Yamaha TT-R90(S), Owner'S Service Manual

Page: 348 / 364

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– +
ELEC
CHARGING SYSTEM (TT-R90E)
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
●
Couplers and leads connection
Rust/dust/looseness/short-circuit
→
Repair or replace.
CHARGING VOLTAGE INSPECTION
1. Start the engine.
2. Inspect:
●
Charging voltage
Out of specification
→
If no failure is
found in checking the source coil resis-
tance, replace the rectifier/regulator.
Tester (+) lead
→
Red lead 1
Tester (–) lead
→
Black lead 2
Charging
voltage
Tester selector
position
14.0 ~ 15.0 V at
5,000 r/min
DCV-20
W B
R Y / R
1
2
3. Inspect:
●
Lighting coil resistance
Out of specification
→
Replace.
Tester (+) lead
→
White lead 1
Tester (–) lead
→
Black lead 2
Lighting coil
resistance
Tester selector
position
0.64 ~ 0.96
Ω
at
20 ˚C (68 ˚F)
Ω ×
1
W Sb
Y B
1
2