Engine Stopping Due To Sidestand Operation - Yamaha XV19SW Service Manual

ET1D71043

ENGINE STOPPING DUE TO SIDESTAND OPERATION

When the engine is running and the transmission is in gear, the engine will stop if the sidestand is
moved down. This is because the electric current from the ignition coils does not flow to the ECU when
both the neutral switch and sidestand switch are set to "OFF", thereby preventing the spark plugs from
producing a spark. However, the engine continues to run under the following conditions:
• The transmission is in gear (the neutral switch circuit is open) and the sidestand is up (the sidestand
switch circuit is closed).
• The transmission is in neutral (the neutral switch circuit is closed) and the sidestand is down (the sid-
estand switch circuit is open).
1. Battery
2. Main fuse
3. Main switch
4. Ignition fuse
5. Engine stop switch
6. Ignition coil
7. Spark plug
8. ECU (electronic control unit)
9. Sidestand switch
10. Relay unit (diode)
11. Neutral switch
2
1
3
10
8
11 9
7-3
IGNITION SYSTEM
4
5
6
7