Yamaha Raptor 90 YFM90RA 2011 Service Manual page 217

EBS01040
7. Pickup coil resistance
• Disconnect the C.D.I. magneto coupler
from the wire harness.
• Connect the pocket tester (
pickup coil terminal as shown.
Positive tester probe
white/black terminal
Negative tester probe
B/R B/G
• Measure the pickup coil resistance.
Pickup coil resistance
Ω
94 ~ 140
(between white/red and white/
blue)
• Is the pickup coil OK?
YES
Ω ×
100) to the
→
1
→
white/red terminal
2
1
W W/B
/R
W W
2
at 20 °C (68 °F)
NO
Replace the pickup
coil/stator assembly.
7 - 8
IGNITION SYSTEM
EBS01099
8. Source coil resistance
• Disconnect the C.D.I. magneto coupler
from the wire harness.
• Connect the pocket tester (
source coil terminal.
Positive tester probe
black/green terminal
Negative tester probe
B/R B/G
2
• Measure the source coil resistance.
Source coil resistance
640 ~ 960
(black/red and green/white)
YES
EBS01047
9. Wiring
• Check the entire ignition system's wiring.
Refer to "CIRCUIT DIAGRAM".
• Is the ignition system's wiring properly
connected and without defects?
YES
Replace the C.D.I.
unit.
ELEC
– +
Ω ×
100) to the
→
1
→
black/red terminal
2
W W/B
W W /R
1
Ω
at 20 °C (68 °F)
NO
Replace the pickup
coil/stator assembly.
NO
Properly connect or
repair the ignition
system's wiring.