transmission SUBARU LEGACY 1996 Service Owner's Manual

3-2
rr7KO1
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

7
.
Diagnostic
Ch
art
with
Trouble
Code

K
:
TROUBLE
CODE
25

-
TORQUE
CONTROL
SIGNAL
-

DIAGNOSIS
:

"
Torque
control
signal
is
not
emitted
from
TCM
.

"
The
signal
circuit
is
open
or
shorted
.

1
.
Check
harness
connector
between
TCM
and
Not
OK
ECM
.

OK

I
Repair
or
replace
harness
connectors
.

2
.
Check
output
signal
for
TCM
.
J
OK

Not
OK

Repair
ECM
connector
terminal
poor
contact
.

Replace
ECM
.

1
9
Repair
TCM
connector
terminal
poor
contact
.

B84B55

ECM
79
F6TCM

B84

12u34
u
56
u
78
u

171819
20
2122
23242526
2128
2930
454647484950
5152
5354555657

7172
7374757677787980
8182
83

B55

12345678

1
9
1
10
1
1
11213141516

82M0598
I

8

AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL
[r7K2]
3-2
7
.
DiagnosticChart
with
Trouble
Code

1
23
4a
u
ss
u
7
s
u
1718
9
21
24
5
46
7
9v51
2
316
4
05
71
2
5
70
1
2
1

ggq
.
-jB55
n
r_1
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
1
1112131
1516

B3M0478A

1
.
CHECK
HARNESS
CONNECTOR
BETWEEN
TCM
AND
ECM
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connectors
from
TCM
and
ECM
.

3)
Measure
resistance
of
harness
connector
between

TCM
and
ECM
.

Connector
&
terminal
l
Specifiedresistance
:

(855)
No
.
16
-
(B84)
No
.
79
/
1
S2,
orless

4)
Measure
resistance
of
harness
connector
between

TCM
and
body
to
make
sure
that
circuit
does
not
short
.

Connector
&
terminal
I
Specifiedresistance
:

(855)
No
.
16
-
Body
l
1
1140,
or
more

2
.
CHECK
OUTPUT
SIGNAL
FOR
TCM
.

1)
Connect
connectors
to
TCM
and
ECM
.

2)
Turn
ignition
switch
to
ON
.

3)
Measure
signal
voltage
between
TCM
connector
termi-

nal
and
body
.

Connector
&
terminal
l
Specifiedvoltage
:

(855)
No
.
16
-
Body
l
5
f
1
V

9

3-2[T7L0]
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

7
.
Diagnostic
Chart
with
Trouble
Code

1
.
Check
harness
connector
between
TCM
and

throttle
position
sensor
.

OK

2
.
Check
throttle
position
sensor
.

OK

1
3
.
Check
input
signal
for
TCM
.

Not
OK

4
.
Check
power
supply
tothrottle
position

sensor
.

OK

9
Repair
TCM
connector
terminal
poor
contact
.

e
Replace
TCM
.

Not
OK
j
Repair
or
replace
harnessconnectors
.

Not
OK
Replace
throttle
position
sensor
.

OK
~
9
Repair
TCM
connector
terminal
poor
contact
.

-~j9
Replace
TCM
.

Not
OK
,1
Repair
or
replace
harnessconnectors
.

E13

884
B84

112
34
U
56
U
78
U
171819
20
212223
24252627
28
2930
454647
48
49
50515253
1
54
1
55
1
5657
7172
73
74
757677787980
8182
83

L
:
TROUBLE
CODE
31

-
THROTTLE
POSITION
SENSOR
-

DIAGNOSIS
:

Input
signal
circuit
ofthrottle
position
sensor
is
open
or

shorted
.

TROUBLE
SYMPTOM
:

Shift
point
too
high
or
too
low
;
engine
brake
not
effected

in
"3"
range
;
excessive
shift
shock
;
excessive
tight
corner

"braking"

~~B56a~B54
821
E13

1234
12345678910
123456
1314151617181920
789101112
5678
9101112
1
23
1112

B2M0613

10

AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL
[T7L3]
3-2

7
.
Diagnostic
Chart
with
Trouble
Code

t
23
E13

D

OBD0510A
I

B54

6
54
32
1
2
1
09
87

D

-V+

OBD0503A

Data
link
connector
(for
Subaru
select
monitor
and
OBD-II
general
scan
tool)

/
,
/
i
~
i
)
Data
link
connector
(for
Subaru
select
monitor

\
.only)

OBD0145AI

1
.
CHECK
HARNESS
CONNECTOR
BETWEEN
TCM

AND
THROTTLE
POSITION
SENSOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
TCM
and
throttle
position

sensor
.

