Checking The Signaling System - Yamaha XT660R 2004 Service Manual

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
EAS00796

CHECKING THE SIGNALING SYSTEM

1. The horn 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 connector at the horn terminal as
shown.
Positive tester probe → pink 1
Negative tester probe → ground
1
• Set the main switch to "ON".
• Push the horn switch.
• Measure the voltage (DC 12 V) of pink at
the horn terminal.
• Is the voltage within specification?
YES
email: info@motomatrix.co.uk
NO
Replace the left han-
dlebar switch.
P B
NO
The wiring circuit
from the main switch
to the horn connector
is faulty and must be
repaired.
SIGNALING SYSTEM
3. Horn
• Disconnect the black connector at the horn
terminal.
• Connect a jumper lead 1 to the horn ter-
minal and ground the jumper lead.
• Set the main switch to "ON".
• Push the horn switch.
• Does the horn sound?
YES
The horn is OK.
8 - 40
–
ELEC
P
1
NO
Replace the horn.
+