1996 SUBARU LEGACY coolant

2-T
[T11A0]
ON-BOARD
DIAGNOSTICS
11
SYSTEM

11
.
Diagnostics
Chart
with
Trouble
Code

11
.
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
76

P0101
QA
-
RMass
air
flow
sensor
circuit
range/performance
problem
77

P0105
P
-
S
Pressure
sensor
circuit
malfunction
78

P0106
PS
-
R
Pressure
sensor
circuit
range/performance
problem
79

P0115
TW
Engine
coolant
temperature
sensor
circuit
malfunction
80

P0120
THV
Throttleposition
sensor
circuit
malfunction
81

P0121
TH
-
R
Throttleposition
sensor
circuit
range/performance
problem
82

P0125
TW
-
CL
Insufficient
coolant
temperature
for
closed
loop
fuel
control
83

P0130
F02
-
V
Front
oxygen
sensor
circuit
malfunction
84

P0133
F02
-
R
Front
oxygen
sensor
circuit
slowresponse
85

P0135
F02H
Front
oxygen
sensor
heater
circuit
malfunction
86

P0136
R02
-
V
Rear
oxygen
sensor
circuit
malfunction
87

P0139
R02
-
R
Rear
oxygen
sensor
circuit
slowresponse88

P0141
R02H
Rear
oxygen
sensor
heater
circuit
malfunction
89

P0170
FUEL
Fuel
trim
malfunction
90

P0201
INJ1Fuel
injector
circuit
malfunction
-
#1

P0202
INJ2Fuel
injector
circuit
malfunction
-
#2
91
P0203
INJ3Fuel
injector
circuit
malfunction
-
#3

P0204
INJ4Fuel
injector
circuit
malfunction
-
#4

P0301
MIS
-
1
Cylinder
1
misfire
detected

P0302
MIS
-
2
Cylinder
2
misfire
detected
2
P0303
MIS
-
3
Cylinder
3
misfire
detected
9

P0304
MIS
-
4
Cylinder
4
misfire
detected

P0325
KNOCK
Knock
sensor
circuit
malfunction
93

P0335
CRANK
Crankshaft
position
sensor
circuit
malfunction
94

P0340
CAM
Camshaft
position
sensor
circuit
malfunction
95

P0400
EGR
Exhaust
gas
recirculation
flow
malfunction
96

P0403
EGRSOL
Exhaust
gas
recirculation
circuit
malfunction
97

P0420
CAT
Catalyst
system
efficiency
below
threshold
98

P0441
CPC
-
F
Evaporative
emission
control
system
incorrect
purge
flow
99

P0443
CPC
Evaporative
emission
control
system
purge
control
valve
circuit
malfunction
100

P0500
VSP
Vehicle
speed
sensor
malfunction
101

P0505
ISC
Idle
control
system
malfunction
102

P0506
ISC
-
L
Idle
control
system
RPM
lower
than
expected
103

P0507
ISC
-
H
Idle
control
system
RPM
higher
than
expected
104

P0600
-
Serial
communication
link
malfunction
105

P0601
RAM
Internal
control
module
memory
check
sum
error
106

P0703
ATBRK
Brake
switch
input
malfunction
T
107
I

74

2-7
[T11F0]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

11
.
Diagnostics
Chart
with
Trouble
Code

F
:
DTC
P0115

-
ENGINE
COOLANT
TEMPERATURE

SENSOR
CIRCUIT
MALFUNCTION
(TW)
-

WIRING
DIAGRAM
:

B84
B21
E2E8

ECM
2-Q
FE

884

1
2u34
u
56
u
78
u

171819
20
2122
23242526272829
30

4546
47
484950
5152
53
54555657
71127314757671787980818283

4_Lr

B21

1234
5678

9
1
10
1
11
1
12
~

Engine
coolant
temperature
sensor

E8

12

82M0539

NOTE
:

For
the
diagnostic

ature
sensor
circuit

[T10F0]*2
.

procedure
on
engine
coolant
temper-

malfunction
(DTC
P0115),
refer
to
2-7

80

ON-BOARD
DIAGNOSTICS
II
SYSTEM
(T11,01
2-7

11
.
Diagnostics
Chart
with
Trouble
Code

Engine
coolant
temperature
sensor

I
:
DTC
P0125

-
INSUFFICIENT
COOLANT
TEMPERATURE

FOR
CLOSED
LOOP
FUEL
CONTROL

(TW
-
CL)
-

WIRING
DIAGRAM
:

B84
B21
E2E8

ECM

B84
B21
ES

1
2u34
U
-1
5
[
6
f
U
78
u
F
5~
55
171819
20
2122
2324
1
25
1
262728
2930
45
1
46
1
47
1
48
1
49
1
50
5152
535455
5657
7172
73
747576
77
787980
8182
83

1234

5678
9
10
1112
12

B2M0539

NOTE
:

For
the
diagnostic
procedure
on
insufficient
coolanttem-

perature
for
closed
loop
fuel
control
(DTC
P0125),
referto

2-7
[T1010]*2
.

