Troubleshooting; Checking The Signal System - Yamaha XP500 2001 Service Manual

EAS00794

TROUBLESHOOTING

S Any of the following fail to come on: turn
signal light, brake light or indicator light.
S The horn fails to sound.
Check:
1. Main, signal and ignition fuses
2. Battery
3. Main switch
4. Wiring connections
(of the entire signal system)
NOTE:
S Before troubleshooting, remove the following
part(-s):
1) Front cowling
2) Handlebar cover
S Troubleshoot with the following special tool(-s).
Pocket tester
90890-03112
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1. Main, signal and ignition fuses
S Check the main, signal and ignition fuses for
continuity.
Refer to "CHECKING THE FUSES" in
CHAPTER 3.
S Are the main, signal and ignition fuses OK?
YES
EAS00739
2. Battery
S Check the condition of the battery.
Refer to "CHECKING THE BATTERY" in
CHAPTER 3.
Open-circuit voltage
12.8 V or more at 20_C
S Is the battery OK?
YES
NO
Replace the fuse (-s).
NO
S Clean the battery
terminals.
S Recharge or
replace the battery.
SIGNAL SYSTEM
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3. Main switch
S Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the main switch OK?
YES
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4. Wiring
S Check the entire signal system's wiring.
Refer to "CIRCUIT DIAGRAM".
S Is the signaling system's wiring properly
connected and without defects?
YES
Check the condition
of each of the signal
system's circuits.
Refer to "CHECKING
THE SIGNALING
SYSTEM".
EAS00796

CHECKING THE SIGNAL SYSTEM

1. The horn fails to sound.
1. Horn switch
Refer to "CHECKING THE SWITCHES".
YES
2. Voltage
S Connect the pocket tester (20 V DC) to the
horn lead (at the horn terminal) as shown.
8-39
ELEC
NO
Replace the main
switch.
NO
Properly connect or
repair the signal
system's wiring.
NO
Replace the left han-
dlebar switch.