Yamaha yz250f A 2011, Owner'S Service Manual

Page: 181 / 196

6-5
IGNITION SYSTEM
2. Inspect:
• Charging coil 1 resistance
Out of specification
→
Replace.
3. Inspect:
• Charging coil 2 resistance
Out of specification
→
Replace.
CHECKING THE NEUTRAL
SWITCH
1. Inspect:
• Neutral switch conduction
Not conductive while it is in neutral
→
Replace.
Conductive while it is engaged
→
Re-
place.
Set the tester selection position to "
Ω
× 1".
CHECKING THE CDI UNIT
Check all electrical components. If no
fault is found, replace the CDI unit.
Then check the electrical compo-
nents again.
Tester (+) lead
→
Brown lead "1"
Tester (-) lead
→
Green lead "2"
Charging
coil 1 resis-
tance
Tester se-
lector posi-
tion
720-1,080
Ω
at 20 °C
(68 °F)
Ω
×100
Tester (+) lead
→
Pink lead "1"
Tester (-) lead
→
Black lead "2"
Charging
coil 2 resis-
tance
Tester se-
lector posi-
tion
44-66
Ω
at
20 °C (68
°F)
Ω
×10
B
W Br
G
P
R
B
W Br
G
P
R
Tester (+) lead
→
Sky blue lead "1"
Tester (-) lead
→
Ground "2"
Result
Conductive (while gear
is in neutral)