engine SUBARU LEGACY 1996 Service Manual Online

3-2
[raB11]
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

8
.
Diagnostic
Chart
withSelect
Monitor

8
.
Diagnostic
Chart
with
Select
Monitor

B
:
LIST
OF
OUTPUT
MODES

1
.
FUNCTION
MODE

Mode
Contents
Abbr
.
Unit
Contents
of
display
Page

F00
Mode
display
--
AT
or
EGI
mode
(when
monitor
is
connected
.)
-

F01Battery
voltage
VBV
Battery
voltage
applied
to
control
unit
.
-

F02
Vehicle
speed
sensor
1
VSPi
m/h
Vehicle
speed
(miles/h)
sent
from
vehicle
speed
sensor
1
.
-

F03
Vehicle
speed
sensor
1
VSP1
km/h
Vehicle
speed
(km/h)sent
from
vehicle
speed
sensor
1
.
-

F04
Vehicle
speed
sensor
2
VSP2
m/h
Vehicle
speed
(miles/h)
sentfrom
vehicle
speed
sensor
2
.
-

F05
Vehicle
speed
sensor
2
VSP2
km/h
Vehicle
speed
(km/h)
sent
from
vehicle
speed
sensor
2
.
-

F06
Engine
speed
EREV
rpm
Engine
speed
sent
from
ECM
.
-

F07
ATF
temperature
sensor
ATFT
°F
ATF
temperature
(°F)
sent
from
ATF
temperature
sensor
.
-

F08
ATF
temperature
sensor
ATFT
°C
ATF
temperature
(°C)
sent
from
ATF
temperature
sensor
.
-

F09
Throttleposition
sensor
THV
V
Voltage
sent
from
throttle
position
sensor
.
15

F10
Gear
position
GEAR
-
Transmissiongear
position
-

F11Line
pressure
duty
PLDTY
%
Duty
ratio
flowing
through
duty
solenoid
A
.
16

F12
Lock-up
duty
LUDTY
%
Duty
ratio
flowing
through
duty
solenoid
B
.
17

F13
AWD
duty
4WDTY
%
Duty
ratio
flowing
through
duty
solenoid
C
.
18

F14
Throttle
position
sensor
power
supply
THVCC
VPower
supply
voltage
to
throttle
position
sensor
19

F15
Mass
air
flowsignal
l
AFM
V
Output
voltage
from
air
flow
sensor
19

14

AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL
[T810]
3-2
8
.
Diagnostic
Chart
with
Select
Monitor

THV
(F09)

4
.6V

B3M0383

Probable
cause
(if
outside"specifieddata")

1
1
.
Throttleposition
sensor

I:
MODE
F09

-
THROTTLE
POSITION
SENSOR
(THV)
-

CONDITION
:

"
Ignition
switch
ON
(with
engine
OFF)

"
Measure
voltage
while
operating
throttle
valve
from
a

fully
closed
position
to
a
fully
open
position
.

SPECIFIED
DATA
;

"
Fully
closed
position
:
0
.5±0
.2
V
"
Fully
open
position
:
4
.6±0
.3
V

"
From
fully
closed
to
fully
open
position
:

Voltage
mustsmoothlydecrease
.

"
Open
harness
:
5
.0±0
.3
V
"
Shorted
harness
:
0
.00
V

Check
performance
characteristics
ofthrottle
position
sensor
.
<
Ref
.
to
3-2
[T7L0]
.*2
>

OK

I
Check
TCM
and
replace
if
necessary
.

15

3-2
[rBKO1
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

8
.
Diagnostic
Chart
with
Select
Monitor

PLDTY
(F1
1)

50%

G3M0731

Probable
cause
(if
outside"specified
data")

1
.
Throttleposition
sensor

1
2
.
Vehicle
speed
sensor
1

1
3
.
Vehicle
speed
sensor
2

1
4
.
Engine
speed

1
5
.
ATF
temperature
sensor

6
.
Inhibitor
switch

K
:
MODE
F11

-
LINE
PRESSURE
DUTY
(PLDTY)
-

CONDITION
:

"
After
sufficient
warm-up

"
Ignition
ON
(engine
OFF)

"
N
range

SPECIFIED
DATA
:

"
Throttle
fully
closed
:
100%

"
Throttle
fully
open
:
15%
or
less

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

OK

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

I
Check
in
F04
mode
.
<
Ref
.
to
3-2
[T8FO]
.*1
>
f
OK

Check
in
F06
mode
.
<
Ref
.
to
3-2
[T8G0]
.*i
>

OK

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

Check
for
operation
.

