Yamaha YZF-R6 99, Service Manual

Page: 372 / 400

8-38
Replace the left han-
dlebar switch.
NO
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.
Tester positive probe pink
Tester negative probe ground
1
The horn is OK.
YES
3. Horn
Disconnect the black connector at the horn
terminal.
Connect a jumper lead to the horn terminal
and ground the jumper lead.
Set the main switch to “ON”.
Push the horn switch.
Does the horn sound?
NO
4. Voltage
Connect the pocket tester (DC 20 V) to the
horn connector at the black terminal as
shown.
Tester positive probe black
Tester negative probe ground
1
Set the main switch to “ON”.
Push the horn switch.
Measure the voltage (12 V) of Pink at the horn
terminal.
Is the voltage within specification?
The wiring circuit
from the main switch
to the horn connector
is faulty and must be
repaired.
NO
YES
Set the main switch to “ON”.
Measure the voltage (12 V) of black at the
horn terminal.
Is the voltage within specification?
1
NO YES
Replace the horn. Repair or replace the
horn.
1
SIGNALING SYSTEM
ELEC
EB806410
CHECKING THE SIGNALING SYSTEM
1. The horn fails to sound.