1995 SUBARU LEGACY fuse diagram

1CLASSIFY THE MALFUNCTION. IS IT A
TROUBLE SYMPTOM 1 OR TROUBLE SYMP-
TOM 2?
If the malfunction shows TROUBLE SYMPTOM 1, go to
step 2.
If the malfunction shows TROUBLE SYMPTOM 2, go to
step 4.
OBD0095A
2
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2) Measure voltage between ECM and body.
: Connector & terminal
(B84) No. 31 — Body/1 V, or less
: Go to step 3.
:
If MIL comes on when shaking or pulling ECM
connector and harness, repair ECM connector.

Check that ECM connector is correctly con-
nected. If the MIL does not come on even when
ECM connector is correctly connected, replace
the ECM.
OBD0096
3CHECK HARNESS CONNECTOR BETWEEN
ECM AND IGNITION SWITCH.
Check the following and repair if necessary.

1Check that fuse (No. 15) is not blown out.
NOTE:
If replaced fuse (No. 15) blows out easily, check the har-
ness for short circuit between fuse (No. 15) and combina-
tion meter.

2Check that harness from fuse to combination meter is
not open.

3Check that the MIL wiring is not open.

4Check that harness from combination meter to the ECM
is not open.

5Check that the connector (B37) is correctly connected
as the wiring diagram shows.
105
2-7ON-BOARD DIAGNOSTICS II SYSTEM
8. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)

2. Basic Diagnostics Procedures
The most important purpose of diagnostics is to determine
which part is malfunctioning quickly, to save time and labor.
A: IDENTIFICATION OF TROUBLE SYMPTOM
Determine what the problem is based on the symptom.
B: PROBABLE CAUSE OF TROUBLE
Look at the wiring diagram and check the system’s circuit.
Then check the switch, relay, fuse, ground, etc.
C: LOCATION AND REPAIR OF TROUBLE
1) Using the diagnostics narrow down the causes.
2) If necessary, use a voltmeter, ohmmeter, etc.
3) Before replacing certain component parts (switch, relay,
etc.), check the power supply, ground, for open wiring
harness, poor connectors, etc. If no problems are
encountered, check the component parts.
D: CONFIRMATION OF SYSTEM OPERATION
After repairing, ensure that the system operates properly.
G6M0206
E: INSPECTION
1. VOLTAGE MEASUREMENT
1) Using a voltmeter, connect the negative lead to a good
ground point or negative battery terminal and the positive
lead to the connector or component terminal.
2) Contact the positive probe of the voltmeter on connec-
tor (A).
The voltmeter will indicate a voltage.
3) Shift the positive probe to connector (B). The voltmeter
will indicate no voltage.
With test set-up held as it is, turn switch ON. The voltme-
ter will indicate a voltage and, at the same time, the light
will come on.
4) The circuit is in good order. If a problem such as a lamp
failing to light occurs, use the procedures outlined above to
track down the malfunction.
8
6-3WIRING DIAGRAM
2. Basic Diagnostics Procedures

G6M0208
3. HOW TO DETERMINE AN OPEN CIRCUIT
1) Voltmeter method
An open circuit is determined by measuring the voltage
between respective connectors and ground using a
voltmeter, starting with the connector closest to the power
supply. The power supply must be turned ON so that cur-
rent flows in the circuit. If voltage is not present between a
particular connector and ground, the circuit between that
connector and the previous connector is open.
G6M0209
2) Ohmmeter method
Disconnect all connectors affected, and check continuity in
the wiring between adjacent connectors. When the ohm-
meter indicates“infinite”, the wiring is open.
G6M0210
4. HOW TO DETERMINE A SHORT-CIRCUIT
1) Test lamp method
Connect a test lamp (rated at approximately 3 watts) in
place of the blown fuse and allow current to flow through
the circuit. Disconnect one connector at a time from the
circuit, starting with the one located farthest from the power
supply. If the test lamp goes out when a connector is
disconnected, the wiring between that connection and the
next connector (farther from the power supply) is shorted.
G6M0211
2) Ohmmeter method
Disconnect all affected connectors, and check continuity
between each connector and ground. When ohmmeter
indicates continuity between a particular connector and
ground, that connector is shorted.
10
6-3WIRING DIAGRAM
2. Basic Diagnostics Procedures

