1996 SUBARU LEGACY fuel

ON-BOARD
DIAGNOSTICS
11
SYSTEM
[T10A0]
2-7

10
.
Diagnostics
Chart
with
Trouble
Code

DTC

No
.

Abbreviation

(Subaru
select
monitor)Item
Page

P0500
VSP
Vehicle
speed
sensor
malfunction
'1

P0505
ISC
Idle
control
system
malfunction
`1

P0506
ISC
-
L
Idle
control
system
RPM
lower
than
expected
'1

P0507
ISC
-
H
Idle
control
system
RPM
higher
than
expected
'1

P0600
-
Serial
communication
link
malfunction
`1

P0601
RAM
Internal
control
module
memory
check
sum
error
'1

P0703
ATBRK
Brake
switch
input
malfunction
'1

P0705
ATRNG
Transmissionrange
sensor
circuit
malfunction
`1

P0710
ATF
Transmission
fluid
temperature
sensor
circuit
malfunction
'1

P0720
ATVSP
Output
speed
sensor
(vehicle
speed
sensor
1)
circuit
malfunction
'1

P0725
ATNE
Engine
speed
input
circuit
malfunction
'1

P0731
ATGR1
Gear
1
incorrect
ratio

P0732
ATGR2
Gear
2
incorrect
ratio
"
1
P0733
ATGR3
Gear
3
incorrect
ratio

P0734
ATGR4
Gear
4
incorrect
ratio

P0740
ATLU
-
F
Torque
converter
clutch
system
malfunction
1

P0743
ATLU
Torque
converter
clutch
system
electrical
*1

P0748
ATPL
Pressure
control
solenoid
electrical
'1

P0753
ATSFTi
Shift
solenoid
A
electrical
`1

P0758
ATSFT2
Shift
solenoid
B
electrical
'1

P0760
ATOVR
-
F
Shift
solenoid
C
malfunction
'1

P0763
ATOVR
Shift
solenoid
C
electrical
'1

P1100
ST-SW
Starter
switch
circuit
malfunction
'1

P1101
N/P
-
SW
Neutral
position
switch
circuit
malfunction
[MT
vehicles]
'1

P1101
N/P
-
SW
Neutral
position
switch
circuit
malfunction
[AT
vehicles]
1

P1102
BR
Pressure
sources
switching
solenoid
valve
circuit
malfunction
'1

P1103
TRQ
Engine
torque
control
signal
circuit
malfunction
`1

P1400
PCVSOL
Fueltank
pressure
control
solenoid
valve
circuit
malfunction
38

P1401
PCV
-
FFueltank
pressure
control
system
function
problem
44

P1402
FIVL
Fuel
level
sensor
circuit
malfunction
46

P1500
FAN
-
1
Radiator
fan
relay
1
circuit
malfunction
'1

P1502
FAN
-
F
Radiator
fan
function
problem
'1

P1700
ATTH
Throttle
position
sensor
circuit
malfunction
for
automatic
transmission
'1

P1701
ATCRS
Cruise
control
set
signal
circuit
malfunction
for
automatic
transmission
'1

P1702
ATDIAG
Automatic
transmission
diagnosis
inputsignal
circuit
malfunction
'1

P0461'2
EXERR22
Fuel
level
sensor
circuit
range/performance
problem
56

"1
:
<
Ref
.
to
2-7
[T11A0]
.*4
>

'2
:
Only
OBD-II
general
scan
tool
displays
DTC
.

2-7
[T10BOa]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

10
.
Diagnostics
Chart
with
Trouble
Code

OBD
(FBI)

P0180


H2M1306

BO
:
DTC
P0180

-
FUEL
TEMPERATURE
SENSOR
A
CIRCUIT

MALFUNCTION
(TNKT)
-

DTC
DETECTING
CONDITION
:

e
Immediately
at
fault
recognition

10801
Connect
Subaru
Select
Monitor
or
the

OBD-11
general
scan
tool,
and
read
data
.

10802
Check
harness
between
fuel
temperature

sensor
and
ECM
connector
.

