Yamaha XV1700PCRC Service Manual page 518

EAS00796
2. The horn 2 fails to sound.
1. Horn switch
• Check the horn switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the horn switch OK?
YES
2. Voltage
• Connect the pocket tester (DC 20 V) to the
horn 2 coupler as shown.
Positive tester probe → brown 1
Negative tester probe → ground
• Set the main switch to "ON".
• Push the horn switch.
• Measure the voltage (DC 12 V) of brown
1 at the horn 2 coupler.
• Is the voltage within specification?
YES
SIGNALING SYSTEM
NO
Replace the left han-
dlebar switch.
NO
The wiring circuit
from the main switch
to the horn coupler is
faulty and must be
repaired.
7 - 48
3. Horn 2
• Disconnect the horn 2 coupler at the horn
2.
• Connect a jumper lead 1 to the brown ter-
minal in the horn coupler and the horn ter-
minal.
• Connect a jumper lead 2 to the horn ter-
minal and ground the jumper lead.
• Set the main switch to "ON".
• Push the horn switch.
• Does the horn 2 sound?
NO
Replace the horn 2.
EAS00797
3. The tail/brake light fails to come on.
1. Tail/brake light LED
• Check the LED of the tail/brake light.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
• Are the tail/brake light LED OK?
YES
– +
ELEC
YES
The horn 2 is OK.
NO
Replace the tail/
brake light assembly.