phone SUBARU LEGACY 1997 Service Repair Manual

BRAKES
[ABS
5
.31
TYPE]
IT8117i
4-4d

8
.
Diagnostics
Chart
with
Trouble
Code
by
ABS
Warning
Light

814
I
CHECK
POOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HlU
and
ABS
sensor?
<
Ref,
to

FOREWORD
[T3C1]
.*10
>

,rES
:
Repair
connector
.

No
:
Go
to
step8115
.

18115
1
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
is
the
cartelephone
orthe
wireless
transmit-

ter
properly
installed?

Go
to
step
8116
.

No
:
Properly
install
the
car
telephone
or
the
wireless

transmitter
.

6
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

Are
noise
sources
(such
as
an
antenna)

installed
near
the
sensor
harness?

8100

1
1
-
1
2
01
19
1
1
81
17
11
6
11
!
98
7
65432
1111
11

D

fl
-0
Q
0

B4M1244A

vES
:
Install
the
noise
sources
apart
from
the
sensor

harness
.

No
:
Go
to
step
8117
.

8117
CHECK
SHIELD
CIRCUIT
.

1)
Connect
all
connectors
.

2)
Measure
resistance
between
shield
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
22
I
(8100)
No
.
11
-
Chassis
ground
:

Trouble
code
24
/
(8100)
No
.
2
-
Chassis
ground
:

Trouble
code
26
/
Go
to
step
8118
.

Trouble
code
28
/
Go
to
step
8118
.

CHECK
;
Is
the
resistance
less
than
0
.5
0?

Go
to
step
8118
.

No
:
Repair
shield
harness
.

45

BRAKES
[ABS
5
.31
TYPE]
Rsss1
4-4d

8
.
DiagnosticsChart
with
Trouble
Code
by
ABS
Warning,Light

M

1
23
45
6
718
1101111121131141151
1116117118119121211
'9t,-73
24-
2526
71281203*
01311111

B4M1243A

8S1
CHECK
GROUND
CIRCUIT
OF
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Measure
resistance
between
ABSCM&H/U
and
chassis

ground
.

Connector
&
terminal

(F49)
No
.
23
-
Chassis
ground
:

CHECK
;
Is
the
resistance
less
than
0
.5
0?
Go
to
step
8S2
.

No
:
Repair
ABSCM&H/U
ground
harness
.

8S2
CHECKPOOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

battery,ignition
switch
and
ABSCM&HlU?

<
Ref
.
to
FOREWORD
[T3C1]
.*10
>

vES
:
Repair
connector
.

No
:
Go
tostep
8S3
.

8S3
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
thecar
telephone
orthe
wireless
transmit-

ter
properly
installed?

,rES
:
Go
to
step
8S4
.

No
:
Properly
install
thecar
telephone
or
the
wireless

transmitter
.

8S4
CHECK
SOURCES
OFSIGNAL
NOISE
.

CHECK
;
Are
noise
sources
(such
asan
antenna)

installed
near
the
sensorharness?

,rES
:
Install
the
noise
sources
apartfrom
the
sensor

harness
.

No
:
Go
to
step
8S5
.

8S5
I
CHECK
ABSCM&HIU
.

1)
Connect
all
connectors
.

2)
Erase
the
memory
.

3)
Perform
inspection
mode
.

4)
Read
out
the
trouble
code
.

CHECK
:
Is
the
same
trouble
code
as
in
thecurrent

diagnosis
still
being
output?

Replace
ABSCM&H/U
.

No
:
Go
to
step
8S6
.

63

4-4d
[T1
01-111
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withselect
monitor

FR
(F05)

30
km/h

B4M0922

(SELECT

CHECK
OUTPUT
MONITOR

F
ABS
SENSOR
USING

Read
the
ABS
sensor
output
corresponding
to
the
faulty

system
in
the
select
monitor
function
mode
.

NOTE
:

The
select
monitor
display
shows
that
the
front
right
wheel

is
rotating
at
30
km/h
.

CHECK
:
Does
the
speed
indicated
on
the
display

change
in
response
to
the
speedometer

reading
during
acceleration/deceleration

when
the
steering
wheel
is
in
the
straight-

ahead
position?

Go
to
step
1012
.

No
:
Go
to
step
10L8
.

I1011-2
CHECK
POOR
CONTACT
IN
CONNECTORS
.

Turn
ignition
switch
to
OFF
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HfU
and
ABS
sensor?

,rES
:
Repair
connector
.

No
:
Go
to
step
10L3
.

10L3
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
the
cartelephone
orthe
wireless
transmit-

ter
properly
installed?

