oil change SUBARU LEGACY 1996 Service Repair Manual

2-7
Rioo2]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
10
.
General
Diagnostics
Table

41
Problem
parts
,-
CI,
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0
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N
N
N
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LO
OO
O
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OC
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3
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a
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N

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a
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0d
N
0m
N
d
0
N
d0
N
>
~
n
"
C
a
j
d
N
d
N

.
mo
N
CC
O
U
L
dU
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d
d
m
G1
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0U
0V
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,

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Symptom
1
2
345678910
11
12131415161718
,
19
2021
22
23
.24
25
1
26
1
27
28
29Engine
brake
is
noteffected
when
select
lever
isin
"3"
or
"2"range
.

Engine
brake
is
noteffected
when
select""
lever
isin
1
range
.

Shift
characteristics
areerroneous
.
OOOOOO

No
lock-up
occurs
.
OOOO

Vehicle
cannotbe
set
in
"D"
range
power
OO
mode
.

"D"
range
power
mode
cannotbe
released
.
OOO

Parking
brake
is
not
effected
.
OO

Shift
lever
cannot
be
moved
or
is
hard
to
"
"
move
from
P
range
.

Select
lever
is
hard
to
move
.
OOOO

Select
lever
is
too
light
to
move
(unreason-
OO
able
resistance)
.
ATF
spurts
out
.

Differential
oil
spurtsout
.

Differential
oil
level
changes
excessively
.

Odor
is
producedfrom
oil
supply
pipe
.
OO
Shock
occurs
when
selectlever
is
moved
""
"
"
OOO
O
OO
from
1
2
range
.
to

Slippage
occurs
when
selectlever
is
moved
"""
"
OOOOOO
from
1
to
2
range
.

Shock
occurs
when
selectlever
is
moved
"
""
"
OOOOOO
from
2
to
3
range
.

Slippage
occurs
when
selectlever
is
moved
""
O
OO
OOO
from
"2to
"3
range
.

Shock
occurs
when
select
lever
is
moved
"
"""
OOOOOO
from
4
range
.
3
to

Slippage
occurs
when
selectlever
is
moved
"
"
0OOOOO
to
"4from
"3
range
.

Shock
occurs
when
select
lever
is
moved
""
0OOO
O
from"3
to"2
range
.

Shock
occurs
when
selectlever
is
moved
"
UOOOO
from
"D
to
"1"
range
.

Shock
occurs
when
selectlever
is
moved
"
"
OO
O
OO
to"1
from"2
range
.

Shock
occurs
when
accelerator
pedal
is
O
OOO
O
released
at
medium
speeds
.

Vibration
occurs
during
straight-forward
OO
operation
.

Select
leveeslips
out
ofposition
during
acceleration
or
while
driving
onrough
ter-
OOO
U
rain
.

Vibration
occurs
during
turns
(tight
corner
"
OOOOOOOOO
"braking
phenomenon)
.

Front
wheel
slippage
occursduring
standing
OOOOOOOOOOO
starts
.

Vehicle
is
not
set
in
FWD
mode
.
O
O
vOO

1
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7
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11T
21314
x
15
1
~
i
1819
~20
~
I
22226
272829

72

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T1002
2-7
10
.
General
Diagnostics
Table

3000
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r
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VO

o

O

c~
a
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.
m
~
22
r
Problem
parts

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C
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7

v

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y
Y
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dsE
C
T
o

O
C

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r

°

d

Y
G
Cc
OC
fC
~
cd
M
c
l0
d
m
a
a
L
r
~m
Y
l0
d>d
~
UU
],
U
),
yp
~
!C
r
~
L
y
~
1
"
~
0r
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CU
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~E
~
~
O
.m
0
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c
dy
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a

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41
L
m
Nd
IM
N
al

E7
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L

a

C
p~
N

>

~y
it
M3
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7
N
7
7
a

~yC
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Uaj
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a
7
U

a
7
U

6
.
>
d
C7
~
C
C
w
C

OD
p
UQO~
0
~O2m
3
J
OC
OOD
EO
4
.
V
Q>D
F~-
JJ
lL
Q
IL
QO
OI
W~Wd

30
31
32
133
134
35
36
3738
39
40
41
4243
4445
46
47
48
49
50
5152
53
54
5556
57
58
Symptom

Engine
brake
is
noteffected
when
select"lever
isin
"3or
"2"
range
.

