ABS SUBARU LEGACY 1996 Service Repair Manual

2-7
[T3C6]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

3
.
Diagnosis
System

6
.
READDATA
FUNCTION
KEY
LIST
FOR
ENGINE

Function
mode
Contents
Abbreviation
Unit
of
measure

F00
ROM
ID
number
YEAR
-

F01Battery
voltage
VB
V

F02
Vehicle
speed
signal
VSP
km/h,
MPH

F03Engine
speed
signal
EREV
rpm

F04Engine
coolant
temperature
signal
TW
°C,
°F

F05
Ignition
signal
ADVS
deg

F06
Mass
air
flow
signal
QA
g/s,
V

F07
Throttle
position
signal
THV
%,
V

FOS
Injector
pulse
width
TIM
ms

F09
Idle
air
control
signal
ISC
°/m

F10
Load
data
LOAD

F11
Front
oxygen
sensor
outputsignal
02
V

F12
Front
oxygen
sensor
maximum
and
minimum
output

signal
02max
-
min
V,
V

F13
Rear
oxygen
sensor
output
signal
R02
V

F14
Rear
oxygen
sensor
maximum
and
minimum
output

signal
R02max
-
min
V,
V

F17
Short
term
fuel
trim
ALPHA

F19
Knock
sensor
signal
KNOCK
deg

F20
Atmospheric
absolute
pressure
signal
BARD
.
P
kPa,
mmHg

F21
Intake
manifold
absolute
pressure
signal
MANi
.
P
kPa,
mmHg

F29
A/F
correction
(short
term
trim)
by
rear
oxygen
sensor
PHOS

F30
Longterm
fuel
trim
KBLRC

F31
Longterm
whole
fuel
trim
KO

F32
Front
oxygen
sensor
heater
current
F02H
A

F33
Rear
oxygen
sensor
heater
current
R02H
A

F36
Maximum
value
of
cylinder#1
misfire
times
during
100

rotations
MFi

F37
Maximum
value
of
cylinder
#2
misfire
times
during
100

rotations
MF2

F38
Maximum
value
of
cylinder
#3
misfire
times
during
100

rotations
MF3

F39
Maximum
value
of
cylinder
#4
misfire
times
during
100

rotations
MF4

F42
Maximum
and
minimum
EGR
system
pressure
value
EGRmax
-
minkPa

FAO
ON
H
OFF
signal
-
-

FA1
ON
~-->
OFF
signal
-
-

FA2
ON
H
OFF
signal
-
-

FA3
ON
H
OFF
signal
-
-

FA4
ON
H
OFF
signal
-
-

FA5
ON
H
OFF
signal
-
-

FBO
Diagnostic
trouble
code
(DTC)
INSPECT
-

18

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T3C6]
2-7
3
.
Diagnosis
System

Function
mode
Contents
Abbreviation
Unit
of
measure

FB1
Diagnostic
trouble
code
(DTC)
OBD
-

Load
data
(Freeze
frame
data)
LOAD-F

Engine
coolant
temperature
signal
(Freeze
frame
data)
TW-F
°C

Throttleposition
signal
(Freeze
frame
data)
ALPH-F

FB2
Long
term
fuel
trim
(Freeze
frame
data)
KBLR-F

Intake
manifoldabsolute
pressure
signal
(Freeze
frame

data)
MANI-F
kPa

Engine
speed
signal
(Freeze
frame
data)
EREV-F
rpm

Vehicle
speed
signal
(Freeze
frame
data)
VSP-F
km/h

Mass
air
flow
signal
(Freeze
frame
data)
QA-F
(P0100)
V

Pressure
signal
(Freeze
frame
data)
PS-F
(P0105)
V

Pressure
signal
(Freeze
frame
data)
PR-F
(P0106)
V

Engine
coolant
temperature
signal
(Freeze
frame
data)
TW-F
(P0115)
V

Throttleposition
signal
(Freeze
frame
data)
THV-F
(P0120)
V

17133
EGR
control
solenoid
valve
signal
(Freeze
frame
data)
EGR
(P0403)
-*1

Purge
control
solenoid
valve
signal
(Freeze
frame
data)
CPC
(P0443)
_*1

Start
switch
signal
(Freeze
frame
data)
STSW
(P1100)
_*1

Pressure
sources
switching
solenoid
valve
signal

(Freeze
frame
data)
gR1
(P1102)
_*1

Radiator
fanrelay
1
signal
(Freeze
frame
data)
FAN1
(P1500)
_*1

FCO
Clear
memory
-
-

FD01
Compulsory
fuel
pump
relay
operation
check
FUEL
PUMP
-

FD02
Compulsory
purge
control
solenoid
valveoperation

check
CPCSOL
-

FD03
Compulsory
radiator
fan
relay
operation
check
RAD
FAN
-

FD04
Compulsory
A/C
relay
operation
check
A/C
RELAY
-

FD05
Compulsory
EGR
control
solenoid
valve
operation

check
EGR
SOL
-

FD10
Compulsory
pressure
sources
switching
solenoid
valve

operation
check
BR
SOS
-

NOTE
:

