Subaru Impreza 2003 Service Manual page 3310

WIRING SYSTEM
C: HOW TO READ WIRING DIAGRAMS
1. WIRING DIAGRAM
The wiring diagram of each system is illustrated so that you can understand the path through which electric
current flows from battery.
Sketches and codes are used in the diagrams. They should read as follows:
• Each connector and its terminal position are indicated by a sketch of the connector in a disconnected state
which is viewed from front.
4
Viewed from this direction
• The number of poles or pins, presence of a lock, and pin number of each terminal are indicated in the
sketch of each connector. In the sketch, the highest pole number refers to the number of poles which con-
nector has. For example, the sketch of connector shown in the figure indicates the connector has 9 poles.
Connector used in vehicle
BASIC DIAGNOSTICS PROCEDURE
1 2
3 4
WI-00101
Sketch
Double frames
Indicates a lock
is included.
4 3 1
2
9 8
7 6 5
Indicates the number of poles.
Indicates a lock is included.
1 2 3 4
5 6 9
7 8
Single frame
WI-6
Connector shown in wiring diagram
Symbol Number of poles
Numbered in order from upper
right to lower left.
Numbered in order from upper
left to lower right
WI-00102