1996 SUBARU LEGACY radiator

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T»BGO]
2-7

11
.
Diagnostics
Chart
with
Trouble
Code

BG
:
DTC
P1500

-
RADIATOR
FANRELAY
1
CIRCUIT

MALFUNCTION
(FAN
-1)
-

WIRING
DIAGRAM
:

Ignition
switch
~-1

Sub
fanrelay
1

A/C
relay
holder

B71FTIF28
O
O
F31
a
:
F10
e
:
B52

42
C12
32
344
32
62841D
X29
0116

Fl3
F45

34
1
2
3
~
1111131
1516171819
O~~I

u
112
1
L1
1
3
1
4
1
U
56
U
78

11
15
1

82M0799

NOTE
:

For
the
diagnostic
procedure
on
radiator
fan
relay
1
cir-

cuit
malfunction
(DTC
P1500),
referto
2-7
[T10B10]*2
.

125

2-7
[T11BH0]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

11
.
Diagnostics
Chart
with
Trouble
Code

BH
:
DTC
P1502

-
RADIATOR
FAN
FUNCTION
PROBLEM

(FAN
-
F)
-

Ignition
switch
C

B72

Sub
fanrelay
t

rn

a
:
F~0

b
:
F~1

e
:O

Main
fan
motor

f17

motor

f16

WIRING
DIAGRAM
:

FL1
.258

58F-4

O
No
.
t
-
FMF~
F45862
O

ECM
21

F21
J
u
l
F28
J
u
l
O
~
O

U
IJ
boW
booms
booms

20A10A
Main
fan
Main
fan
Sub
fan
relay
1
relay
2
relay
2

A/C
relay
holder

e
:
F40
b
:
f41
e
:
(@)

F
1
2
345
&N
rQ3
MZMNTM
F7281
9
110

(9)
QD
(~D
(~D(~D
(N)Q~D
0~~)
(D
1
2u34
!J
56
u
78
u

123
3
~
123
~1
4
1~12121~
0
1

82M0800

NOTE
:

Forthe
diagnostic
procedure
on
radiator
fan
function

problem
(DTC
P1502),
referto
2-7
[T10BJ0]*2
.

126

WIRING
DIAGRAM
(D6013]
6-3
6
.
Wiring
Diagram

Data
link
connector
Test
mode

B78
B75
~
B76
r
J
-j
mm
C
0
J

4

m

1Ref
.
to
Air
/conditioning
system
.

1Ref
.to
Radiator
~-----s
/
f
an
system
.

10
.

ef
.
toAT
control
R
system,
/L
a
F
m
3
L
o
P
~t
P
O

Engine
B86
control
module

m
M
s

D

j
i

E
v
v

.
.
.
.
l
J
"
-

N
819
8l
BIB
~
B19

f
~
T5
..
..
a

""
CD
Pressure
Front
sources
oxygenswitching
sensor,
~~
i
A
.,n
;H

B75
(Green)

2

Bt8
(Dark
gray)

21
3

CF

Rear
oxygensensor
(California
model)
Rear
oxygensensor
valve
(Othermodels)

B76
(Green)
Bl
(Brown)
Bl9
T6
(Grey)
878
(Y
e
II
ow)

IFNI
12
75
56789

B40
(Grey)
(BBD
(L
i
ghtb
I
ue)

12345678

910111213141516

1
23
4
56
7
8
9
l0
U
l213
14
15
16
17
1819
20
1
22232426
27
28
293
03
132
33
343
5
3637
38
39
4
0
4142
43
44
45
1
46
1
47
1
48
1
49
1
5051
253
54
S5
56S7
5
859
60616
263
64656661
6869
70
71
7273747576777879
80
818283
84
85
1
86
1
87
1
88
1
89
1
90
91
92
93949596

BUR10-02B

13

OBD-1l
service
connector

840

6-3
[oso2s]
WIRING
DIAGRAM

6
.
Wiring
Diagram

23
.
RADIATOR
FAN
SYSTEM

Diode
(A/C)

Main
fan
motor

oi3~

Subfen
motor

C
~

Flb
(B
leCk)

F43
(Orange)
Fl7
(B
I
ec
K)

(~D(~~(~D
QD

1
2
1
2
[3ql2
4
34
P34
34

A/C
relay
holder(Black)

F44

1234
5678

Engine
control
module

al
I

Air
conditioning
relay
holder

10A
F27

Main
fan
relay-1
F28

Ma
i
nfan
F30
Mr
relay-2

Sub
fan
F29
o
D
relay-2

F45

234
6789
1
1112131415161718192010

884
(L
1
ght
b
I
ue)

12
345678
9l0
lit213141516
17181920212
3242526
78
930
313233343
363738394
4142434445464748
1
49
~
1]
1
51
~
2
15
3
1
54
~
5
56
7
58
59
0
6l
62
63
4
65
66
67
68
9
70
7172
7374
7
76
77
78
79
8
8182
83
84
8
96
87
9
9
192
9394
9
96

BUR14-02

16

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
.