1)
Subaru
select
monitor
is
also
available
for
monitoring

information
other
than
that
used
for
check
and
repair
of

the
vehicle
.

2)
F42
(Maximumandminimum
EGR
system
pressure

value)
will
not
read
accurately
until
the
EGR
flow
diagno-

sis
terminates
.

EGR
flow
diagnosis
terminates
when
LED
No
.
2
illuminates

at
function
mode
FA4
.

3)*1
:
"Hi"or
"Low"
is
shown
instead
of
measured
value
.

4)
Because
valve
is
not
installed,
FD06,
FD07,FD08,
FD09

and
FD11
will
be
displayed
but
non-functional
.

19

2-7
[T3C24]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

3
.
Diagnosis
System

BARO
.P
(F20)

1
0
OkPa752mmHg

82M0755

MAN
I
.
P
(F21)

2
9kPa218mmHg

82M0756

PHOS
(
F29
)

0
.78

B2M0494

KBLRC
(F30)

5
.5

B2M0495

KO
(F31
)

B2M0496

24
.
FUNCTION
MODE
:
F20

-
ATMOSPHERICABSOLUTE
PRESSURE
SIGNAL

(BARD
.
P)
-

*
Atmospheric
absolutepressure
is
indicated
in
"kPa"

and
"mmHg"
at
the
same
time
.

25
.
FUNCTION
MODE
:
F21

-
INTAKE
MANIFOLD
ABSOLUTE
PRESSURE
SIGNAL

(MANI
.
P)
-

e
Intake
manifoldabsolutepressure
is
indicated
in
"kPa"

and
"mmHg"
at
the
same
time
.

26
.
FUNCTION
MODE
:
F29

-
A/F
CORRECTION
COEFFICIENT
[SHORT
TERM

TRIM]
BY
REAR
OXYGENSENSOR
(PHOS)
-

27
.
FUNCTION
MODE
:
F30

-
LONGTERM
FUELTRIM
[A/F
LEARNING

CORRECTION
COEFFICIENT]
(KBLRC)
-

28
.
FUNCTION
MODE
:
F31

-
LONGTERM
FUEL
TRIM
WHOLE
[A/F
LEARNING

CONTROL
COEFFICIENT]
(KO)
-

24

ON-BOARD
DIAGNOSTICS
11
SYSTEM
[T3C45]
2-7

3
.
Diagnosis
System

43
.
FB
MODE
FOR
ENGINE

Function
mode
AbbreviationContentsContents
of
display
Page

On-board
diagnostics
Current
trouble
code
indicated
by

FBOINSPECT
(Inspection)
on-board
diagnostics
after
clear
mem-
[T3E1]*2

ory
.

FB1
OBD
On-board
diagnostics
Current
trouble
code
indicated
by
14
(Read
data)
on-board
diagnostics
.

LOAD-F
Load
data

TW-F
Engine
coolant
temper-

aturesignal

ALPH-F
Throttleposition
signal
*
Freeze
frame
data

FB2
KBLR-F
Long
term
fuel
trim
*
Data
stored
at
the
time
of
trouble
15

Intake
manifold
abso-
occurrence,
is
shownon
display
.
MANI-F
lute
pressure
signal

EREV-F
Engine
speed
signal

VSP-F
Vehicle
speed
signal

QA-F
(P0100)
Mass
air
flow
signal

PS-F
(P0105)
Pressure
signal

PR-F
(P0106)
Pressure
signal

TW-r
(P0115)
Engine
coolant
temper-

ature
signal

THV-F
(P0120)
Throttleposition
signal

EGR
(P0403)
EGR
control
solenoid
,
Freeze
frame
data

FB3
valve
signal
9
Data
stored
at
the
time
of
trouble16

CPC
(P0443)
Purge
control
solenoid
occurrence,
is
shown
on
display
.
valve
signal

STSW
(P1100)
Start
switch
signal

Pressure
sources

BR1
(P1102)
switching
solenoid

valve
signal

FAN1
(P1500)
Radiator
fan
relay
1

signal

44
.
FC
MODE
FOR
ENGINE

Function
mode
Abbreviation
ContentsContents
of
display
Page

FCO
MEMORY
CLR
Back-up
memory
clear
Function
of
clearing
trouble
code
[T3D1]*2
stored
in
memory
.