Go
to
step
10L4
.

No
:
Properly
install
the
car
telephone
or
the
wireless

transmitter
.

1
10L4
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

Are
noise
sources
(such
as
an
antenna)

installed
near
the
sensorharness?

Install
the
noise
sources
apartfromthe
sensor

harness
.

No
:
Go
to
step
10L5
.

124

4-4d
[TioL2y1
BRAKES
[ABS
5
.31
TYPE]

10
.
Diagnostics
Chart
withSelect
monitor

8100

98
7161
F
5T43
J2~
.
1~2
191
7
6
5141
1
11
1

D

S2
0
.
ij

B4M
1244A

1021
I
CHECKPOOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

ABSCM&HlU
and
ABS
sensor?
<
Ref
.
to

FOREWORD
[T3C1]
.*10
>

,res
:
Repair
connector
.

No
:
Go
to
step
10L22
.

1022
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
the
cartelephone
orthewireless
transmit-
ter
properly
installed?

,res
:
Go
to
step
10L23
.

No
:
Properly
install
the
car
telephone
or
the
wireless

transmitter
.

1
10L23
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Are
noise
sources
(such
as
an
antenna)

installed
near
the
sensorharness?

Install
the
noise
sources
apartfrom
the
sensor

harness
.

No
:
Go
tostep
10L24
.

10L24
CHECK
SHIELDCIRCUIT
.

1)
Connect
all
connectors
.

2)
Measure
resistance
between
shield
connector
and

chassis
ground
.

Connector
&
terminal

Trouble
code
22
I
(8100)
No
.
11
-
Chassis
ground
:

Trouble
code
24
/
(8100)
No
.
2
-
Chassis
ground
:

Trouble
code
26
l
Go
to
step
10L25
.

Trouble
code
28
/
Go
to
step
10L25
.

CHECK
:
Is
the
resistance
less
than0
.5
S2?

vES
:
Go
tostep
10L25
.

No
:
Repair
shield
harness
.

130

BRAKES
[ABS
5
.3i
TYPE]
[T10V5]4-4d

10
.
Diagnostics
Chart
with
Select
Monitor

a

112131415161718
01112131415
11611711811912
1
23
24
2526
71
28
1
2130
1
31
1
1

La
-_
B4M
1243A

1
110111
CHECK
GROUND
CIRCUIT
OF
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Disconnect
connector
from
ABSCM&H/U
.

3)
Measure
resistance
between
ABSCM&H/U
and
chassis

ground
.

Connector
&
terminal

(F49)
No
.
23
-
Chassis
ground
:

CHECK
:
Is
the
resistance
less
than0
.5
S2?

YES
:
Go
to
step
10V2
.

No
:
Repair
ABSCM&H/U
ground
harness
.

CHECK
POOR
CONTACT
IN
CONNECTORS
.

CHECK
:
Is
there
poor
contact
in
connectors
between

battery,
ignition
switch
and
ABSCM&HIU?

<
Ref
.
to
FOREWORD
[T3C1]
.*10
>

Repair
connector
.

No
:
Go
to
step
10V3
.

10V3
CHECK
SOURCES
OF
SIGNAL
NOISE
.

CHECK
:
Is
thecar
telephone
orthe
wireless
transmit-

ter
properly
installed?

vES
:
Go
to
step
110114
.

No
:
Properly
install
the
car
telephone
or
the
wireless

transmitter
.
1
110114
I
CHECK
SOURCES
OF
SIGNAL
NOISE
.
I

CHECK
;
Are
noise
sources
(such
as
an
antenna)

installed
near
the
sensorharness?

.rES
:
Install
the
noise
sources
apart
from
the
sensor

harness
.

No
:
Go
to
step
10V5
.

10V5
CHECK
ABSCM&H/U
.

1)
Turn
ignition
switch
to
OFF
.

2)
Connect
all
connectors
.

3)
Erase
the
memory
.

4)
Perform
inspection
mode
.

5)
Read
outthe
trouble
code
.

CHECK
:
Is
the
same
trouble
codeas
in
the
current

diagnosis
still
being
output?

Replace
ABSCM&H/U
.

No
:
Go
to
step
10V6
.

