1) Check that the throttle valve fully opens.
2) Check that the engine oil level is correct.
3) Check that the coolant level is correct.
4) Check that the ATF level is correct.
5) Check that the differential gear oil level is cor-
rect.
6) Raise the ATF temperature to 70 to 80°C (158 to
176°F) by driving a distance of 5 to 10 km (3 to 6
miles). Confirm the ATF temperature on Subaru
Select Monitor.
RENT DATA, OPERATION, Subaru Select Moni-
tor.>
7) Place the wheel chocks at the front and rear of
all wheels and apply the parking brake.
8) Move the select lever to ensure it operates prop-
erly, and then set to the “2nd gear of manual
mode”.
9) While stepping hard on the brake pedal, gradu-
ally step on the accelerator pedal.
10) When the engine speed is stabilized, quickly
record the engine speed and release accelerator
pedal.
11) Shift the select lever to “N” range, and cool
down the engine by idling it for more than one
minute.
12) Perform the procedure for “R” range in the
same way as “2nd on manual mode”.
NOTE:
•Do not continue the stall test for MORE THAN
FIVE SECONDS at a time (from fully closed throttle
to fully open throttle until stall speed reading). Do-
ing so will make the engine oil and ATF deteriorate
and the clutch and brake to be adversely affected.
•After performing the stall test, be sure to cool
down the engine for at least one minute with the se-
lect lever set in “P” or “N” range, and at an idle
speed of 1,200 rpm or less.
•If the stall speed is higher than the specified
range, attempt to finish the stall test in as short a
time as possible, in order to prevent the automatic
transmission from sustaining damage.
Stall speed (at sea level):
2,300 — 2,800 rpm
AT-03297
Stall speed (at sea level) Range Possible faulty part
Below specified value R•Engine
•One-way clutch of torque converter clutch
Over specified value
2nd gear of manual
mode
•Line pressure too low
•Forward brake
•Forward brake one-way clutch
•Direct clutch
•3rd one-way clutch
R•Line pressure too low
•Reverse clutch
Page 2048 of 2453

5AT-32
Line Pressure Test
AUTOMATIC TRANSMISSION
7. Line Pressure Test
A: MEASUREMENT
NOTE:
If the clutch or brake shows a sign of slippage, or
shifting interval is not correct, check the line pres-
sure.
•Excessive shock during up-shift may be due to
the line pressure being too high.
•Slippage or inability to operate the vehicle may,
in most cases, be due to loss of oil pressure for the
operation of clutch, brake or control valve.
1) Set the vehicle on a lift.
2) Remove the under cover.
3) Remove the test plug and install the ST.
ST 498897200 OIL PRESSURE ADAPTER
4) Set the ST1 and ST2.
ST1 498897200 OIL PRESSURE ADAPTER
ST2 498575400 OIL PRESSURE GAUGE
5) Lower the vehicle, and pull ST1 and ST2 into the
vehicle.
ST1 498897200 OIL PRESSURE ADAPTER
ST2 498575400 OIL PRESSURE GAUGE
6) Connect the Subaru Select Monitor to the data
link connector and read the current data.
5AT(diag)-15, READ CURRENT DATA, OPERA-
TION, Subaru Select Monitor.>
7) Perform the line pressure test.
NOTE:
•Do not perform the line pressure test for more
than 5 seconds at a time. Doing so will make the
engine oil and ATF deteriorate and the clutch and
brake to be adversely affected.
•After performing the line pressure test, be sure to
cool down the engine for at least one minute with
the select lever set in “P” or “N” range and with the
idle speed at 1,200 rpm or less.
•Adjust the throttle valve angle in order to match
the “P/L Solenoid Pressure” displayed on the Sub-
aru Select Monitor.
AT-01752
Range of the
selector lever
Throttle opening
angle
AT F t e m p e r a t u r e
condition
“P/L Solenoid Pressure” dis-
played on the Subaru Select
Monitor
kPa
Standard line pressure
kPa (kg/cm2, psi)
D
Full closed
45 — 55°C
(104 — 131°F)
490385 — 555
(3.93 — 5.66, 55.8 — 80.5)
Full open 1,3701,235 — 1,475
(12.59 — 15.04, 179.1 — 213.9)
RFull closed 1,3701,530 — 1,925
(15.60 — 19.6, 221.9 — 279.2)
Page 2060 of 2453
5AT-44
Extension Case Oil Seal
AUTOMATIC TRANSMISSION
15) Pour ATF from the oil charge pipe.
Specified fluid:
SUBARU ATF (Part No. K0140Y0700)
Recommended fluid:
IDEMITSU ATF HP
CASTROL TRANSMAX J
PENNZOIL QUAKERSTATE • PENNZOIL ATF-
J
NOTE:
Use of the recommended fluid is permitted only in
regions where the specified fluid is not available.
Capacity:
Fill with the same amount of ATF as drained.
16) Check the level and leaks of the ATF.
5AT-26, Automatic Transmission Fluid.>
Page 2061 of 2453

