Yamaha XV1600A1999, Service Manual

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7-39
E
YES NO
YES NO
1. Horn switch
Check the horn switch for continuity.
Refer to “CHECKING THE SWITCHES”.
Is the horn switch OK?
Replace the left han-
dlebar switch.
The horn is OK.
3. Horn
Disconnect the horn coupler at the horn.
Connect a jumper lead to the brown termi-
nal in the horn coupler and the horn terminal.
Connect a jumper lead to the horn termi-
nal and ground the jumper lead.
Set the main switch to “ON”.
Push the horn switch.
Does the horn sound?
4. Voltage
Connect the pocket tester (DC 20 V) to the
born coupler as shown.
YES NO
2. Voltage
Connect the pocket tester (DC 20 V) to the
horn coupler as shown.
The wiring circuit
from the main switch
to the horn connector
is faulty and must be
repaired.
Tester positive probe black / white
Tester negative probe ground
Set the main switch to “ON”.
Push the horn switch.
Measure the voltage (12 V) of brown on the
horn coupler.
Is the voltage within specification?
Tester positive probe black / red
Tester negative probe ground
YES NO
Replace the horn. Repair or replace the
horn.
Set the main switch to “ON”.
Measure the voltage (12 V) of pink on the
horn coupler.
Is the voltage within specification?
1
1
1
2
1
SIGNALING SYSTEM
ELEC
EB806410
CHECKING THE SIGNALING SYSTEM
1. The horn fails to sound.