4. How to Use Wiring Diagram
B6M0213A
A: RELAY
A symbol used to indicate a relay.
B: CONNECTOR-1
The sketch of the connector indicates the one-
pole types.
C: WIRING CONNECTION
Some wiring diagrams are indicated in foldouts
for convenience. Wiring destinations are indi-
cated where necessary by corresponding sym-
bols (as when two pages are needed for clear
indication).
D: FUSE No. & RATING
The“FUSE No. & RATING”corresponds that
used in the fuse box (main fuse box, and joint
box).
E: CONNECTOR-2
1. Each connector is indicated by a symbol.
2. Each terminal number is indicated in the cor-
responding wiring diagram in an abbreviated
form.
3. For example, terminal number“C2”refers to
No. 2 terminal of connector (C:F41) shown in
the connector sketch.
13
6-3WIRING DIAGRAM
4. How to Use Wiring Diagram

ABBREVIATION LIST
Abbr. Full name
A.B.S. Antilock Brake System
ACC Accessory
A/C Air Conditioning
AD Auto Down
AT Automatic Transmission
AU Auto Up
+B Battery
DN Down
DRL Daytime Running Light
E Ground
F/B Fuse & Joint Box
FL1.5 Fusible link 1.5 mm
2
IG Ignition
Illumi. Illumination
Abbr. Full name
LH Left Hand
Lo Low
M Motor
M/B Main Fuse Box
MG Magnet
Mi Middle
OP Optional Parts
PASS Passing
RH Right Hand
SBF Slow Blow Fuse
S.M.J. Super Multiple Junction
ST Starter
SW Switch
T.C.S. Traction Control System
UP Up
WASH Washer
17
6-3WIRING DIAGRAM
5. How to Use Super Multiple Junction (S.M.J.)

No. Load
MB-1 Fuse holder (Rear power supply)
MB-2 Power window circuit breaker
MB-3Engine control module
Fuel pump relay
Main relay
OBD-II service connector
MB-4 A/C relay holder
MB-5 Headlight alarm relay (with security)
MB-6 Headlight LH
MB-7Combination meter
Daytime running light control module
Diode (Lighting)
Diode (Security)
Lighting switch
Luggage room light
Room light
Step light
Trunk room light
MB-8Combination meter
Front fog light switch
Headlight RH
MB-9Door lock timer
Headlight alarm relay
Interrupt relay
Radio
Security control module
Security indicator light
Spot light
MB-10 A/C relay holder
SBF-6Hydraulic unit (A.B.S.)
T.C.S. motor relay
SBF-7 T.C.S. valve relay
ALT-1Combination meter
Daytime running light control module
IG Headlight alarm relay
STCruise control module
Engine control module
Inhibitor switch (AT)
Interrupt relay
Starter interlock relay (MT)
FB-1Front washer motor
Rear washer motor
FB-2 Diode (A/C)
FB-3Sub fan motor
Sub fan relay-2
FB-4Engine control module
Fuel pump relay
Transmission control module
FB-5 Hydraulic unit (A.B.S.)
FB-6Front clearance light LH
Front clearance light RH
Side marker light LH
Side marker light RHNo. Load
FB-7 Door lock timer
FB-9 Hazard switch
FB-10AT shift lock control module
Key warning switch
Power antenna
FB-11 Radio
FB-12 Cigarette lighter
FB-13Remote control rearview mirror switch
Security control module
Vanity mirror illumination light
FB-14AT shift lock control module
Combination switch
Front wiper motor
Rear wiper motor
Rear wiper relay
FB-15A.B.S./T.C.S. control module
Transmission control module
FB-16Rear defogger
Rear defogger condenser
Rear defogger switch
FB-17 Rear defogger switch
FB-18AT shift lock control module
Back-up light switch (MT)
Inhibitor switch (AT)
FB-19 Hazard switch
FB-20A/C switch
Combination meter
Mode control panel
T.C.S. off switch
FB-21 Combination meter (Airbag)
FB-22Blower motor relay
Check connector
Daytime running light control module
Daytime running light relay
FRESH/RECIRC actuator
Hi-beam relay
Power window and sunroof relay
Seat belt timer
FB-23 Airbag control module
FB-24 Airbag control module
FB-25 Lighting switch
FB-26 Parking switch
FB-27 Parking switch
FB-28 Illumination light
FB-29 Illumination light
FB-30Pedal stroke sensor
Stop light switch
Stop & brake switch
FB-31 Horn relay
FB-32 Blower motor relay
FB-33 Parking switch
20
6-3WIRING DIAGRAM
6. Wiring Diagram