5AT-45
Differential Side Retainer Oil Seal
AUTOMATIC TRANSMISSION
12.Differential Side Retainer Oil
Seal
A: INSPECTION
Check for leakage of gear oil from differential side
retainer oil seal part. If there is an oil leak, replace
the oil seal.
B: REPLACEMENT
1) Lift-up the vehicle.
2) Remove the front exhaust pipe.
EX(H6DO)-4, REMOVAL, Front Exhaust Pipe.>
3) Remove the differential gear oil drain plug using
TORX® BIT T70, and then drain differential gear
oil.
CAUTION:
•Immediately after the vehicle has been run-
ning or after idling for a long time, the differen-
tial gear oil will be hot. Be careful not to burn
yourself.
•Be careful not to spill the differential gear oil
on exhaust pipe to prevent it from emitting
smoke or fire. If differential gear oil is spilled on
the exhaust pipe, wipe it off completely.
4) Tighten the differential gear oil drain plug.
NOTE:
Use a new gasket.
Tightening torque:
70 N·m (7.1 kgf-m, 51.6 ft-lb)
5) Separate the front drive shaft from the transmis-
sion.
Shaft.>
6) Remove the differential side retainer oil seal us-
ing driver wrapped with vinyl tape etc.
7) Using the ST, install the differential side retainer
oil seal by lightly tapping with a hammer.
ST 18675AA000 DIFFERENTIAL SIDE OIL
SEAL INSTALLER
8) Apply oil to the oil seal lips.
9) Install the front drive shaft.
STALLATION, Front Drive Shaft.>
10) Install the front exhaust pipe.
EX(H6DO)-5, INSTALLATION, Front Exhaust
Pipe.>
11) Lower the vehicle.
12) Pour gear oil into the gauge hole.
Recommended gear oil:
SPECIFICATION, General Description.>
Gear oil capacity:
1.3 — 1.5 2 ( 1 . 4 — 1 . 6 U S q t , 1 . 1 — 1 . 3 I m p q t )
13) Check the level of differential gear oil.
5AT-28, INSPECTION, Differential Gear Oil.>
(A) Oil pan
(B) Differential gear oil drain plug
(B)
AT-01362
(A)
AT-00029
ST
Page 2064 of 2453
5AT-48
Front Vehicle Speed Sensor
AUTOMATIC TRANSMISSION
6) Install the extension case.
Tightening torque:
25 N·m (2.5 kgf-m, 18 ft-lb)
7) Install the rear vehicle speed sensor.
Tightening torque:
7 N·m (0.7 kgf-m, 5.2 ft-lb)
8) Install the transmission assembly to the vehicle.
Transmission Assembly.>
9) Pour ATF from the oil charge pipe.
26, REPLACEMENT, Automatic Transmission Flu-
id.>
10) Check the level and leaks of ATF.
26, INSPECTION, Automatic Transmission Fluid.>
AT-03226
AT-03225
Page 2067 of 2453

5AT-51
Rear Vehicle Speed Sensor
AUTOMATIC TRANSMISSION
7) Install the rear vehicle speed sensor and turbine
speed sensor 1, and then fasten the harness.
Tightening torque:
7 N·m (0.7 kgf-m, 5.2 ft-lb)
8) Install a new aluminum washer and oil cooler
pipe.
Tightening torque:
40 N·m (4.1 kgf-m, 29.5 ft-lb) (ATF inlet pipe)
45 N·m (4.6 kgf-m, 33.2 ft-lb) (ATF outlet pipe)
9) Install the oil charge pipe.
STALLATION, Oil Charge Pipe.>
10) Install the transmission rear crossmember bolt.
Tightening torque:
70 N·m (7.1 kgf-m, 51.6 ft-lb)
11) Install the propeller shaft.
STALLATION, Propeller Shaft.>
12) Install the heat shield cover.
13) Install the rear exhaust pipe and muffler.
to EX(H6DO)-7, INSTALLATION, Rear Exhaust
Pipe.>
Muffler.>
14) Lower the vehicle.
15) Install the transmission connector to the stay,
and then connect the connector.
16) Install the air intake chamber.
IN(H6DO)-6, INSTALLATION, Air Intake Cham-
ber.>
17) Pour ATF from the oil charge pipe.
5AT-26, REPLACEMENT, Automatic Transmis-
sion Fluid.>
18) Check the level and leaks of ATF.
26, INSPECTION, Automatic Transmission Fluid.>
Page 2069 of 2453

5AT-53
Control Valve Body
AUTOMATIC TRANSMISSION
17.Control Valve Body
A: REMOVAL
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Lift-up the vehicle.
4) Clean the transmission exterior.
5) Remove the ATF drain plug to drain ATF.
CAUTION:
Immediately after the vehicle has been running
or after idling for a long time, the ATF will be
hot. Be careful not to burn yourself.
6) Tighten the ATF drain plug.
NOTE:
Use a new gasket.
Tightening torque:
20 N·m (2.0 kgf-m, 14.8 ft-lb)
7) Remove the oil pan.
CAUTION:
Be sure to prevent the entering of dust and oth-
er foreign matters into oil pan.
8) Remove the magnet.
9) Clean the magnet.
10) Completely remove the remaining liquid gasket
on the transmission case and oil pan.
11) Disconnect the control valve connector and
front vehicle speed sensor connector.
12) Remove the control valve body.
NOTE:
The control valve body is replaced as an assembly
only, because it is a non-disassembly part.
B: INSTALLATION
1) Check the control valve body for dust and other
foreign matter.
2) Install the control valve body to transmission by
equally tightening the bolts.
Tightening torque:
8 N·m (0.8 kgf-m, 5.8 ft-lb)
3) Connect the control valve connector.
(A) Control valve connector
(B) Front vehicle speed sensor connector
AT-01959
AT-01956
(B)
(A)
(1) 58 mm (2.28 in)
(2) 65 mm (2.56 in)
(A) Control valve connector
(B) Front vehicle speed sensor connector
AT-01957
AT-01958
(1)(1)
(1)
(2)
(2)
(2)
(2)
(1)
(1)
(1)
(1)
(1)
(2)
AT-01956
(B)
(A)