U
Enginebrake
is
not
effected
when
select
lever
isin
"1"
range
.

Shift
characteristics
are
erroneous
.

OO
No
lock-up
occurs
.
Vehicle
cannot
be
set
in
"D"
range
power
mode
.

"D"
range
power
mode
cannot
be
released
.
O
Parking
brake
is
noteffected
.
Shift
lever
cannotbe
moved
or
is
hard
to
move
from
"P"
range
.
Select
levee
is
hard
to
move
.

Select
lever
is
too
light
to
move
(unreason-
able
resistance)
.

O
ATF
spurts
out
.
O
Differential
oil
spurts
out
.
O
O
Differential
oil
level
changes
excessively
.

O
OO
1
0
1
0OO
Odor
is
produced
from
oil
supply
pipe
.

OOQ
Shock
occurs
when
selectlever
is
moved
"""
from
1
to"2
range
.

Slippage
occurs
when
selectlever
is
moved
"
from
"1to
"2"
range
.

nvOO
Shock
occurs
when
select
lever
is
moved
"
"
"
"
from
2to3
range
.

OO
Slippage
occurs
when
selectlever
is
moved
""
from"2
to"3
range
.

OOOO
Shock
occurs
when
selectlever
is
moved
""
""
from3
to
4range
.

p
Slippage
occurs
when
select
lever
is
moved
"
from
"3"
to
"4
range
.

OO
O
Shock
occurs
when
selectlever
is
moved
"
"
""
from
2
range
.
3
to

Shock
occurs
when
selectlever
is
moved
"
"""
from
D
to
1
range
.

OO
Shock
occurs
when
selectlever
is
moved
""""
from
2
1
range
.
to

OO
Shock
occurs
when
accelerator
pedal
is
released
at
medium
speeds
.

O
O
Vibration
occurs
during
straight-forward
operation
.

Select
lever
slips
out
of
position
during
acceleration
or
while
driving
on
rough
ter-rain
.

Vibration
occurs
during
turns
(tight
corner
"
"
braking
phenomenon)
.

Front
wheel
slippage
occurs
during
standing
starts
.

Vehicle
is
not
set
in
FWD
mode
.

30313233
3435
36
~
37
-1
38
-
I
39
i
40
I
41
r
42
i
43
-1
44
1
45
-1
46
47~
I
48
-
49
I
T
50
~f
51
I
52
I
556
I
57
I
58
I
I

73

Automatic
transmis-
sionOil pumpType Variable-capacity type vane pump
Driving method Driven by engine
Number of vanes 9 pieces
Hydraulic
controlTypeElectronic/hydraulic control
[Four forward speed changes by
electrical signals of car speed and
accelerator (throttle) opening]
FluidDexron II or Dexron III type Automatic
transmission fluid
Fluid capacity2200 cc 7.9(8.4 US qt, 7.0 Imp qt)
2500 cc 9.5(10.0 US qt, 8.4 Imp qt)
LubricationLubrication system Forced feed lubrication with oil pump
OilAutomatic transmission fluid (above
mentioned.)
Cooling Cooling systemLiquid-cooled cooler incorporated in
radiator
HarnessInhibitor switch 12 poles
Transmission harnessFWD ... 11 poles
AWD ... 13 poles
TransferTransfer clutch Hydraulic multi-plate clutch
Clutch number of transfer clutchDrive plate &
driven plate5
Control method Electronic, hydraulic type
LubricantThe same Automatic Transmission
Fluid used in automatic transmission.
1st reduction gear ratio 1.000 (53/53)
Final
reductionFinal gear
ratioFront driveFWD 3.900 (39/10)
AWD2200 cc 4.111 (37/9)
2500 cc 4.444 (40/9)
Speedometer gear ratio2200 cc & 2500 cc 0.83 (19/23)
2500 cc OUTBACK 0.76 (19/25)
Lubrication oilAPI, GL-5
Oil
capacityFront drive 1.2(1.3 US qt, 1.1 Imp qt)
AT F
cooling
systemRadiation capacity 1.651 kW (1,420 kcal/h, 5,635 BTU/h)
3
3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

