Troubleshooting; Checking The Signaling System - Yamaha YZF-R1P Service Manual

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TROUBLESHOOTING

• Any of the following fail to light: turn
signal light, brake light or an indicator
light.
• The horn fails to sound.
Check:
1. main, ignition, signaling and back up fuses
2. battery
3. main switch
4. wiring connections
(of the entire signaling system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. seat
2. fuel tank
3. bottom cowling
4. side cowlings
5. tail cowling
• Troubleshoot with the following special
tool(s).
Pocket tester
YM-03112
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1. Main, ignition, signaling and back up fuses
• Check the main, ignition, signaling and
back up fuses for continuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main, ignition, signaling and back
up fuses OK?
YES
SIGNALING SYSTEM
NO
Replace the fuse(s).
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2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20 °C (68 °F)
• Is the battery OK?
YES
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3. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
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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
– +
ELEC
NO
• Clean the battery
terminals.
• Recharge or
replace the bat-
tery.
NO
Replace the main
switch.
NO
Replace the left han-
dlebar switch.