Yamaha TT-R90 Manuel D'atelier Du Proprietaire page 344

EC680000
CHARGING SYSTEM (TT-R90E)
EC681001
INSPECTION STEPS
If the battery is not charged, use the following inspection steps.
*1 Check fuse.
*2 Check battery.
Check each coupler and
wire connection.
Check charging voltage.
Check CDI magneto.
Replace rectifier/regulator.
*1 marked: Refer to "FUSE INSPECTION" section in the CHAPTER 3.
*2 marked: Refer to "BATTERY INSPECTION AND CHARGING" section in the CHAPTER 3.
NOTE:
Remove the following parts before inspection.
G
1) Seat
2) Rear fender
3) Fuel tank
Use the following special tool in this inspection.
G
Pocket tester:
YU-3112-C/90890-03112
CHARGING SYSTEM (TT-R90E)
OK
OK
OK
No good
Lighting coil
OK
No good
No good
No good
OK
No good
Inductive tachometer:
YU-8036-B
Engine tachometer:
90890-03113
6 - 15
– +
ELEC
Replace fuse and
check wire harness.
Recharge or replace.
Repair or replace.
Charging system is
good.
Replace.