IGNITION SYSTEM

CIRCUIT DIAGRAM

1.	Crankshaft position sensor
2.	AC magneto
3.	Rectifier/regulator
4.	Joint connector
6.	Engine ground
7.	Battery
8.	Frame ground
9.	Fuse
10.	Starter relay
11.	Starter motor
12.	Diode 1
13.	Diode 2
14.	CCU (Communication Control Unit)
16.	ECU (Engine Control Unit)
17.	Ignition coil
18.	Spark plug
25.	Engine stop switch
26.	Gear position switch
27.	Mode switch

The ignition system fails to operate (no spark or intermittent spark).

Before troubleshooting, remove the following part(s):

Check the ignition system wire harness connections.	NG→	Reconnect.
OK↓
Check the fuse(s). Refer to CHECKING THE FUSES.	NG→	Replace the fuse(s).
OK↓
Check the battery. Refer to CHECKING AND CHARGING THE BATTERY.	NG→	Clean the battery terminals. Recharge or replace the battery.
OK↓
Check the spark plug. Refer to CHECKING THE SPARK PLUG.	NG→	Correct or replace the spark plug.
OK↓
Check the ignition spark gap. Refer to CHECKING THE IGNITION SPARK GAP.	OK→	The ignition system circuit is OK.
NG↓
Check the ignition coil. Refer to CHECKING THE IGNITION COIL.	NG→	Replace the ignition coil.
OK↓
Check the engine stop switch. Refer to CHECKING THE SWITCHES.	NG→	Replace the engine stop switch.
OK↓
Check the crankshaft position sensor. Refer to CHECKING THE CRANKSHAFT POSITION SENSOR.	NG→	Replace the crankshaft position sensor.
OK↓
Check the stator coil assembly. Refer to CHECKING THE STATOR COIL.	NG→	Replace the stator coil assembly.
OK↓
Check the ignition system wire harness. Refer to CIRCUIT DIAGRAM.	NG→	Repair or replace the wire harness.
OK↓
Replace the ECU.

The mode switch to blink.

Before troubleshooting, remove the following part(s):

Check the mode switch coupler connections.	NG→	Reconnect.
OK↓
Check the mode switch. Refer to CHECKING THE SWITCHES.	NG→	Replace the mode switch.
OK↓
Check the ignition system wire harness. Refer to CIRCUIT DIAGRAM.	NG→	Repair or replace the wire harness.
OK↓
Replace the ECU.