Subaru IMPREZA GD 2007 Series Manual page 3678

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2. Horn System
A: WIRING DIAGRAM
1. HORN
<Ref. to WI-144, WIRING DIAGRAM, Horn Sys-
tem.>
B: INSPECTION
1. HORN RELAY
Measure the security horn relay resistance be-
tween terminals (indicated in the table below) when
connecting terminal No. 4 to battery positive termi-
nal and terminal No. 3 to battery ground terminal.
(1)
(2)
(2)
(3)
(3)
(4)
Continuity Terminal No.
Yes
1 and 2
No
Horn System
(1)
(4)
COM00001
Standard value
Less than 1 Ω
1 MΩ or more
COM-3
COMMUNICATION SYSTEM