ignition SUBARU LEGACY 1996 Service User Guide

[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

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[T3C23]
2-7

3
.
Diagnosis
System

02max
-
min
(
F
12
)

0
.
80V
0
.
10v

BMW

R02
(F13)

0
.
60
V

B2M0488

R02max
-
min
(F14)

0
.
80V
0
.
10V

82M0489

ALPHA
(F17)

0
.8

B2M0490

KNOCK
(F19)

3
.
0deg

82M0491

19
.
FUNCTION
MODE
:
F12

-
FRONT
OXYGENSENSOR
MAXIMUM
AND

MINIMUM
OUTPUT
SIGNAL
(F02MAX
-
MIN)
-

Front
oxygen
sensor
maximum
andminimum
output

signals
are
indicated
at
the
same
time
.

20
.
FUNCTION
MODE
:
F13

-
REAR
OXYGENSENSOR
OUTPUT
SIGNAL
(R02)
-

21
.
FUNCTION
MODE
:
F14

-
REAR
OXYGEN
SENSOR
MAXIMUM
AND
MINIMUM

OUTPUT
SIGNAL
(R02MAX
-
MIN)
-

oRear
oxygen
sensor
maximum
and
minimum
output
sig-

nals
are
indicated
at
the
same
time
.

22
.
FUNCTION
MODE
:
F17

-
SHORTTERM
FUEL
TRIM
[A/F
CORRECTION

COEFFICIENT]
(ALPHA)
-

23
.
FUNCTION
MODE
:
F19

-
KNOCK
SENSOR
SIGNAL
[IGNITION
TIMING

CORRECTION
COEFFICIENT]
(KNOCK)
-

23

ON-BOARD
DIAGNOSTICS
II
SYSTEM
ITscas1
2-7

3
.
Diagnosis
System

36
.
FA
MODE
FOR
ENGINE

Function

mode
LED
No
.
Contents
Display
LED
"ON"
requirements

3Neutral
switch
NT
When
neutralposition
signal
is
entered
.

7Test
mode
connector
UD
When
test
mode
connector
is
connected
.
FAO
8
AT/MT
identification
signal
AT
When
AT
identification
signal
is
entered
.

9
Ignition
switchIG
When
ignition
switch
is
turned
ON
.
1
Radiator
fan
relay
2
R2
When
radiator
fanrelay2
isin
function
.

2
Knock
signal
KS
When
knock
signal
is
entered
.

3
Purge
control
solenoid
valve
CNWhen
purge
control
solenoid
valve
is
in
func-

tion
.
FA1
4Fuel
pump
relay
FP
When
fuel
pump
relay
isin
function
.

6
Radiator
fanrelay
1
R1
When
radiator
fanrelay
1
isin
function
.

7
Air
conditioner
relay
ARWhen
air
conditioner
relay
isin
function
.

8
Air
conditioner
switch
ACWhen
air
conditioner
switch
is
turned
ON
.

2
AEC
signal
ECWhen
AEC
signal
is
entered
.

3
EAM
signal
AM
When
EAM
signal
is
gone
out
.

FA2
4
AEB
signal
EB
When
AEB
signal
is
entered
.

6
AET
signal
ET
When
AET
signal
is
entered
.

7
Engine
torque
control
signal
TR
When
engine
torque
control
signal
is
entered
.

FA3
7
Pressure
sources
switching
solenoid
valve
BR
When
pressure
sources
switching
solenoid

valve
is
in
function
.

1
Catalyst
CA
When
diagnosis
of
catalyzer
is
finished
.

2
EGR
system
E1
When
diagnosis
of
EGR
system
is
finished
.

FA4
3
California
model
identification
signal
FC
When
California
model
identification
signal
is

entered
.

8
Rear
oxygen
sensor
signal
OR
When
rear
oxygen
sensor
mixture
ratio
is
rich
.

9Front
oxygen
sensor
signal
02
When
front
oxygen
sensor
mixture
ratio
is

rich
.

FA5
7
EGR
solenoid
valve
ER
When
EGR
solenoid
valve
is
in
function
.

27

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

2-7
[T3C48]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
3
.
Diagnosis
System

E-4AT
(F00)

4WD
1993

G3M0723

Probable
cause
(if
outside"specifieddata")
48
.
FUNCTION
MODE
:
F00

-
MODE
DISPLAY
-

SPECIFIED
DATA
:

Data
at
the
left
shouldbe
indicated
.

1
.
Communication
failure
(1)
Check
loose
or
poor
connectors,
or
(No
communication
method
can
be
confirmed

with
power
ON
.)
(2)

shortcircuit
.

Check
type
of
cartridge
.

2
.
Vehicle
types
cannot
be
identified
(due
to

communication
failure)
.

VB
(F01)

12
.7
V

OBD0673

1
.
Battery

1
2
.
Charging
system

Check
improper
cartridge
.
Replace
with
proper
one
.

49
.
FUNCTION
MODE
:
F01

-
BATTERY
VOLTAGE
(VB)
-

CONDITION
:

(1)
Ignition
switch
ON

(2)
Engine
idling
after
warm-up

SPECIFIED
DATA
:

(1)
12±1
V

(2)
13
±
1
V

Check
battery
voltage
and
specific
gravity
of

electrolyte
.

