Yamaha 2005 BT1100 Supplementary Service Manual page 74

3. Ignition coil N. 1 and 2
1. Wiring
• Check the entire ignition system's wiring.
Refer to "CIRCUIT DIAGRAM".
• Is the ignition system's wiring properly con-
nected and without defects?
YES
EAS00747
2. Ignition coil resistance
The following procedure applies to all of the
ignition coils.
• Disconnect the ignition coil connectors from
the ignition coil terminals.
• Connect the pocket tester (
tion coil as shwon.
Tester positive probe
Tester negative probe
• Measure the primary coil resistance.
Primary coil resistance
3.57 4.83
• Connect the pocket tester (
ignition coil as shown.
• Measure the secondary coil resistance.
Tester positive probe
Tester negative probe
NO
Repair or replace the
wire harness.
1) to the igni-
¡
Red/Black
¡
Orange (Gray)
at 20°C (68 °F)
1k) to the
¡
spark plug lead 1
¡
Orange (gray) lead 2
SELF-DIAGNOSIS DEVICE
Secondary coil resistance
10.7
• Is the ignition coil OK?
YES
Replace the ignitor
unit.
66
ELEC
14.5 k at 20°C (68°F)
NO
Replace the ignition
coil.