7. Electrical Unit Location
Electrical unit Refer to;
A.B.S. control module 4-4a [T300]
A.B.S. G sensor (MT) 4-4a [T300]
A/C compressor relay
7
A/C fuse11
A/C main fan relay 110
A/C main fan relay 28
A/C pressure switch2
A/C sub fan relay 29
ATF temperature sensor 2-7 [T2B1]
Blower motor resistor
26
Blower relay13
Camshaft position sensor 2-7 [T2A2]
Check connector
25
Clutch switch (MT) 6-2 [T300]
Crankshaft position sensor 2-7 [T2A2]
Cruise control module 6-2 [T300]
Cruise control pump 6-2 [T300]
Data link connector (for OBD-II G.S.T.) 2-7 [T2A1]
Data link connector (for S.S.M.) 2-7 [T2A1]
Diagnosis connector 4-4a [T300]
Diagnosis terminal (Ground) 4-4a [T300]
Door lock timer
27
Engine control module 2-7 [T2A1]
Engine coolant temperature sensor 2-7 [T2A2]
Engine hood switch (Security) 6-2 [K6A0]
Evaporator thermoswitch
29
F/B15
FRESH/RECIRC actuator28
Fuel pump relay 2-7 [T2A3]
Fuel gauge module
31
Fuel gauge sub module (AWD)32
FWD switch (AT)1
Headlight alarm relay (Security) 6-2 [K6A0]
Headlight relay LH
5
Headlight relay RH6
Horn relay14
Electrical unit Refer to;
Hydraulic unit (A.B.S.) 4-4a [T300]
Ignition coil 2-7 [T2A3]
Ignitor 2-7 [T2A3]
Idle air control solenoid valve 2-7 [T2A3]
Illumination control module
21
Inhibitor switch 6-2 [T300]
Knock sensor 2-7 [T2A2]
Main fan relay
19
Main relay 2-7 [T2A3]
Mass air flow sensor 2-7 [T2A2]
Mode actuator
12
M/B4
Oil pressure switch3
Oxygen sensor 2-7 [T2A2]
Pedal stroke sensor (T.C.S.) 4-4b [T300]
Power window and sunroof relay
24
Power window circuit breaker23
Purge control solenoid valve 2-7 [T2A3]
Rear defogger relay
17
Seat belt timer20
Security control module 6-2 [K6A0]
Shift lock control module
22
Starter interrupt relay (Security) 6-2 [K6A0]
Stop & brake switch (With cruise con-
trol)6-2 [T300]
Sunroof control module
30
Tail and illumination relay18
T.C.S. control module 4-4b [T300]
T.C.S. motor relay 4-4b [T300]
T.C.S. valve relay 4-4b [T300]
Throttle position sensor 2-7 [T2A2]
Test mode connector 2-7 [T2A1]
Transmission control module 2-7 [T2B1]
Turn & hazard module
16
Vehicle speed sensor 1 2-7 [T2B1]
Vehicle speed sensor 2 2-7 [T2B1]
104
6-3WIRING DIAGRAM
7. Electrical Unit Location

1. ENGINE ROOM
B2M0018D
1FWD switch (AT)

2A/C pressure switch

3Oil pressure switch

4M/B

5Headlight relay LH

6Headlight relay RH
7A/C compressor relay

8A/C main fan relay 2

9A/C sub fan relay 2

10A/C main fan relay 1

11A/C fuse
105
6-3WIRING DIAGRAM
7. Electrical Unit Location