(1)
I
Measure
regulatingvoltage
under
no
loads
.

(2)
Check
generator
(as
asingle
unit)
.

34

2-7
[T3E2]
ON-BOARD
DIAGNOSTICS
II
SYSTEM
3
.
Diagnosis
System

ST2

D

00000

O

00000
00000
"
u
~O
O

r0====z3
STI

OBDO057A

E
:
INSPECTION
MODE

2
.
SUBARU
SELECT
MONITOR

After
performing
diagnostics
and
clearing
the
memory,

check
for
any
remaining
unresolved
trouble
data
.

1)
Prepare
Subaru
select
monitor
and
cartridge
.

ST1
498307500
SELECT
MONITOR
KIT

ST2
498345700
CARTRIDGE

2)
Turn
ignition
switch
andSubaru
select
monitor
switch

to
OFF
.

3)
Insert
cartridge
into
Subaru
select
monitor
.

1

0

C,
00~~
F
0000
E
0000
0
000

G3MO1501

4)
Connect
test
mode
connector
at
the
lower
portion
of

instrument
panel
(onthe
driver's
side),
to
the
side
of
the

center
console
box
.

Test
mode
connector

B2M0432B
I

\
Subaru
select
monitor

1

o
cocoaoaooo
cocoaoooou

a---
7

82M0829A

5)
Connect
Subaru
select
monitor
to
data
link
connector
.

*
Using
data
link
connector
for
Subaru
select
monitor

only
:

Connect
Subaru
select
monitor
to
its
data
link
connector

located
in
the
lower
portion
of
the
instrument
panel
(on
the
driver's
side),
to
the
side
of
thecenter
console
box
.

38

ON-BOARD
DIAGNOSTICS
II
SYSTEM
[raFi]
2-7
3
.
Diagnosis
System

I
ST
I

1-1
ooaao0000000000oaooo

OBD0669A
I

ST2

00000
I
0
0
(03C03
0

~
00000
;
i~~
C01-

ST1

OBDD057A

9
Using
data
link
connector
for
Subaru
select
monitor

and
OBD-II
general
scan
tool
:

(1)
Connect
ST
to
Subaru
select
monitorcable
.

ST
498357200
ADAPTER
CABLE

(2)
Open
the
cover
and
connect
Subaru
select
moni-

torto
data
link
connector
located
in
thelower
portion

of
the
instrument
panel(on
the
driver'sside),to
the

lower
cover
.

CAUTION
:

Do
not
connect
scan
tools
except
for
Subaru
select
mon-

itor
and
OBD-II
general
scan
tool
.

6)
Turn
ignition
switch
to
ON
(engine
OFF)
and
Subaru

select
monitor
switch
to
ON
.

7)
Start
the
engine
.

NOTE
:

Ensure
the
selector
lever
is
placed
in
the
"P"
position

before
starting
.

8)
Using
the
selector
lever
or
shift
lever,
turn
the
"P"
posi-

tion
switch
and
the
"N"
position
switch
to
ON
.

9)
Depress
the
brake
pedal
to
turn
the
brake
switch
ON
.

10)
Keep
engine
speed
in
the
2,500-3,000
rpm
range
for

40
seconds
.

NOTE
:

On
models
without
tachometer,
usethe
Subaru
select

monitor
or
tachometer
(Secondary
pickup
type)
.

11)
Place
the
selector
lever
or
shift
lever
in
the
"D"
posi-

tion
and
drive
the
vehicle
at
5
to
10
km/h
(3to
6
MPH)
.

NOTE
:

On
AWD
vehicles,
release
the
parking
brake
.

F
:
COMPULSORY
VALVE
OPERATION
CHECK

MODE

1
.
SUBARU
SELECT
MONITOR

1)
Prepare
Subaru
select
monitor
and
cartridge
.

ST1
498307500
SELECT
MONITOR
KIT

ST2
498345700
CARTRIDGE

39

2-7
[73F1]
ON-BOARD
DIAGNOSTICS
11
SYSTEM
3
.
Diagnosis
System

2)
Turn
ignition
switch
and
Subaru
select
monitor
switch

to
OFF
.

3)Insert
cartridge
into
Subaru
select
monitor
.

0000
0000

F1

ooao
E10000
0000

G3M0150I

4)
Connect
test
mode
connector
at
the
lower
portion
of

instrument
panel(on
the
driver's
side),
to
the
sideof
the
center
console
box
.

Test
mode
connector

B2M0432B

\
Subaru
select
monitor

1

e~sa

00000
nooooDODO"ooooa

7

B2M0829A

5)
Connect
Subaru
select
monitor
to
data
link
connector
.

9
Using
data
link
connector
for
Subaru
select
monitor

only
:

Connect
Subaru
select
monitor
to
its
data
link
connector

located
in
the
lower
portion
of
the
instrument
panel(on

the
driver's
side),
to
the
side
of
thecenter
console
box
.

e
Using
data
fink
connector
for
Subaru
select
monitor

and
OBD-II
general
scan
tool
:

(1)
Connect
ST
to
Subaru
select
monitor
cable
.

ST1
498357200
ADAPTER
CABLE

40