10B03
Check
harness
between
fuel
temperature

sensor
and
ECM
connector
.

CAUTION
:

After
repair
or
replacement
of
faultyparts,
conduct

CLEAR
MEMORY
and
INSPECTION
MODES
.

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

10

ON-BOARD
DIAGNOSTICS
II
SYSTEM
RIoBOOi
2-7
10
.
Diagnostics
Chart
with
Trouble
Code

WIRING
DIAGRAM
:

B84

ECM

(
,?22
9D

Q

IE

S
.M
.J
.

897
Rt
R15
R57

884
822

12
34
78
3
4
9
17118119120121122123124
25
261271281291301
1
A
?6
41147
52535455
56
57
9
01112
7
71

1

4
1
417576177
1
1
16

(~
Fueltank

:
:
:M[
:EjjFue1
temperature
ss
ensor

-M
FTM
r-,
.M
F112
3
RUSTUP
141516

B2M1015

11

2-7
[T10B01]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

10
.
Diagnostics
Chart
with
Trouble
Code

Data
link
connector
-
Subaru
select
monitor
and
BrD-11
general
scan
tool)

Data
link
connector
~(for
Subaru
select
monitor
~onlY)

\~V

82M1016A
I

TNKT
(F44)

20°C
68°F

H2M
1308

TNKT
(F44)

20°C
68°F

H2M1308

CONNECTSUBARU
SELECT
MONITOROR
10801
THE
OBD-II
GENERAL
SCAN
TOOL,
AND

READDATA
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
Subaru
Select
Monitor
or
the
OBD-II
general

scan
tool
to
data
link
connector
.

3)
Turn
ignition
switch
to
ON
and
Subaru
Select
Monitor

or
OBD-II
general
scan
tool
switch
to
ON
.

4)
Start
engine
.

5)
Read
data
onSubaru
Select
Monitor
or
OBD-II
general

scan
tool
.

*
Subaru
Select
Monitor

Designate
mode
using
function
key
.

Function
mode
:
F44

9
F44
:
Fuel
temperature
is
indicated
in
"°C"
and
"°F"

CHECK
:
Is
the
value
greater
than
150°C
or
300°F
in

function
mode
F44?

,rES
:
Go
to
step
10802
.

No
:
Go
to
next
CHECK
CHECK
;
Is
the
value
less
than
-40°C
or
-40°F
in
func-

tion
mode
F44?

,rss
:
Go
to
step
10803
.

No
:
Repair
poor
contact
.

NOTE
:

In
this
case,
repair
the
following
:

"
Poor
contact
in
fuel
pump
connector

"
Poor
contact
in
ECM
connector

"
Poor
contact
in
coupling
connector
(B22,
B97
and
R57

"
OBD-II
general
scan
tool

For
detailed
operation
procedures,
referto
the
OBD-

General
Scan
Tool
Instruction
Manual
.

12

II

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T10B02]
2-7

10
.
Diagnostics
Chart
with
Trouble
Code

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

I
Data
link
connector
(for
Subaru
select
monitor
only)

B2M1016A

TNKT
(F44)

20°C
68°F

H2M1308

CHECK
HARNESS
BETWEEN
FUELTEM-

10B02
pERATURE
SENSOR
AND
ECM
CONNEC-

TOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Remove
access
hole
lid
.

3)
Disconnect
connector
from
fuel
pump
.

4)
Connect
Subaru
Select
Monitor
or
the
OBD-II
general

scan
tool
to
data
link
connector
.

5)
Turn
ignition
switch
and
Subaru
Select
Monitor
or

OBD-II
general
scan
tool
switch
to
ON
.

6)
Read
data
onSubaru
Select
Monitor
or
the
OBD-II

general
scan
tool
.

9
Subaru
Select
Monitor

Designate
mode
using
function
key
.

Function
mode
:
F44

9
F44
:
Fuel
temperature
is
indicated
in
"°C"
and
"°F"
.

CHECK
:
Is
thevalue
less
than
-40°C
or
-40°F
in
func-

tion
mode
F44?

vES
:
Replace
fuel
temperature
sensor
.