OK

I
Check
TCM
and
replace
if
necessary
.

16

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

AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL
[Taoo]
3-2

8
.
Diagnostic
Chart
withSelect
Monitor

THVCC
(F14)

5
.2
V

83M0259

Probable
cause
(Item
outside
"specified
data")

1
1
.
Throttleposition
sensor
power
supply

N
:
MODE
F14

-
THROTTLE
POSITION
SENSOR
POWER

SUPPLY
(THVCC)
-

CONDITION
:

Ignition
switch
ON
(engine
OFF)

SPECIFIED
DATA
:

5
.12f0
.1
V
Check
throttle
sensor
line
.
<
Ref
.
to
3-2

[T7L0]
.*2
>
OK

AFM
(F15)

0
.6V

83M0370

Probable
cause
(if
outside
"specified
data")

1
.
Mass
air
flow
signal
Check
performance
characteristics
of
mass
air

flow
signal
.
.
to
3-2
[T7H0]
.*2>

OK

Check
TCM
and
replace
if
necessary
.

O
:
MODE
F15

-
MASS
AIR
FLOW
SIGNAL
(AFM)
-

CONDITION
:

"
Ignition
switch
ON
(engine
ON)

"N
range

Idling

SPECIFIED
DATA
:

Engine
warm-up
:
0
.5
-
1
.22
V

I
Check
TCM
and
replace
if
necessary
.

19

2-7
[T2A2]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

2
.
Electrical
Components
Location
2
.
Electrical
Components
Location

A
:
ENGINE

2
.
SENSOR

Fuel
level
sensor
~3
Fueltank
pressure
sensor

~2
Fuel
temperature
sensor
~4
Fuel
sub
level
sensor

r
B2M0921A

3

B2M0922A

B2M0946A

2-7
[reioi
ON-BOARD
DIAGNOSTICS
II
SYSTEM

8
.
Diagnostics
for
Engine
Starting
Failure

8
.
Diagnostics
for
Engine
Starting

Failure

I:
FUEL
PUMP
CIRCUIT
(2200
cc
AWD
EXCEPT
TAIWANMODEL)

811
Check
operating
sound
offuel
pump
.

812
Checkground
circuit
offuel
pump
.

I

__
813
Check
power
supply
to
fuel
pump
.
1

814
Check
harness
between
fuel
pump
and

fuel
pump
relay
connector
.

815
[
Check
fuel
pump
relay
.

816
Check
harness
between
ECM
and
fuel

pump
relay
connector
.

CAUTION
:

After
repair
or
replacement
of
faulty
parts,
conduct

CLEAR
MEMORY
and
INSPECTION
MODES
.

Ref
.
to
2-7
[T3D0]
and
[T3E0]
.*2
and
*4
>

4

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[rsi2]
2-7
8
.
Diagnostics
for
Engine
Starting
Failure

WIRING
DIAGRAM
:

Fuel
pump

M

R58
S
.M
.J
.

R67R46
R1
897

E

B84

ECM

Fuel
pump
relay

0

846

SBF-2

No
.16
~b---

862F45

884

9
10
1112
13141516
R58
R61B46

3132
333435363738
39
40
4142
43
44585960
6162
6364
6566
6768
6910
1
2
3
~1
]
M34
1
84
1
8
51
86
1
871
88
1
89
1
90
1
91
1
92
1
93
1
94
1
95
1
96
1
4
56~J

82M
1014

PUMpK

OPERATING
SOUND
OFFUEL
811
CHEC

R58

OBD0132A

Make
sure
that
fuel
pump
isin
operation
for
two
seconds

when
turning
ignition
switch
to
ON
.

