Subaru Impreza 2003 Service Manual page 2997

2. Horn System
A: SCHEMATIC
1. HORN
<Ref. to WI-181, SCHEMATIC, Horn System.>
B: INSPECTION
1. HORN RELAY
Measure the horn relay resistance between termi-
nals (indicated in table below) when connecting the
terminal No. 4 to battery positive terminal and ter-
minal No. 3 to battery ground cable.
(1)
(2)
(2)
(3)
(4)
Current Terminal No.
Flow
1 and 2
No Flow
HORN SYSTEM
(1)
(3) (4)
COM00001
Standard
Less than 1 Ω
More than 1 MΩ
COM-3
COMMUNICATION SYSTEM