Page 217 of 2890

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
Page 218 of 2890

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
Page 219 of 2890
![SUBARU LEGACY 1996 Service Repair Manual 2_7
[T10A0]
ON-BOARD
DIAGNOSTICS
11
SYSTEM
10
.
Diagnostics
Chart
with
Trouble
Code
10
.
Diagnostics
Chart
with
Trouble
Code
A
:
DIAGNOSTIC
TROUBLE
CODE
(DTC)
LIST
DTC
No
.
Abbreviation
(Subaru
SUBARU LEGACY 1996 Service Repair Manual 2_7
[T10A0]
ON-BOARD
DIAGNOSTICS
11
SYSTEM
10
.
Diagnostics
Chart
with
Trouble
Code
10
.
Diagnostics
Chart
with
Trouble
Code
A
:
DIAGNOSTIC
TROUBLE
CODE
(DTC)
LIST
DTC
No
.
Abbreviation
(Subaru](/manual-img/17/57433/w960_57433-218.png)
2_7
[T10A0]
ON-BOARD
DIAGNOSTICS
11
SYSTEM
10
.
Diagnostics
Chart
with
Trouble
Code
10
.
Diagnostics
Chart
with
Trouble
Code
A
:
DIAGNOSTIC
TROUBLE
CODE
(DTC)
LIST
DTC
No
.
Abbreviation
(Subaru
select
monitor)Item
Page
P0100
QA
Mass
air
flow
sensor
circuit
malfunction
'1
P0101
QA
-
R
Mass
air
flow
sensor
circuit
range/performance
problem
`1
P0105
P
-
S
Pressure
sensor
circuit
malfunction
*1
P0106
PS
-
R
Pressure
sensor
circuit
range/performance
problem
*1
P0115
TW
Engine
coolant
temperature
sensor
circuit
malfunction
'1
P0120
THV
Throttle
position
sensor
circuit
malfunction
'1
P0121
TH
-
R
Throttle
position
sensor
circuit
range/performance
problem
'1
P0125
TW
-
CL
Insufficient
coolant
temperature
for
closed
loop
fuel
control
'1
P0130
F02
-
V
Front
oxygen
sensor
circuit
malfunction
*1
P0133
F02
-
R
Front
oxygen
sensor
circuit
slowresponse
'1
P0135
F02H
Front
oxygen
sensor
heater
circuit
malfunction
*1
P0136
R02
-
V
Rear
oxygen
sensor
circuit
malfunction
'1
P0139
R02
-
R
Rear
oxygen
sensor
circuit
slowresponse
*1
P0141
R02H
Rear
oxygen
sensor
heater
circuit
malfunction
*1
P0170
FUEL
Fuel
trim
malfunction
'1
P0180
TNKT
Fuel
temperature
sensor
A
circuit
malfunction
10
P0181
TNKT-
FFuel
temperature
sensor
A
circuit
range/performance
problem
16
P0201
INJ1
Fuel
injector
circuit
malfunction
-
#1
P0202
INJ2Fuel
injector
circuit
malfunction
-
#2
"
1
P0203
INJ3Fuel
injector
circuit
malfunction
-
#3
P0204
INJ4Fuel
injector
circuit
malfunction
-
#4
P0301
MIS
-
1
Cylinder
1
misfire
detected
P0302
MIS
-
2Cylinder2
misfire
detected
P0303
MIS
-
3
Cylinder
3
misfire
detected
P0304
MIS
-
4
Cylinder
4
misfire
detected
P0325
KNOCK
Knock
sensor
circuit
malfunction
'1
P0335
CRANK
Crankshaft
position
sensor
circuit
malfunction
'1
P0340
CAM
Camshaft
position
sensor
circuit
malfunction
'1
P0400
EGR
Exhaust
gas
recirculation
flow
malfunction
`1
P0403
EGRSOL
Exhaust
gas
recirculation
circuit
malfunction
'1
P0420
CAT
Catalyst
system
efficiency
below
threshold
'1
P0440
EVAP
Evaporative
emission
control
system
malfunction
18
P0441
CPC
-
F
Evaporative
emission
control
system
incorrect
purge
flow
'1
P0443
CPC
Evaporative
emission
control
system
purge
control
valve
circuit
malfunction
'1
P0446
VCMSOL
Evaporative
emission
control
system
vent
control
malfunction
22
P0450
TNKP
Evaporative
emission
control
system
pressure
sensor
malfunction
28
P0451
TNKP
-
F
Evaporative
emission
control
system
pressure
sensor
range/performance
problem
36
'1
:
.
to
2-7
[T11A0]
.*4>
Page 220 of 2890
![SUBARU LEGACY 1996 Service Repair Manual
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
I SUBARU LEGACY 1996 Service Repair Manual
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
I](/manual-img/17/57433/w960_57433-219.png)
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
.
Page 221 of 2890
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
Page 222 of 2890
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
Page 223 of 2890
![SUBARU LEGACY 1996 Service Repair Manual 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
selec SUBARU LEGACY 1996 Service Repair Manual 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
selec](/manual-img/17/57433/w960_57433-222.png)
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
Page 224 of 2890
![SUBARU LEGACY 1996 Service Repair Manual
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
SUBARU LEGACY 1996 Service Repair Manual
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](/manual-img/17/57433/w960_57433-223.png)
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