Subaru 2009 IMPREZA, Service Manual

Page: 3426 / 3619

WI-7
Basic Diagnostic Procedure
WIRING SYSTEM
• The wire color code, which consists of two letters
(or three letters including Br or Lg), indicates the
standard color (base color of the wire covering) by
its first letter and the stripe marking by its second
letter.
• The table lists the nominal sectional areas and
allowable currents of the wires.
CAUTION:
When replacing or repairing a wire, be sure to
use the same size and type of the wire which
was originally used.
NOTE:
• The allowable current in the table indicates the
tolerable amperage of each wire at an ambient
temperature of 40°C (104°F).
• The allowable current changes with ambient
temperature. Also, it changes if a bundle of more
than two wires is used.
• Each unit is either directly grounded to the body
or indirectly grounds through a harness ground ter-
minal. Different symbols are used in the wiring dia-
gram to identify the two grounding systems.
• The ground points shown in the wiring diagram
refer to the following:
NOTE:
All wiring harnesses are provided with a ground
point which must be securely connected.
Nominal
sectional
area
No. of
strands/
strand
diameter
Outside
diameter of
wiring
Allowable
current
Amps/
40°C (104°F)
mm
2
mm
0.3 7/0.26 1.8 7
0.5 7/0.32 2.2 (or 2.0) 12
0.75 30/0.18 2.6 (or 2.4) 16
0.85 11/0.32 2.4 (or 2.2) 16
1.25 16/0.32 2.7 (or 2.5) 21
2 26/0.32 3.1 (or 2.9) 28
3 41/0.32 3.8 (or 3.6) 38
5 65/0.32 4.6 (or 4.4) 51
8 50/0.45 5.5 67
Y B
Black Marking color :
Reference color :
Yellow
WI-03797
Direct ground Indirect terminal
ground
B
WI-02750
: ABS
GROUND GA
: AIRBAG
GROUND GAB
: BODY
GROUND GB
: ENGINE
GROUND GE
: AIR PUMP
GROUND GP
: VDC
GROUND
GV
WI-17939