1996 SUBARU LEGACY ESP

SUPPLEMENTAL
RESTRAINT
SYSTEM
(ELECTRIC
SENSOR
TYPE)
[M2-4]
5-5b
2
.
Construction

4
.
SAFETY
SENSOR
AND
ELECTRIC
SENSOR

Safety
sensor
and
electric
sensor
are
built
into
the
airbag
control
module
.

Safety
sensor
is
the
magnet
piston
type
sensor
.
If
the
sensor
receives
a
frontal
impact
exceeding

a
certain
limit,
the
mass
in
the
sensor
moves
forward
to
turn
the
switch
ON
.

The
electric
sensor
consists
of
a
piezo-electric
device
and
generates
a
voltage
corresponding
to

the
deceleration
speed
that
occurs
in
the
body
.

SAFETY
SENSOR
Ma
s
(Magnet)

Spring

1

ELECTRIC
SENSOR

Piezo-electric
device

11

Bonding
wire

B5H0397A

5

Reed
Switch

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T3csi
2-7

3
.
Diagnosis
System

D
I
AG
.
I
(FB3
)

NO
TROUBLE

82M0636

D
I
AG
.
I
(FB3
)

NO
TROUBLE

B2M0636

1

QA_F
(FB3
)

P0100
4
.
5
SV

2
B2M0638

QA_F
(
FB3
)

PO100
4
.5
5V

EGR
(
FB3
)

P0403
Low

82M0649

3)
Ensure
freeze
frame
data(s)
is
(are)
shown
.

(1)
When
no
trouble
is
detected,
or
after
memory
is

cleared
.

(2)
When
a
trouble
occurs
butthe
corresponding
item

is
not
displayed
.

(3)
When
only
one
trouble
corresponding
to
the
dis-

played
item
has
occurred
.

T
Abbreviation

~2
Diagnostic
trouble
code
of
trouble
occurred

(4)
When
multiple
troubles
corresponding
to
the
dis-

played
item
are
detected
.

NOTE
:

Freeze
frame
data
is
shown
on
display
for
2
seconds
at
a

time
.

17

[T3C13]
2-7
ON-BOARD
DIAGNOSTICS
II
SYSTEM

3
.
Diagnosis
System

VSP
(F02)

24km/
h
15MPH

B2M0754

EREV
(F03
)

1500
rpm

B2M0478

TW
(F04)

800C
176
°
F

B2M0479

ADVS
(F05
)

15
deg

B2M0480

QA
(
F06
)
1
.
67g
l
s
2
.
02V

82M0481

9
.
FUNCTION
MODE
:
F02

-
VEHICLE
SPEED
SIGNAL
(VSP)
-

9
Vehicle
speed
is
indicated
in
kilometerper
hour
(km/h)

and
mile
per
hour
(MPH)
at
the
same
time
.

10
.
FUNCTION
MODE
:
F03

-
ENGINE
SPEED
SIGNAL
(EREV)
-

11
.
FUNCTION
MODE
:
F04

-
ENGINE
COOLANT
TEMPERATURE
SIGNAL
(TW)
-

~
Engine
coolant
temperature
is
indicated
in
"°C"
and

"°F"
at
the
same
time
.

12
.
FUNCTION
MODE
:
F05

-
IGNITION
SIGNAL
(ADVS)
-

NOTE
:

The
ignition
timing
value
displayed
in
mode
F05
is
a
value

computed
by
ECM
and
will
not
alwayscorrespond
with
the

value
measured
with
a
timing
light
.

13
.
FUNCTION
MODE
:
F06

-
MASS
AIR
FLOW
SIGNAL
(QA)
-

Mass
air
flow
and
voltage
input
from
mass
air
flow

sensorare
shown
on
display
at
the
same
time
.

21

Z-T
[T3C37]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

3
.
Diagnosis
System

LED
No
.
Signal
name
Display

1
-
-

2
-
-

3Neutralswitch
NT

4
--

5
--

s
--

7
Test
mode
connector
LID

8
Identification
of
AT
model
AT

9
Ignition
switchIG

r
0

-
-
NT
--

-
LID
AT
IG
-

ooooa

LEDNo
.
Signal
name
Display

1
Radiator
fan
relay
2
R2

2
Knock
signal
KS

Purge
control
solenoid

valve
CN

4
Fuel
pump
relay
FP

5
-
-

6
Radiator
fan
relay
1
R1
7
A/C
relay
AR

8
A/C
switch
AC

9
--

o
--

R2
KSCN
FP
-

R1
ARAC
--

37
.
FUNCTION
MODE
:
FAO

-
ON
H
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LED
No
.
3
Shift
position
is
in
"P"or
"N"
.

LED
No
.
7
Test
mode
connector
is
connected
.

LED
No
.
8
Vehicle
is
AT
model
.

LED
No
.
9
Ignition
switch
is
turned
ON
.

