Yamaha YZF-R1S Service Manual - Elec
8-29
YES
NO
S Clean the battery
terminals.
S Recharge or re-
place the battery.
EAS00749
3. Main switch
S Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.
S Is the main switch OK?
YES
NO
Replace the main
switch.
EAS00784
YES
NO
4. Dimmer switch
S Check the dimmer switch for continuity.
Refer to “CHECKING THE SWITCHES”.
S Is the dimmer switch OK?
The dimmer switch is
faulty. Replace the
left handlebar switch.
Minimum open-circuit voltage
12.8 V or more at 20
_C (68_F)
S Is the battery OK?
LIGHTING SYSTEM
ELEC
NOTE:
YES
NO
1. Main, turn and headlight fuses
S Check the main, turn and headlight fuses for
continuity.
Refer to “CHECKING THE FUSES” in chap-
ter 3.
S Are the main, turn and headlight fuses OK?
Replace the fuse(s).
2. Battery
S Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3.
EAS00739
EAS00781
TROUBLESHOOTING
Any of the following fail to light: headlight,
high beam indicator light, taillight, licence
light or meter light.
Check:
1. main, turn and headlight fuses
2. battery
3. main switch
4. dimmer switch
5. pass switch
6. headlight relay (on / off)
7. headlight relay (dimmer)
8. wiring connections
(of the entire lighting system)
SBefore troubleshooting, remove the following
part(s):
1. seat
2. fuel tank
3. side cowlings
STroubleshoot with the following special tool(s).
Pocket tester
90890-03112, YU-3112
EAS00738