CHECK
:
Does
fuel
pump
produce
operating
sound?

NOTE
:

Fuel
pump
operation
check
can
also
beexecuted
using

Subaru
Select
Monitor
(Function
mode
:
FD01)
.

For
the
procedure,
referto
"COMPULSORY
VALVE
OPER-
ATION
CHECK
MODE"
2-7
[T3F0]*4
.

,res
:
Check
fuel
injector
circuit
.
<
Ref
.
to
2-7

[T10Q0].*2
>

No
:
Go
to
step
812
.
1
812
CHECK
GROUND
CIRCUIT
OF
FUEL
PUMP
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
fuel
pump
.

3)
Measure
resistance
of
harness
connector
between
fuel

pump
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R58)
No
.
4
-
Chassis
ground
:

Is
the
resistance
less
than
5
S2?

5

2-7
trsi31
ON-BOARD
DIAGNOSTICS
II
SYSTEM

8
.
Diagnostics
for
Engine
Starting
Failure

R58
Bog

1
23
2
1
L

11

5
643

D

S2

B2M0526A

,rES
:
Go
to
step
813
.

No
:
Repair
open
circuit
in
fuel
pump
ground
circuit
.

813
I
CHECK
POWER
SUPPLY
TOFUEL
PUMP
.

1)
Turn
ignition
switch
to
ON
.

2)
Measure
voltage
of
power
supply
circuit
between
fuel

pump
connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R58)
No
.
1
(+)
-
Chassis
ground
(
)
:

Is
the
voltage
more
than10
V?

,rES
:
Replace
fuel
pump
.

No
:
Go
to
step
814
.

814
CHECK
HARNESS
BETWEEN
FUEL
PUMP

AND
FUEL
PUMP
RELAY
CONNECTOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Measure
resistance
of
harness
connector
between
fuel

pump
and
fuel
pump
relay
.

CHECK
:
Connector
&
terminal

(R58)
No
.
1
-
(B46)
No
.
4
:

Is
the
resistance
less
than
1
S2?

,rES
:
Go
to
next
CHECK

No
:
Repair
open
circuit
in
harness
between
fuel
pump

and
fuel
pump
relay
connector
.

CHECK
:
Connector
&
terminal

(R58)
No
.
1
-
Chassis
ground
:

Is
the
resistance
more
than
1
MS2?

,res
:
Go
to
step
815
.

No
:
Repair
short
circuit
in
harness
between
fuel
pump

and
fuel
pump
relay
connector
.

6

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[Tsisl
2-7

8
.
Diagnostics
for
Engine
Starting
Failure

815
1
CHECK
FUEL
PUMP
RELAY
.

1)
Disconnectconnectors
from
fuel
pump
relay
and
main

relay
.

2)
Remove
fuel
pump
relay
and
main
relay
with
bracket
.

3)
Connect
battery
to
fuel
pump
relay
connector
terminals

No
.
1
and
No
.
3
.

4)
Measure
resistance
between
connector
terminals
of

fuel
pump
relay
.

CHECK
;
Terminals

No
.
2
-
No
.
4
:

Is
the
resistance
less
than10
92?

YES
:
Go
tostep
816
.

No
:
Replace
fuel
pump
relay
.

816
CHECK
HARNESS
BETWEEN
ECM

FUEL
PUMP
RELAY
CONNECTOR
.

AND

1)
Disconnectconnectors
from
ECM
.

2)
Measure
resistanceof
harness
between
ECM
and
fuel

pump
relay
connector
.

CHECK
:
Connector
&
terminal

(B84)
No
.
32
-
(B46)
No
.
3
:

Is
the
resistance
less
than
1
0?

YES
.
Go
to
next
CHECK

No
:
Repair
harness
between
ECM
and
fuel
pump

relay
connector
.

CHECK
:
Is
there
poor
contact
in
ECM
connector?

vES
:
Repair
poor
contact
in
ECM
connector
.

No
:
Check
fuel
injector
circuit
.
<
Ref
.
to
2-7

[T8F0]
.*2
>

7