147

B: CHECK LIST FOR INTERVIEW
1. CHECK LIST NO. 1
Check the following items when problem has occurred.
NOTE:
Use copies of this page for interviewing customers.
Customer’s name Engine no.
Date of sale Fuel brand
Date of repair Odometer reading km
Vin no.miles
WeatherFine
Cloudy
Rainy
Snowy
Various/Others:
Outdoor temperature F(°C)
Hot
Warm
Cool
Cold
PlaceHighway
Suburbs
Inner city
Uphill
Downhill
Rough road
Others:
Engine temperatureCold
Warming-up
After warming-up
Any temperature
Others:
Engine speed rpm
Vehicle speed MPH
Driving conditionsNot affected
At starting
While idling
At racing
While accelerating
While cruising
While decelerating
While turning (RH/LH)
HeadlightON/OFF Rear defoggerON/OFF
BlowerON/OFF RadioON/OFF
A/C compressorON/OFF CD/CassetteON/OFF
Cooling fanON/OFF Car phoneON/OFF
Front wiperON/OFF CBON/OFF
Rear wiperON/OFF
86
2-7ON-BOARD DIAGNOSTICS II SYSTEM
6. Basic Diagnostic Procedure

10DC1
CHECK TRANSMISSION TYPE.
: Is transmission type AT?
: Go to step10DC2.
: Check AT/MT identification circuit. [T10DD0].>
10DC2
CHECK DRIVING CONDITION.
1) Start and warm-up the engine until the radiator fan
makes one complete rotation.
2) Drive the vehicle.
: Is AT shift control functioning properly?
: Go to step10DC3.
: Replace TCM.
10DC3
CHECK ACCESSORY.
: Are car phone and/or CB installed on
vehicle?
: Repair grounding line of car phone or CB system.
: Replace TCM.
420
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

5. CHECK SOURCES OF SIGNAL NOISE.
1) Check that the mobile phone, personal radio and other
wireless apparatus are correctly installed.
2) Check that the antenna and other possible noise
sources are distant enough from the sensor harness.
3) Check that the sealed wires of the front harness sensor
(in the engine room) are securely grounded.
4) Check that between ABS/TCS control module and the
rear sensor harness has the correct twist pitch.
Twist pitch:
25 mm (0.98 in) or less
6. CHECK HYDRAULIC UNIT OPERATIONS.
1) Operate the ABS sequence control and check that the
brake fluid pressure at the malfunctioning brake line
increases and decreases properly.
45
4-4bBRAKES
8. Diagnostics Chart with Trouble Code

8C7CHECK POOR CONTACT IN CONNEC-
TOR BETWEEN ABSCM AND ABS SEN-
SOR.
: Is there poor contact in connectors between
ABSCM and ABS sensor?
: Repair connector.
: Go to step8C8.
8C8
CHECK SOURCES OF SIGNAL NOISE.
: Is the car telephone or the wireless trans-
mitter properly installed?
: Go to next.
: Properly install the car telephone or the wireless
transmitter.
: Are noise sources (such as an antenna)
installed near the sensor harness?
: Install the noise sources apart from the sensor
harness.
: Go to step8C9.
B4M1038A
8C9
CHECK SHIELD CIRCUIT.
1) Connect all connectors.
2) Measure resistance between shield connector and
chassis ground.
: Trouble code/Connector & terminal
22/(B100) No. 11—Chassis ground
24/(B100) No. 2—Chassis ground
26/(P1) No. 8—Chassis ground
28/(P1) No. 3—Chassis ground
Is resistance less than 0.5Ω?
: Go to step8C10.
: Repair shield harness.
40
4-4cBRAKES [ABS 5.3 TYPE]
8. Diagnostics Chart with Trouble Code

B4M0838A
8G1
CHECK GROUND CIRCUIT OF ABSCM.
1) Turn ignition switch to OFF.
2) Disconnect connector from ABSCM.
3) Measure resistance between ABSCM and chassis
ground.
: Connector & terminal
(F49) No. 1—Chassis ground
(F49) No. 55—Chassis ground
Is resistance less than 0.5Ω?
: Go to step8G2.
: Repair ABSCM ground harness.
8G2CHECK POOR CONTACT IN CONNEC-
TORS BETWEEN BATTERY, IGNITION
SWITCH AND ABSCM.
: Is there poor contact in connectors between
battery, ignition switch and ABSCM?
: Repair connector.
: Go to step8G3.
8G3
CHECK SOURCES OF SIGNAL NOISE.
: Is the car telephone or the wireless trans-
mitter properly installed?
: Go to next.
: Properly install the car telephone or the wireless
transmitter.
: Are noise sources (such as an antenna)
installed near the sensor harness?
: Install the noise sources apart from the sensor
harness.
: Go to step8G4.
60
4-4cBRAKES [ABS 5.3 TYPE]
8. Diagnostics Chart with Trouble Code