Troubleshooting - Yamaha FZS1000N Service Manual

EAS00774

TROUBLESHOOTING

The battery is not being charged.
Check:
1. Main fuse
2. Battery
3. Charging voltage
4. Stator coil resistance
5. Wiring connections
(of the entire charging system)
NOTE:
S Before troubleshooting, remove the following
part(-s):
1) Seat
2) Fuel tank
3) Side cover
S Troubleshoot with the following special
tool(-s).
Inductive self-powered
tachometer
YU-8036-B
Pocket tester measurement
YU-03112-C
EAS00738
1. Main fuses
S Check the fuses for continuity.
Refer to "CHECKING THE FUSES" in
CHAPTER 3.
S Are the fuses OK?
YES
EAS00739
2. Battery
S Check the condition of the battery.
Refer to "CHECKING THE BATTERY" in
CHAPTER 3.
Minimum open-circuit voltage
12.8 V or more at 20_C (68_F)
S Is the battery OK?
NO
Replace the fuse (s).
CHARGING SYSTEM
YES
EAS00775
3. Charging voltage
S Connect
the
tachometer to the spark plug lead of cylinder
#1.
S Connect the pocket tester (DC 20 V) to the
battery as shown.
Positive tester probe !
Negative tester probe !
S Start the engine and let it run at approxi-
mately 5,000 r/min.
S Measure the charging voltage.
Charging voltage
14 V at 5,000 r/min
NOTE:
Make sure the battery is fully charged.
S Is the charging voltage within specification?
NO
8-28
ELEC
NO
S Clean the battery
terminals.
S Recharge
or
place the battery.
inductive self-powered
positive battery terminal
negative battery terminal
YES
The charging circuit
is OK.
re-