83

2-7
[T11U0]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

11
.
Diagnostics
Chart
with
Trouble
Code

U
:
DTC
P0301

-
CYLINDER
1
MISFIRE
DETECTED

(MIS-1)
-

V
:
DTC
P0302

-
CYLINDER
2
MISFIRE
DETECTED

(MIS-2)
-

W
:
DTC
P0303

-
CYLINDER
3
MISFIRE
DETECTED

(MIS-3)
-

X
:
DTC
P0304

-
CYLINDER
4
MISFIRE
DETECTED

(MIS-4)
-

WIRING
DIAGRAM
:

Crankshaft
Camshaft
Main
rela
y
position
position
Mass
air
o
sensorsensor
flow
sensor
0

O
E10E15
O

B47
ECM
SBF-2

E8
B12
E13
E6
E17

#3
#4
77

Ll
-
t
:A

Engine
Neutral
Throttle
~
E16
coolant
positionposition
temperature
switch
sensor
#1#2
sensor

Fuel
injectors
1
4
10
111
1
14
1
1
1I181920
2122
23
24
25262728
29
3132
33
34353637
3940
4142
4344454647484950
5152
53545556575859
1
60
61
1
62
1
63
1
64
1
65
1
66
1
6L/
1
698
9
0
I
1111721
1741
51761771781191801811827831
8485
861$7
888990
9192
9394951961
I

B22E10E15

O
O
B12E13
B41
Efi
EI7

1234
1
2
5678
~
Et6
5678
_3
1
ill
1
2345
9101112
1
23
56
13141516
1
2
82M0791

NOTE
:

For
the
diagnostic
procedure
on
cylinder
misfire
detected

-
#1
(DTC
P0301),
#2
(DTC
P0302),
#3
(DTC
P0303)
and
#4
(DTC
P0304),
referto
2-7
[T10U0,
T10V0,
T10W0
and

T10X0]*2
.

92

s-3
[D6013]

6
.
Wiring
Diagram

WIRING
DIAGRAM

Engine
Shield
Boost
Throttle
coolant
point
sensor
position
Knock
temperature
E
.G.R
.
connector
sensor
sensor
sensor
solenoid

B83
H
I
B2
~~
E13
PI
E14
m
I
E8
~I
ElB

..

E2

B21

Ref
.
toAT(
;;
control
system
.

Enginecontro
I
884
module

.
.
..

822
m
mv

E3
m~~;
(Ca
I
i
forn
t
a
mode
l
)

W-
M--
(
9
)
F-F-M-
(
:
9D

Mess
air
Ignitor
flowsensor

(Brown)
E18
E8
(Brown)(Black)
B2
El3
(Brown)

12
123

B3
(Grey)
Bl3
(Gray)

12345123456

Ell
mm
EE

GE
Ignition
coil

E!2
(Gray)

123

82l
(L
i
ght
gray)

1234
5678
9101112

B83

1234

B22
(L
i
ght
gray)

6278
S

1

34

9
101112
3141516
1a

BUR10-02C

14

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>

6-3
[D6013]
WIRING
DIAGRAM

6
.
Wiring
Diagram

Shield
joint
connector

rE
~
;EB
(
883

E2

B21

Ref
.
toAT
control
system
.

Pressuresensor

....

Englnecontro
I
gg4
module

....

B22

E3

(California
model)

B3
~+~M
B13

Mass
air
Ignitor
flowsensor

(Brown)
E18
E8
(Brown)
(B
I
ack)
B2
E13
(Brown)

12
123

B3
(Grey)
Bl3
(Gray)

12345123456

Ell
(Gray)

123

B21
(L
i
ght
gray)

1234
5678
9
10
ll
l2

Ell

Ignition
coil

883

1234

B22
(L
i
ght
gray)

1
234
S678
9
101112
1
41516
3
fili

BURIO-03C

Eng
i
ne
Throttle
coolant
position
Knock
temperature
E
.
G
.
R
.
sensor
sensor
sensor
solenoid

1
:1
I---I
[--J
[--J

G2M0106
1. General Precautions
1) Before disassembling engine, place it on ST3.
ST1 498457000 ENGINE STAND ADAPTER RH
ST2 498457100 ENGINE STAND ADAPTER LH
ST3 499817000 ENGINE STAND
2) All parts should be thoroughly cleaned, paying special
attention to the engine oil passages, pistons and bearings.
3) Rotating parts and sliding parts such as piston, bearing
and gear should be coated with oil prior to assembly.
4) Be careful not to let oil, grease or coolant contact the
timing belt, clutch disc and flywheel.
5) All removed parts, if to be reused, should be reinstalled
in the original positions and directions.
6) Gaskets and lock washers must be replaced with new
ones. Liquid gasket should be used where specified to
prevent leakage.
7) Bolts, nuts and washers should be replaced with new
ones as required.
8) Even if necessary inspections have been made in
advance, proceed with assembly work while making
rechecks.
2. Hydraulic Lash Adjuster
A: INSPECTION
1) Disconnect blow-by hose from rocker cover.
2) Remove spark plug cap.
B2M0413A
3) Remove left and right rocker covers.
CAUTION:
Before removing left rocker cover, disconnect battery
cables and generator cable.
11
2-3SERVICE PROCEDURE
1. General Precautions - 2. Hydraulic Lash Adjuster