Subaru Impreza 2002 Service Manual page 3444

2. Horn System
A: SCHEMATIC
1. HORN
<Ref. to WI-180, SCHEMATIC, Horn System.>
B: INSPECTION
1. HORN RELAY
Measure the horn relay resistance between termi-
nals (indicated in table below) when connecting ter-
minal No. 4 to battery positive terminal and terminal
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)
BO0308
Standard
Less than 1Ω
More than 1MΩ
COM-3
COMMUNICATION SYSTEM