Subaru Legacy (2005 year). Service manual — part 1054
WI-9
WIRING SYSTEM
Basic Diagnostic Procedure
• Each connector number shown in the wiring dia-
gram corresponds to that in the wiring harness. The
location of each connector in the actual vehicle is
determined by reading the first character of the
connector (for example, a “F” for F8, “i” for i16, etc.)
and the type of wiring harness. The first character
of each connector number corresponds to the area
or system of the vehicle.
Symbol
Wiring harness and cord
F
Front wiring harness
B
Bulkhead wiring harness
E
Engine wiring harness
T
Transmission cord
D
Door cord LH & RH, Rear gate cord
Rear door cord LH & RH, Rear defogger cord
i
Instrument panel wiring harness
R
Rear wiring harness,
Fuel tank cord,
Roof cord, Rear gate cord,
Rear defogger ground cord (Sedan model)
AB
Airbag wiring harness
F23
F98
F21
F58
F100
F5
F27
F47
F34
F19
F22
F96
WI-02753
Each connector number
shown in wiring diagram
corresponds to that in
the vehicle.
F19
FRONT TURN SIGNAL
LIGHT LH (UPPER)
BG
2
B
1
F22
FRONT TURN SIGNAL
LIGHT LH (LOWER)
BG
3
B
2
(GRAY)
F3
(GRAY)
F19
1 2
WI-10
WIRING SYSTEM
Basic Diagnostic Procedure
D: SYMBOLS IN WIRING DIAGRAMS
A number of symbols are used in each wiring diagram to easily identify parts or circuits.
1. RELAY
A symbol used to indicate a relay.
2. CONNECTOR 1
The sketch of the connector indicates the one-pole
types.
3. WIRING CONNECTION
Some wiring diagrams are indicated in foldouts for
convenience. Wiring destinations are indicated
where necessary by corresponding symbols.
(When two pages are needed for clear indication)
4. FUSE No. & RATING
The “FUSE No. & RATING” corresponds with that
used in the fuse box (main fuse box, fuse and joint
box).
5. CONNECTOR 2
• Each connector is indicated by a symbol.
• Each terminal number is indicated in the corre-
sponding wiring diagram in an abbreviated form.
• For example, terminal number “G4” refers to No.
4 terminal of connector (G: F41) shown in the con-
nector sketch.
WI-04721
LR
LW
RL
3
7
2
5
MAIN FUSE BOX (M/B)
MB-11
MB-10
F39
P-SUP-02
B
P-SUP-02
A
P-SUP-02
C
No.3 10A
No.9 15A
No.8 15A
SBF-1 100A
HEAD-
LIGHT
RELAY
RH
HEAD-
LIGHT
RELAY
LH
G
P-SUP-04
D
H/L(2L)-01
RL
LW
GR
LB
TO POWER SUPPLY CIRCUIT
MB-10
M/B FUSE NO. 8
MB-11
M/B FUSE NO. 9
FB-16
F/B FUSE NO. 11
(IG)
MB-5
HEADLIGHT
RELAY
LW
4
R
3
YL
LW
R
YL
2
YB
1
RY
2
LW
2
R
1
YL
3
P
LW
B1
R
A1
F44
F45
F23
F7
B61
B62
B
RL
2
R
1
YL
3
B71
B112
LY
8
RY
7
YB
B
17
16
3
17
16
UP LOW PASS
HF
HU
HL
E
SMJ
LB
H1
B36
SMJ
DIODE
: WITHOUT REAR DEFOGGER
: WITH REAR DEFOGGER
PARKING
BRAKE
SWITCH
R4
OFF
HC
TC
EL
LOW
HIGH
HEADLIGHT RH
HEADLIGHT LH
LIGHTING SWITCH
DIMMER & PASSING
SWITCH
LOW
HIGH
B51
A:
B52
C:
F41
G:
(GRAY)
(BLACK)
(BLACK)
FB-37
D4
D7
BG
D11
A2
WR
G4
BL
G1
BR
D10
FB-35
FB-34
1
2 3
4 5 6 7
1 2
3
4 5 6 7 8
LgB
Or
FUSE &
RELAY
BOX
(F/B)
i5
B:
B51
A:
B152
D:
B52
C:
B158
E:
F41
G:
F40
F:
FB-36
A3
BG
G7
