Troubleshooting - Yamaha YZF-R6 Service Manual

EB804010

TROUBLESHOOTING

The battery is not being charged.
Check:
1. main fuse
2. battery
3. charging voltage
4. stator coil assembly resistance
5. wiring
(of the entire charging system)
NOTE:
S Before troubleshooting, remove the following
part(-s):
1) rider seat
2) fuel tank
S Troubleshoot with the following special
tool(-s).
Engine tachometer
90793-80009
Pocket tester
90890-03112
EB802400
1. Main fuse
S Check the main fuse for continuity.
Refer to "CHECKING THE FUSES" in chap-
ter 3.
S Is the main fuse OK?
YES
NO
Replace the fuse.
CHARGING SYSTEM
EB802401
2. Battery
S Check the condition of the battery.
Refer to "CHECKING AND CHARGING THE
BATTERY" in chapter 3.
Open-circuit voltage
12.8 V or more at 20_C
S Is the battery OK?
YES
EB804400
3. Charging voltage
S Connect the engine tachometer to the spark
plug lead of cylinder #1.
S Connect the pocket tester (DC 20 V) to the
battery as shown.
Tester positive probe !
Tester negative probe !
S Start the engine and let it run at approximate-
ly 5,000 r/min.
S Measure the charging voltage.
Charging voltage
14 V at 5,000 r/min
8-27
ELEC
NO
S Clean the battery
terminals.
S Recharge or
replace the battery.
battery positive terminal
battery negative terminal