G3M0317
2. TEST METHODS
1) Temporarily attach the ST to a suitable place in the
driver’s compartment, remove the blind plug located in
front of the toe board and pass the hose of the ST to the
engine compartment.
ST 498575400 OIL PRESSURE GAUGE ASSY


1Pressure gauge hose


2Hole in toe board (blank cap hole)


3Brake pedal
G3M0869
2) Remove the test plug and install ST1 instead.
3) Connect ST1 with ST2.
ST1 498897200 OIL PRESSURE GAUGE ADAPTER
ST2 498575400 OIL PRESSURE GAUGE ASSY
4) Check for duty ratio changes by opening and closing
throttle valve using select monitor.
5) Check line pressure in accordance with the following
chart.
3. EVALUATION
NOTE:
Under no load:“D”
Under full load:“R”,“2”
(With engine running at stall speed)

Unit: kPa (kg/cm2, psi)
Line pressure
Duty ratio (%)“2”range“R”range“D”range
2200 cc 2500 cc
51,147—1,344
(11.7—13.1, 166—195)1,275—1,569
(13.0—16.0, 185—228)—
22——765—902
(7.8—9.2, 111—131)
100——235—481
(2.4—4.9, 34—70)392—490
(4.0—5.0, 57—71)
42
3-2SERVICE PROCEDURE
3. Performance Test

G3M0870
D: TRANSFER CLUTCH PRESSURE TEST
Check transfer clutch pressure in accordance with the fol-
lowing chart in the same manner as with line pressure.
ST 499897700 OIL PRESSURE ADAPTER SET
ST 498575400 OIL PRESSURE GAUGE ASSY
AWD mode:“D”range
FWD mode:“P”range, engine speed 2000 rpm
CAUTION:
Before setting in FWD mode, install spare fuse on FWD
mode switch.
Unit: kPa (kg/cm2, psi)
Duty ratio
(%)AWD mode FWD mode
5667—804
(6.8—8.2, 97—117)667—804
(6.8—8.2, 97—117)
40137—226
(1.4—2.3, 20—33)—
950
(0, 0)—
If oil pressure is not produced or if it does not change in the
AWD mode, the duty solenoid C or transfer valve assem-
bly may be malfunctioning. If oil pressure is produced in the
FWD mode, the problem is similar to that in the AWD
mode.
E: ROAD TEST
1. GENERAL
Road tests should be conducted to properly diagnose the
condition of the automatic transmission.
CAUTION:
When performing test, do not exceed posted speed
limit.
2. CHECKING FOR SHIFT PATTERNS
Check“kick-down”.
D range: 1st
←
→2nd←
→3rd←
→4th
3 range: 1st←
→2nd←
→3rd←4th
2 range: 2nd←3rd←4th
1 range: 1st←2nd←3rd←4th
3. CHECK FOR ENGINE BRAKE OPERATION
Engine brake operation:
D range→4th gear
3 range→3rd gear
2 range→2nd gear
1 range→1st gear
43
3-2SERVICE PROCEDURE
3. Performance Test