No.5 10A
P-SUP-03
H
P-SUP-03
F
P-SUP-04
K
P-SUP-04
J
No.1 20A
No.2 15A
SBF-6 30A
LR
2
R
3
L
1
R
3
BW
2
W
SBF-2 50A
SBF-3 50A
SBF-4 50A
F36
F38
F68
P-SUP-04
E
P-SUP-04
M
P-SUP-04
L
P-SUP-03
I
P-SUP-04
G
1 2 3 4
5 6 7 8
F44
B112
1 2
F23
1
2
3
F7
SPECIFICATION
CLASSIFICATION
SPECIFICATION
CLASSIFICATION
2
LY
13
13
WR
OR
OR
WR
REF. TO FOG (H4)-01
REF. TO ST (MT)-01
REF. TO ST (AT)-01
REF. TO FOG (H6)-01
REF. TO GND-02
CONNECTOR-1
FUSE No. & RATING
CONNECTOR-2
CONNECTOR SKETCH
RELAY
WIRE TRACING
ON EXTENDED
WIRING DIAGRAMS
Example
DIODE
GROUND
POWER SUPPLY
CIRCUIT
SMJ
SYMBOLS OF
WIRE
CONNECTION
AND CROSSING
P
P
17
R3
B99
P
P
7
R1
B97
WG
WG
SD
SD
: WAGON
: SEDAN
SD
WG
HR
HARNESS
REPAIR KIT
WI-11
WIRING SYSTEM
Basic Diagnostic Procedure
6. CONNECTOR SKETCH
• Each connector sketch clearly identifies the
shape and color of a connector as well as terminal
locations. Non-colored connectors are indicated in
natural color.
• When more than two types of connector number
are indicated in a connector sketch, it means that
the same type connectors are used.
7. GROUND
Each grounding point can be located easily by re-
ferring to the corresponding wiring harness.
8. DIODE
A symbol is used to indicate a diode.
9. WIRE TRACING ON EXTENDED WIRING
DIAGRAMS
For a wiring diagram extending over at least two
pages, a symbol (consisting of the same characters
with arrows), facilitates wire tracing from one page
to the next.
A
←→ A, B ←→ B
10.SYMBOLS OF WIRE CONNECTION AND
CROSSING
11.POWER SUPPLY CIRCUIT
A symbol is used to indicate the power supply in
each wiring diagram.
“MB-5”, “MB-6”, etc., which are used as power-
supply symbols throughout the text, correspond
with those shown in the “POWER SUPPLY CIR-
CUIT” in the wiring diagram.
Accordingly, using the “POWER SUPPLY CIR-
CUIT” and wiring diagrams permits service person-
nel to understand the entire electrical arrangement
of a system.
12.CLASSIFICATION BY SPECIFICATION
When the wiring diagram differ according to vehicle
specifications, the specification difference is de-
scribed by using abbreviations.
13.HARNESS REPAIR KIT
The connector adapting to Harness repair kit is
shown as “HR” in the right-upper of connector num-
ber.
Refer to “Harness Repair Kit” for harness repair kit.
<Ref. to WI-380, SPECIFICATION, Harness Re-
pair Kit.>
WI-02755
Symbol
Symbol
Refers to wires which are
crossed but not connected.
Refers to wires which are
connected and branched
at the dot point.
WI-12
WIRING SYSTEM
Basic Diagnostic Procedure
E: CONNECTOR SYMBOL IN WIRING HARNESS
A number of connector symbols are used in each wiring diagram to easily identify the wiring harness con-
nectors.
WI-02756
Standard type: Female
Standard type: Male
Water proof type: Female
Water proof type: Male
Pole: From 1 to 8
Pole: From 9 to 20
Pole: More than 21
Pole: From 1 to 8
Pole: From 9 to 20
Pole: More than 21
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