Yamaha XT660R, Service Manual

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ELEC
LIGHTING SYSTEM
EAS00781
TROUBLESHOOTING
Check:
1. main, headlight, and parking lighting fuses
2. battery
3. main switch
4. dimmer switch
5. pass switch
6. headlight relay
7. wiring connections
(of the entire lighting system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. seat
2. battery cover
3. side panels (left and right)
4. fuel tank side covers (left and right)
5. fuel tank
6. headlight assembly
• Troubleshoot with the following special
tool(s).
EAS00738
YES
NO
EAS00739
YES
NO
EAS00749
YES
NO
Any of the following fail to come on:
headlight, high beam indicator light, tail/
brake light, on auxiliary light.
Pocket tester
90890-03112
1. Main, headlight, and parking lighting fuses
• Check the main, headlight, and parking
lighting fuses for continuity.
Refer to “CHECKING THE FUSES” in
chapter 3.
• Are the main, headlight, and parking light-
ing fuses OK?
Replace the fuse(s).
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?
• Clean the battery
terminals.
• Recharge or
replace the battery.
3. Main switch
• Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the main switch OK?
Replace the main
switch/immobilizer
unit.