No
:
Repair
short
circuit
in
harness
between
fuel
pump

and
ECM
connector
.

e
OBD-II
general
scan
tool

For
detailed
operation
procedures,
refer
to
the
OBD-

General
Scan
Tool
Instruction
Manual
.

13

I
I

2-7
RyoBOa1
ON-BOARD
DIAGNOSTICS
i1
SYSTEM

10
.
Diagnostics
Chart
with
Trouble
Code

R58

D

~,V
P

B2M0917A
I

R58

B2M0918A
I

CHECK
HARNESSBETWEEN
FUELTEM-
10B03
PERATURE
SENSOR
AND
ECM
CONNEC-

TOR
.

1)
Turn
ignition
switch
to
OFF
.

2)
Remove
access
hole
lid
.

3)
Disconnect
connector
from
fuel
pump
.

4)
Turn
ignition
switch
to
ON
.

5)
Measure
voltage
between
fuel
pump
connector
and

chassis
ground
.

CHECK
:
Connector
&
terminal

(R58)
No
.
6
(+)
-
Chassis
ground
(
)
:

Is
thevoltage
more
than4V?

YES
:
Go
to
next
step
6)
.

No
:
Repair
harness
and
connector
.

NOTE
:

In
this
case,
repair
the
following
:

*
Open
circuit
in
harness
between
ECM
and
fuel
pump

connector

"
Poor
contact
in
fuel
pump
connector

"
Poor
contact
in
ECM
connector

"
Poor
contact
in
coupling
connectors(B97
and
R57)

6)
Turn
ignition
switch
to
OFF
.

7)
Measure
resistance
of
harness
between
fuel
pump

connector
and
chassis
ground
.

CHECK
:
Connector
&
terminal

(R58)
No
.
5
-
Chassi

Is
the
resistance
less

,rES
:
Replace
fuel
temperatur

No
:
Repair
harness
andcon

NOTE
:

In
this
case,
repair
the
following

9
Open
circuit
in
harness
betw
e

connector

"
Poor
contact
in
fuel
pump
co

"
Poor
contact
in
ECM
connect

"
Poor
contact
in
coupling
co

R57)

14

s
ground
:

than5
S~?

e
sensor
.

nector
.

en
ECM
and
fuel
pump

nnector

or

nnectors
(B22,
B97
and

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

10
.
Diagnostics
Chart
with
Trouble
Code

OBD
(FBI)

P0181

H2M1350

BP
:
DTC
P0181

-
FUEL
TEMPERATURE
SENSOR
A
CIRCUIT

RANGE/PERFORMANCE
PROBLEM

(TN
KT
-
F)
-

DTC
DETECTINGCONDITION
:

Two
consecutive
trips
with
fault

10BP1
I
Check
DTC
P0180
on
display
.

CAUTION
:

After
repair
or
replacement
of
faultyparts,
conduct

CLEAR
MEMORY
and
INSPECTION
MODES
.

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

WIRING
DIAGRAM
:

884

ECM

301

S
.M
.J
.

B91
R1
R15R57R58
Fuel
tank

Fuel
temperature
===@H
sensor

884B22

1
U34
U5U
78
U
1
2
34
1711811912012112212312
51
1152211523112152511526113'
68
55
91
1451461471481491501
47
1
01112
1/11/21/31141151761//1781/91601811821631
193142116
U
1121
E
1
23
4
1
b
1
65
3-7
10
1
[49

B2M1015

16

ON-BOARD
DIAGNOSTICS
II
SYSTEM
(T10BP1]
2-7

10
.
Diagnostics
Chart
with
Trouble
Code

CHECK
DTC
P0180
ON
DISPLAY
.

CHECK
:
Does
the
Subaru
select
monitor
or
OBD-11

general
scan
tool
indicate
DTC
P0180?

,rES
:
Inspect
DTC
P0180
using
"10
.
Diagnostics
Chart

with
Trouble
Code
2-7
[T10A0]"*7
.

NOTE
:

In
this
case,
it
is
not
necessary
to
inspect
DTC
P0181
.

No
:
Replace
fuel
temperature
sensor
.

17