3)
Measure
resistance
of
harness
connector
between

TCM
and
throttle
position
sensor
.

Connector
&
terminal
l
Specifiedresistance
:

(B54)
No
.
8
-
(E13)
No
.
2
l1
S2,
or
less

(B56)
No
.
19
-
(E13)
No
.
3
l
1
0,or
less

4)
Measure
resistance
of
harness
connector
between

TCM
and
body
to
make
sure
that
circuit
does
not
short
.

Connector
&
terminal
I
Specifiedresistance
:

(B54)
No
.
8
-
Body
l1
11492,
or
more

(B56)
No
.
19
-
Body
l1
MS2,
or
more

2
.
CHECK
THROTTLE
POSITION
SENSOR
.

Measure
resistance
between
throttle
position
sensor
ter-

minals
.

Terminals
/
Specified
resistance
:

(E13)
No
.
1
-
No
.
2
/
0
.3
-
0
.7
kS2

(Throttle
fully
closed
.)

3
-
6
kS2

(Throttle
fully
open
.)

(E13)
No
.
1
-
No
.
3
/
3
.5
-
6
.5
kS2

3
.
CHECK
INPUT
SIGNAL
FOR
TCM
.

1)
Connect
connectors
to
TCM
and
throttle
position
sen-

sor
.

2)
Turn
ignition
switch
ON
(with
engine
OFF)
.

3)
Measure
signal
voltage
input
emitted
from
throttle
posi-

tion
sensor
with
accelerator
pedal
fully
depressed
.

Connector
&
terminal
l
Specifiedvoltage
:

(B54)
No
.
8
-
No
.
7
/

0
.5
f
0
.2
V
(Throttle
fully
closed
.)

4
.6
f
0
.3
V
(Throttle
fully
open
.)

e
Using
Subaru
select
monitor
:

(1)
Connect
connectors
to
TCM
and
throttle
position

sensor
.

(2)
Turn
ignition
switch
to
OFF
.

(3)
Connect
the
Subaru
select
monitor
to
data
link

connector
.

(4)
Turn
ignition
switch
to
ON
andSubaru
select

monitor
switch
to
ON
.

11

3-2
[r7La]
AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL

7
.
Diagnostic
Chart
with
Trouble
Code

THV
(F09)

4
.6V

83M0383

E13

B3M0238A
I

Data
link
connector
(for
Subaru
select
monitor
and
OBD-II
general
scan
tool)

~l
i
a
I
nk
connector
Dat
(for
Subaru
select
monitor
only)

OBD0145A
I

THVCC
(F14)

S
.ZV

OBD0506

(5)
Designate
mode
using
function
key
.

(6)
Read
data
onSubaru
select
monitor
.

Function
mode
:
F09

SPECIFIED
DATA
:

0
.5
f
0
.2
V
(Throttle
fully
closed
.)

4
.6
f
0
.3
V
(Throttle
fully
open
.)

[Must
be
changed
correspondingly
with
accelera-

tor
pedal
operation
(from
"released"
to

"depressed"
position)
.]

4
.
CHECKPOWER
SUPPLY
TO
THROTTLE
POSITION

SENSOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
throttle
position
sensor
.

3)
Turn
ignition
switch
to
ON
.

4)
Measure
power
supply
voltage
to
throttle
position
sen-

sor
.

Connector
&
terminal
l
Specified
voltage
:

(E13)
No
.
1
-
Body
l
5
.12
±
0
.1
V

9
Using
Subaru
select
monitor
:

(1)
Turn
ignition
switch
to
OFF
.

(2)
Connect
the
Subaru
select

connector
.

(3)
Turn
ignition
switch
to
ON

monitor
switch
to
ON
.

monitor
to
data
link

and
Subaru
select

(4)
Designate
mode
using
function
key
.

(5)
Read
data
onSubaru
select
monitor
.

Function
mode
:
F14

SPECIFIED
DATA
:

5
.12
f
0
.1
V

12

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

AUTOMATIC
TRANSMISSION
AND
DIFFERENTIAL
[T8L0]
3-2

8
.
Diagnostic
Chart
with
SelectMonitor

LUDTY
(F12)

5%

G3M0732

L
:
MODE
F12
-
LOCK-UP
DUTY
(LUDTY)
-

CONDITION
:

Idling(after
sufficient
warm-up)
with
lock-up
system

released
.

"
Driving
at
75
km/h
(47
MPH)
(after
sufficient
warm-up)

with
lock-up
system
applied
.

SPECIFIED
DATA
:

"
Lock-up
system
released
;
5%

"
Lock-up
system
applied
:
95%

17

Probable
cause
(if
outside
"specified
data")

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