Subaru Impreza 2003 Service Manual page 3315

D: SYMBOLS IN WIRING DIAGRAMS
A number of symbols are used in each wiring diagram to easily identify parts or circuits.
Example
RELAY
HEAD-
LIGHT
RELAY
RH
F39
HEADLIGHT LH
HIGH
SYMBOLS OF
LOW
WIRE
CONNECTION
HEADLIGHT RH
AND CROSSING
HIGH
LOW
DIMMER & PASSING
SWITCH
UP LOW PASS
HF
HU
HL
E
LIGHTING SWITCH
OFF
HC
TC
EL
DIODE
DIODE
GROUND
1. RELAY
A symbol used to indicate a relay.
2. CONNECTOR-1
The sketch of the connector indicates one-pole
types.
3. WIRING CONNECTION
Some wiring diagrams are indicated in foldouts for
convenience. Wiring destinations are indicated
where necessary by corresponding symbols (as
when two pages are needed for clear indication).
BASIC DIAGNOSTICS PROCEDURE
WIRE TRACING
MAIN FUSE BOX (M/B)
ON EXTENDED
A
P-SUP-02
WIRING DIAGRAMS
B
P-SUP-02
C
P-SUP-02
HEAD-
LIGHT
RELAY
LH
D
P-SUP-04
POWER SUPPLY
ROUTING
TO POWER SUPPLY ROUTING
FB-16
MB-10 MB-11
F/B FUSE NO. 11
M/B FUSE NO. 8 M/B FUSE NO. 9
(IG)
2 RL
1 R
3 YL
F23
2 LW LW 4 LW
1 R R 3 R
3 YL YL 2 YL
F7 F44 B61
REF. TO ST(MT)-01
REF. TO ST(AT)-01
8 LY
7 RY
17 YB
16 B
13 LY
B71
REF. TO FOG(H4)-01
1 YB
REF. TO FOG(H6)-01
2 RY
B112 P 17
R3 B99
R4
PARKING BRAKE
SWITCH
REF. TO GND-02
F68
SMJ
MB-5
HEADLIGHT
RELAY
F45
SMJ
B62
LW B1
R A1
B36
SMJ
P
B112
1 2
4. FUSE NO. & RATING
The "FUSE No. & RATING" corresponds with that
used in 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-11
WIRING SYSTEM
FUSE No. & RATING
CONNECTOR-1
F36 F38
M
P-SUP-04
L
P-SUP-04
K
P-SUP-04
J
P-SUP-04
I
P-SUP-03
H
P-SUP-03
G
P-SUP-04
F
P-SUP-03
E
P-SUP-04
FUSE &
RELAY
BOX (F/B)
A: B51
B: i5
C: B52
D: B152
E: B158
F: F40
G: F41
CONNECTOR-2
C: B52 G: F41 (GRAY) A: B51
1 2 3 1 2 3
4 5 6 7 4 5 6 7 8
F7 (BLACK) F44
(BLACK)
F23 1 2 3 4
5 6 7 8
2
1 3
CONNECTOR
SKETCH
WI-00116