G3M0383
(2) Tighten four bolts to secure the roller bearing.
Tightening torque:
39±3 N⋅m (4.0±0.3 kg-m, 28.9±2.2 ft-lb)
G3M0883
(3) Install the oil pump housing assembly to the torque
converter clutch case, and secure evenly by tightening
four bolts.
Tightening torque:
41±3 N⋅m (4.2±0.3 kg-m, 30.4±2.2 ft-lb)
CAUTION:
Thoroughly remove the liquid gasket from the case
mating surface beforehand.
Use an old gasket or an aluminum washer so as not
to damage the mating surface of the housing.
G3M0384
(4) Rotate the drive pinion several times with ST1 and
ST2.
ST1 498937100 HOLDER
ST2 499787100 WRENCH
G3M0884
(5) Tighten the LH retainer until contact is felt while
rotating the shaft. Then loosen the RH retainer. Keep
tightening the LH retainer and loosening the RH
retainer until the pinion shaft can no longer be turned.
This is the“zero”state.
G3M0885
(6) After the“zero”state is established, back off the LH
retainer 3 notches and secure it with the lock plate.
Then back off the RH retainer and retighten until it
stops. Repeat this procedure several times. Tighten the
RH retainer 1-3/4 notches further. This sets the preload.
Finally, secure the retainer with its lock plate.
NOTE:
Turning the retainer by one tooth changes the backlash
about 0.05 mm (0.0020 in).
61
3-2SERVICE PROCEDURE
4. Overall Transmission

10. Power Steering Fluid
A: RECOMMENDED AIR BLEEDING AND
POWER STEERING FLUID
Recommended power steering fluid Manufacturer
ATF DEXRON II or ATF DEXRON IIEB.P.
CALTEX
CASTROL
MOBIL
SHELL
TEXACO
1) Feed the specified fluid with its level being about 5 cm
(2.0 in) lower than the mouth of tank.
2) Continue to turn steering wheel slowly from lock to lock
until bubbles stop appearing in the tank while keeping the
fluid at that level.
3) In case air is absorbed to deliver bubbles into piping
because the fluid level is lower, leave it about half an hour
and then do the step 2) all over again.
4) Start, and idle the engine.
5) Continue to turn steering wheel slowly from lock to lock
again until bubbles stop appearing in the tank while keep-
ing the fluid at that level.
It is normal that bubbles stop appearing after three times
turning of steering wheel.
6) In case bubbles do not stop appearing in the tank, leave
it about half an hour and then do the step 5) all over again.
7) Stop the engine, and take out safety stands after jack-
ing up vehicle again.
Then lower the vehicle, and idle the engine.
8) Continue to turn steering wheel from lock to lock until
bubbles stop appearing and change of the fluid level is
within 3 mm (0.12 in).
9) In case the following happens, leave it about half an
hour and then do step 8) again.
(1) The fluid level changes over 3 mm (0.12 in).
(2) Bubbles remain on the upper surface of the fluid.
(3) Grinding noise is generated from oil pump.
81
4-3SERVICE PROCEDURE
10. Power Steering Fluid

1. Safety Precautions
1. HFC-134a AIR CONDITIONING SYSTEM
Component parts of the cooling system, refrigerant, com-
pressor oil, and other parts are not the same for the HFC-
134a system and the older CFC-12 system. Do not inter-
change parts or liquid.
Vehicles with HFC-134a air conditioning systems, use only
HFC-134a parts that are indicated on a label attached to
the vehicle. Before performing any maintenance, verify the
type of air conditioning system installed in the vehicle.
B4M0780
2. COMPRESSOR OIL
Do not use any compressor oil that is not specifically des-
ignated for the HFC-134a air conditioning system; only use
ZXL200PG. Also, do not use HFC-134a compressor oil in
the CFC-12 air conditioning system. If compression oils are
mixed, poor lubrication will result and the compressor itself
may be damaged.
Because HFC-134a compressor oil is very hygroscopic
(easily absorbs moisture), when parts of the air condition-
ing system are being removed, quickly install a blind plug
to prevent contact with the outside air. Also, always make
sure that the service container for compressor oil is tightly
closed except when in use. Store compressor oil in a tightly
closed steel container.
9
4-7SERVICE PROCEDURE
1. Safety Precautions

