Checking The Signaling System - Yamaha XV1600A1999 Service Manual

EB806410

CHECKING THE SIGNALING SYSTEM

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