WIRING
DIAGRAM
[D6013]
6-3

6
.
Wiring
Diagram

Data
link
connector
Testmode

878B75
~
B76

YJ
J
~mm
L
J

)
Ref
.
toAir
/
conditioning
system
.

1
Re
f
.to
Radiator
/
fan
system
.

Ref
.
toAT
control
J
system
.

L

F
d'
3L
a0J
mo
O
~VI~
f~
MP

Enginecontro
I
BB4
module

m
>rCD
J3
3

F
.
.
..
--
~
-

S
'
K
J
'
B19
'-
818
v
--
Bl9
rl
CE

r
......

T5
~
..
....

T6

Front
Pressure
sources
oxygen
switchfr
sensor
~
.,
i
o
.,
.

B75
(Green)

2

B78
(Ye
I
low)

12
34
56789

Rear
oxygen
sensor
(California
model)

876
(Green)

2

Rear
oxygensensor
(Other
models)

Bl
(Brown)

12

818
(De
rk
gray)

21
3
OBD-
11
service
connector

N~
BGO

valve

9

(Gray)
T6
Bl9

21
43

840
(Gray)
B84
(L
1
ght
b
I
ue)

1
2
34
56
78
9l0
llt213141516

1
1
1
2
1
3
1
4
1
5
1
6
1
7
8
t718192021222324252627282930
3132
3334
3S
I
36
1
37
1
38
1
39
1
40
1
41
1
44445464748
49
50
5152
535455565758
59
60
6162
1
63
1
64
1
65
1
66
1
67
1
68
1
6
9
70
1
9
1
10
1
11
1
12
1
13
1
14
1
151671
1
72
1
73
1
74
1
75
1
76
1
77
1
78
1
79
1
80
1
81
1
82
1
83
1
84
85
86
87
88
1
89
1
9
0
1,
192
939495
96

BUR10-03B

a

3. Engine Idle Speed
A: MEASUREMENT
1) Before checking idle speed, check the following:
(1) Ensure that air cleaner element is free from
clogging, ignition timing is correct, spark plugs are in
good condition, and that hoses are connected properly.
(2) Ensure that malfunction indicator light (CHECK
ENGINE light) does not illuminate.
2) Warm-up the engine.
G2M0096
3) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
CAUTION:
When connecting Subaru Select Monitor, turn ignition
switch to OFF.
4) Start the engine and measure engine speed.
NOTE:
Engine speed is indicated on Subaru Select Monitor by
selecting “MODE F04”.
G2M0097
NOTE:

When using the OBD-II general scan tool, carefully read
its operation manual.

When Subaru Select Monitor is not used, attach the
pickup sensor on tachometer (Secondary pickup type) to
#1 cylinder spark plug cord.

This ignition system provides simultaneous ignition for
#1 and #2 plugs. It must be noted that some tachometers
may register twice that of actual engine speed.
5) Check idle speed when unloaded. (With headlights,
heater fan, rear defroster, radiator fan, air conditioning, etc.
OFF)
Idle speed (No load and gears in neutral (MT) or N or
P (AT) position):
700±100 rpm
6) Check idle speed when loaded. (Turn air conditioning
switch to “ON” and operate compressor for at least one
minute before measurement.)
Idle speed [A/C“ON”, no load and gears in neutral
(MT) or N or P (AT) position]:
850±50 rpm
CAUTION:
Never rotate idle adjusting screw. If idle speed is out
of specifications, refer to General On-board Diagnosis
Table under “2-7 On-Board Diagnostics II System”.
3
2-2
3. Engine Idle Speed

G2M0066
1. Oil Pump
A: REMOVAL
1) Drain engine oil.
Set container under the vehicle, and remove drain plug
from oil pan.
B2M0051A
2) Drain coolant.
Set container under the vehicle, and remove drain cock
from radiator.
B2M0302
3) Remove belt covers, timing belt and related parts.

B2M0303
4) Remove belt tensioner bracket.
G2M0210
5) Remove left cam sprocket and left belt cover No. 2.
6) Remove water pump.
5
2-4SERVICE PROCEDURE
1. Oil Pump