45
.
FD
MODE
FOR
ENGINE

Function
mode
Abbreviation
ContentsContents
of
display
Page

FD01
FUEL
PUMP

FD02
CPCSOL
Function
of
checking
operation
offuel

FD03
RAD
FAN
Compulsory
valve
pump
relay,
purge
control
solenoid

A/C
ll
di
tf
l
39
FD04
A/C
RELAY
operation
check
an
re
revave,
ra
a
or
ay,
ay,

EGR
control
solenoid
valve
and
pres-

FD05
EGR
SOL
sure
sources
switching
valve
.

FD10
BR
SOL

NOTE
:

Because
valve
is
not
installed,
FD06,
FD07,
FD08,
FD09
and
FD11
will
be
displayed
but
non-functional
.

31

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T3C61]
2-7

3
.
Diagnosis
System

LED
No
.
Signal
name
Display

1
FWD
switch
FF

2
Kick-down
switch
KD

3
-
-

4
-
-

5
Brake
switch
BR

6
ABS
switch
AB

7
Cruise
control
set
CR

8
Power
switch
PW

9
--
-

I
10
-
I
-

FF
KD
--
BR
ABCR
PW
--

10

LEDNo
.
Signal
name
Display

1
N/P
range
switch
NP

2
R
range
switch
RR

3
D
range
switch
RD

43
range
switch
R3

52
range
switch
R2

6
1
range
switch
R1

7
Diagnosis
switch
SS

s
--

s
-
-

10
-
-

NPRRRDR3
R2
R1
SS
---

oaaoo

0000
,o

60
.
FUNCTION
MODE
:
FAO

-
ON
H
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LED
No
.
1
Fuse
is
installed
in
FWD
switch
.

LED
No
.
2
Kick-down
switch
is
turned
ON
.
(Not

equipped)

LED
No
.
5
Brake
pedal
is
depressed
.

LED
No
.
6
ABS
signal
is
entered
.

LED
No
.
7
Cruise
control
is
set
.

LED
No
.
8
Power
switch
is
turned
ON
.
(Not
equipped)

61
.
FUNCTION
MODE
:
FA1

-
ON
H
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LED
No
.
1
"N"
or
"P"
range
is
selected
.

LED
No
.
2"R"
range
is
selected
.

LED
No
.
3
"D"
range
is
selected
.

LEDNo
.
4
"3"
range
is
selected
.

LEDNo
.
5
"2"
range
is
selected
.

LEDNo
.
6
"1"
range
is
selected
.

LEDNo
.
7
Diagnosis
connector
is
connected
.

37

3-2
[Two]
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

8
.
Diagnostic
Chart
withSelect
Monitor

4WDTY
(F13)

95%

G3M0733

Probable
cause
(if
outside
"specified
data")

1
.
Throttle
position
sensor

1
2
.
Vehicle
speed
sensor
1

1
3
.
Vehicle
speed
sensor
2

1
4
.
ATF
temperature
sensor

5
.
Inhibitor
switch

M
:
MODE
F13
-
AWD
DUTY
(4WDTY)
-

CONDITION
:

"
After
sufficient
warm-up

"
Ignition
switch
ON
(engine
OFF)

FWD
mode

"
AWD
mode,
D
range,
full
throttle

SPECIFIED
DATA
:

*
95%
(FWD
mode)

*
25%,
max
.
(vehicle
speed
0
m/h)
(AWD
mode)

Check
in
F09
mode
.
<
Ref
.
to
3-2
[T810]
.*2>

OK

Check
in
F02
mode
.
<
Ref
.
to
3-2
[TSEO].*1
>
OK

Check
in
F04
mode
.
<
Ref
.
to
3-2
(T8F0]
.*1
>

OK

Check
in
F07
mode
.
<
Ref
.
to
3-2
[T8H0]
.*i
>

OK

Check
for
operation
.

OK

1
6
.
ABS
signal
Check
ABS
system
for
operation
.

OK

I
Check
TCM
and
replace
if
necessary
.

