Yamaha 25BMH, Service Manual

Page: 416 / 446

CHARGING SYSTEM
– +
ELEC
8-16
E
CHECKING THE LIGHTING COIL
1. Measure:
• Lighting coil resistance
Out of specification
→
Checking the
peak voltage.
Measuring steps
(1) Disconnect the Green (G) leads from
the wire harness.
(2) Connect the tester to the lighting coil as
shown.
NOTE:
When measuring the resistance of 10
Ω
or
less using the digital tester, the correct
measurement cannot be obtained.
Re f e r t o " M E AS U R I N G A LOW R E S I S -
TANCE" on page 8-3.
2. Measure:
• Lighting coil output peak voltage
Below specification
→
Replace.
Lighting coil resistance:
G – G
0.31 - 0.37
Ω Ω Ω Ω
Lighting coil output peak voltage
G – G
rrrr////m m m miiiin n n n
C
C C
Crrrra
a a
an
n n
nk
k k
kiiiing
ng ng
ng
O O O Op p p pe e e en n n ne e e ed d d d C
C C
Cllllo
o o
os
s s
se
e e
ed
d d
d
D D D D....C C C C....V V V V.... 4 4 4 4....6 6 6 6
—
rrrr////m
m m
miiiin
n n
n
1 1 1 1,,,,5 5 5 50 0 0 00 0 0 0 3 3 3 3,,,,5 5 5 50 0 0 00 0 0 0 1 1 1 1,,,,5 5 5 50 0 0 00 0 0 0 3 3 3 3,,,,5 5 5 50 0 0 00 0 0 0
C C C Cllllo o o os s s se e e ed d d d O O O Op p p pe e e en n n ne e e ed d d d
D
D D
D....C
C C
C....V
V V
V....
— —
1
1 1
14
4 4
4....7
7 7
7 3
3 3
30
0 0
0....0
0 0
0