38
.
FUNCTION
MODE
:
FA1

-
ON
H
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LEDNo
.
1
Radiator
fan
relay
2
is
turned
ON
.

LEDNo
.
2
Engine
is
knocking
.

LED
No
.
3
Purge
control
solenoid
valve
is
in
function
.

LED
No
.
4
Fuel
pump
relay
is
turned
ON
.

LED
No
.
6
Radiator
fan
relay
1
is
turned
ON
.

LED
No
.
7
A/C
relay
is
turned
ON
.

LED
No
.
8
A/C
switch
is
turned
ON
.

NOTE
:

9
When
LED
No
.
1,3,
4,
6
and
7
blinks
with
the
test
mode

connector
connected
and
the
ignition
switch
turned
to

ON,
the
corresponding
part
is
functioning
properly
.

e
When
LED
No
.
4
illuminates
for
only
2
seconds
after
the

ignition
switch
is
turned
to
ON,
(and
then
goes
out),
the

corresponding
part
is
functioningproperly
.

28

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[rscaoi
2-7

3
.
Diagnosis
System

LEDNo
.
Signal
name
Display

--

2
AEC
signal
EC

3
EAM
signal
AM

4
AEB
signal
EB

5
-
-

6
AET
signal
ET

Engine
torque
control

signal
TR

a
-
-

9
--

0~
--
-
EC
AM
EB
-

ET
TR
---

LED
No
.
Signal
name
Display

1
--

2
--

3
-
-

4
-
-

5
--

s
--

Pressure
sources

switching
solenoid
valve

8
--

9
--

0
-
-

-
BR
-
-
-

mmmmm

39
.
FUNCTION
MODE
:
FA2

-
ON
H
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LED
No
.
2
ECM
entered
the
AEC
signal
emitted
from

TCS
C/M
.

LED
No
.
3
EAM
signal
goes
out
.

LED
No
.
4
ECM
entered
the
AEB
signal
emitted
from

TCS
C/M
.

LED
No
.
6
ECM
entered
the
AET
signal
emitted
from

TCS
C/M
.

LEDNo
.
7
ECM
entered
the
torque
control
signal
emit-

ted
from
TCM
.

40
.
FUNCTION
MODE
:
FA3

-
ON
H
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LEDNo
.
7
Pressure
sources
switchingsolenoid
valve
is
in
function
.

NOTE
:

When
LED
No
.
7
blinks
with
the
test
mode
connector
connected
and
the
ignition
switch
turned
to
ON,
the
cor-

responding
part
is
functioning
properly
.

29

2-7
[T3C41]
ON-BOARD
DIAGNOSTICS
II
SYSTEM

3
.
Diagnosis
System

LED
No
.
Signal
name
Display

1
Catalyst
CA

2
EGR
system
E1

California
model

identification
signal
FC

4
--

5
--

s
--
--

8
Rear
oxygen
sensor
signal
OR

9Front
oxygen
sensor
signal
02

o
-
1

CA
E1
FC
--
--
OR
02
-

LEDNo
.
Signal
name
Display

1
--

2
--

3
--

4
--

5
--

s
--

7
EGR
solenoid
valve
ER

8
--

9
--

~1
-
I
-
1

-
ER
--
-

ooaoo
00000

41
.
FUNCTION
MODE
:
FA4

-
ON
<-->
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LED
No
.
1
Diagnosis
of
catalyzer
is
finished
.

LED
No
.
2Diagnosis
of
EGR
system
is
finished
.

LED
No
.
3
Vehicle
is
except
California
model
.

LED
No
.
8
Rear
oxygen
sensor
mixture
ratio
is
rich
.

LED
No
.
9
Front
oxygen
sensor
mixture
ratio
is
rich
.

42
.
FUNCTION
MODE
:
FA5

-
ON
H
OFF
SIGNAL
-

Requirement
for
LED
"ON"
.

LED
No
.
7
EGR
solenoid
valve
is
in
function
.

NOTE
:

When
LEDNo
.
7
blinks
with
the
test
mode
connector

connected
and
the
ignition
switch
turned
to
ON,
the
cor-

responding
part
is
functioning
properly
.

30

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

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T11
KOl
2-7

11
.
Diagnostics
Chart
with
Trouble
Code

K
:
DTC
P0133

-
FRONT
OXYGEN
SENSOR
CIRCUIT
SLOW

RESPONSE
(F02
-
R)
-

WIRING
DIAGRAM
:

0

OO
B!7B18

1
uuuuu
o
u
t1t
u
13fuu15i6

775p2
P60
35
6673
41
"143
IT10121
D
6860
1
23
4
173-T-4-1

B2M0787

NOTE
:

For
the
diagnostic
procedure
on
front
oxygen
sensor
cir-

cuit
slow
response
(DTC
P0133),
referto
2-7
[T10K0)*2
.

85