18

3-2
[rsPO]
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

8
.
Diagnostic
Chart
with
Select
Monitor

DISPLAY

LEDNo
.
Signal
name
Symbol

1
FWD
switch
FF
2
Kick-down
switch
KD

3
--

4
--

5
Brake
BR

6
ABS
switch
AB

7
Cruise
control
set
CR

8
Power
switch
PW

9
-
-

10
t
-
--
I
-

FF
KDBR
ABCR
PW

DDDD
,o

DISPLAY
LEDNo
.
Signal
name
Symbol

1
N/P
range
switch
NP

2
R
range
switch
RR

3
D
range
switch
RD

43
range
switch
R3

5
2
range
switch
R2

6
1
range
switch
R1

7
Diagnosis
switch
SS

--

s
--

,o
_
1

-

NPRRRD
R3
R2
R1
SS

10

P
:
MODE
FAO

-
SWITCH
1
(SW1)
-

Reference
values

"
Lights
up
when
the
fuse
is
installed
in
FWD
switch
(No
.
1)
.

"
Lights
up
when
the
brake
pedal
is
depressed
(No
.
5)

"
Lights
up
when
the
ABS
signal
is
entered
(No
.
6)
.

"
Lights
up
when
the
cruise
control
is
set
(No
.
7)
.

NOTE
:

LED
Nos
.
2
and
8
do
not
come
on
.

Q
:
MODE
FA1

-
SWITCH
2
(SW2)
-

Reference
values

"
Lights
up
when
the
N
or
P
range
is
selected
(No
.
1)
.

"
Lights
up
when
the
R
range
is
selected
(No
.
2)
.

"
Lights
up
when
the
D
range
is
selected
(No
.
3)
.

"
Lights
up
when
the
3
range
is
selected
(No
.
4)
.

"
Lights
up
when
the
2
range
is
selected
(No
.
5)
.

"
Lights
up
when
the
1
range
is
selected
(No
.
6)
.

"
Lights
up
when
the
diagnosis
switch
is
connected

(No
.
7)
.

NOTE
:

If
each
LED
does
not
illuminate
in
the
above
conditions,

inhibitor
switch
malfunction
may
occur
.
Performdiagnos-

tics
on
inhibitor
switch
.
<
Ref
.
to
2-7
[T10AN0]
.*2
>

20

Condition Possible cause and testing Corrective action
4. Noisy
clutchExamine whether the noise is generated when the clutch is disengaged, engaged, or partially engaged.
(a) Broken, worn or unlubricated release bearing Replace release bearing.
(b) Insufficient lubrication of pilot bearing Apply grease.
(c) Loose clutch disc hub Replace clutch disc.
(d) Loose torsion spring retainer Replace clutch disc.
(e) Deteriorated or broken torsion spring Replace clutch disc.
5. Clutch
grabs.When starting the vehicle with the clutch partially engaged, the clutch engages suddenly and the vehicle jumps
instead of making a smooth start.
(a) Grease or oil on facing Replace clutch disc.
(b) Deteriorated cushioning spring Replace clutch disc.
(c) Worn or rusted spline of clutch disc or mainTake off rust, apply grease or replace clutch shaft disc or
mainshaft.
(d) Deteriorated or broken torsion spring Replace clutch disc.
(e) Loose engine mounting Retighten or replace mounting.
(f ) Deteriorated diaphragm spring Replace.
12
2-10DIAGNOSTICS
1. Clutch System

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. Brakes
A: SPECIFICATIONS
1. MODELS WITH ABS OR ABS/TCS
Model Sedan Wagon
Engine (cc) 2200 2200
Driving system FWD AWD FWD AWD
L+ L+ LS L+ L+ OUTBACK LS
Front
brakeType Disc (Floating type, ventilated)
Effective disc diameter
mm (in)210 (8.27)
Disc thickness x Outer
diameter
mm (in)24 x 260 (0.94 x 10.24)
Effective cylinder
diameter
mm (in)57.2 (2.252)
Pad dimensions
(length x width x
thickness)
mm (in)112.4 x 44.3 x 11.0 (4.43 x 1.744 x 0.433)
Clearance adjustment Automatic adjustment
Rear
brakeType Disc (Floating type)
Effective disc diameter
mm (in)230 (9.06)
Disc thickness x Outer
diameter
mm (in)10 x 266 (0.39 x 10.47)
Effective cylinder
diameter
mm (in)34.9 (1.374) 38.1 (1.500)
Pad dimensions
(length x width x
thickness)
mm (in)92.4 x 33.7 x 10.0 (3.638 x 1.327 x 0.394)
Clearance adjustment Automatic adjustment
2
4-4SPECIFICATIONS AND SERVICE DATA
1. Brakes