3. Tools and Equipment
The following section provides information about the tools
and equipment that will be necessary to properly service
the A/C system.
Since equipment may vary slightly depending on the
manufacturer, it is important to always read and follow the
manufacturer’s instructions.
CAUTION:
When working on vehicles with the HFC-134a system,
only use HFC-134a specified tools and parts. Do not
mix with CFC-12 tools and parts. If HFC-134a and
CFC-12 refrigerant or compressor oil is mixed, poor
lubrication will result and the compressor itself may be
destroyed.
In order to help prevent mixing HFC-134a and CFC-12
parts and liquid, the tool and screw type and the type
of service valves used are different. The gas leak
detectors for the HFC-134a and CFC-12 systems must
also not be interchanged.
HFC-134a CFC-12
Tool & screw type Millimeter size Inch size
Valve type Quick joint type Screw-in type
Tools and Equipment Description
WRENCH
VariousWRENCHESwill be required to service any A/C
system. A 7 to 40 N⋅m (0.7 to 4.1 kg-m, 5 to 30 ft-lb) torque
wrench with various crowfoot wrenches will be needed. Open
end or flare nut wrenches will be needed for back-up on the
tube and hose fittings.
G4M0571
APPLICATOR BOTTLE
A smallAPPLICATOR BOTTLEis recommended to apply
refrigerant oil to the various parts. They can be obtained at a
hardware or drug store.
G4M0572
12
4-7SERVICE PROCEDURE
3. Tools and Equipment

Problem parts
Inhibitor switch
Control module
Vehicle speed sensor 1
Vehicle speed sensor 2
Select cable
Select lever
FWD switch
Starter motor and harness
Throttle position sensor
Hold switch
Accumulator (“N”—“D”)
Accumulator (2A)
Accumulator (4A)
Accumulator (3R)
ATF temperature sensor
Strainer
Duty solenoid A
Duty solenoid B
Shift solenoid 1
Shift solenoid 2
Shift solenoid 3
Control valve
Detent spring
Manual plate
Transfer clutch
Transfer valve
Transfer pipe
Duty solenoid C
Forward clutch
Symptom1234567891011121314151617181920212223242526272829
Engine brake is not effected when select
lever is in“3”or“2”range.
Engine brake is not effected when select
lever is in“1”range.
Shift characteristics are erroneous.  
No lock-up occurs.
Vehicle cannot be set in“D”range power
mode.
“D”range power mode cannot be released.
Parking brake is not effected.
Shift lever cannot be moved or is hard to
move from“P”range.
Select lever is hard to move. 
Select lever is too light to move (unreason-
able resistance).
ATF spurts out.
Differential oil spurts out.
Differential oil level changes excessively.
Odor is produced from oil supply pipe.
Shock occurs when select lever is moved
from“1”to“2”range.  
Slippage occurs when select lever is moved
from“1”to“2”range.  
Shock occurs when select lever is moved
from“2”to“3”range.
Slippage occurs when select lever is moved
from“2”to“3”range.
Shock occurs when select lever is moved
from“3”to“4”range.   
Slippage occurs when select lever is moved
from“3”to“4”range.   
Shock occurs when select lever is moved
from“3”to“2”range.
Shock occurs when select lever is moved
from“D”to“1”range.
Shock occurs when select lever is moved
from“2”to“1”range.
Shock occurs when accelerator pedal is
released at medium speeds.
Vibration occurs during straight-forward
operation.
Select lever slips out of position during
acceleration or while driving on rough terrain. 
Vibration occurs during turns (tight corner
“braking”phenomenon).    
Front wheel slippage occurs during standing
starts.      
Vehicle is not set in FWD mode. 
1234567891011121314151617181920212223242526272829
121
2-7ON-BOARD DIAGNOSTICS II SYSTEM
9. General Diagnostics Table