Yamaha FZS6W 07 User Manual

IGNITION SYSTEM
8-1
EAS27090
IGNITION SYSTEM
EAS27110
CIRCUIT DIAGRAM 

IGNITION SYSTEM
8-2
1. Main switch
6. Main fuse
9. Battery
10.Starting circuit cut-off relay
11.Sidestand switch
12.Neutral switch
17.Lean angle sensor
18.Crankshaft position sensor
21.ECU (engine control unit)
28.Cylinder-#1/#4 ignition coil
29.Cylinder-#2/#3 ignition coil
30.Spark plug
46.Engine stop switch
53.Ignition fuse
60.Clutch switch 

IGNITION SYSTEM
8-3
EAS27140
TROUBLESHOOTING
The ignition system fails to operate (no spark or intermittent spark).
NOTE:
 Before troubleshooting, remove the following part(s):
1. Seat
2. Fuel tank
3. Side cowlingsNG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
1. Check the fuses.
(Main and ignition)
Refer to CHECKING THE FUSES 
on page 8-67. Replace the fuse(s).
2. Check the battery. Refer to CHECKING AND 
CHARGING THE BATTERY on 
page 8-68.  Clean the battery terminals.
 Recharge or...

IGNITION SYSTEM
8-4
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
8. Check the engine stop switch.
Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the right handlebar switch.
9. Check the neutral switch. Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the neutral switch.
10.Check the sidestand switch. Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the sidestand switch.
11.Check the clutch switch. Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the clutch...

ELECTRIC STARTING SYSTEM
8-5
EAS27160
ELECTRIC STARTING SYSTEM
EAS27170
CIRCUIT DIAGRAM 

ELECTRIC STARTING SYSTEM
8-6
1. Main switch
6. Main fuse
7. Starter relay
8. Starter motor
9. Battery
10.Starting circuit cut-off relay
11.Sidestand switch
12.Neutral switch
46.Engine stop switch
47.Start switch
53.Ignition fuse
60.Clutch switch 

ELECTRIC STARTING SYSTEM
8-7
EAS27180
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION
If the engine stop switch is set to “ ” and the main switch is set to “ON” (both switches are closed), 
the starter motor can only operate if at least one of the following conditions is met:
 The transmission is in neutral (the neutral switch is closed).
 The clutch lever is pulled to the handlebar (the cl utch switch is closed) and the sidestand is up (the 
sidestand switch is closed).
The starting circuit cut-off relay...

ELECTRIC STARTING SYSTEM
8-8
EAS27190
TROUBLESHOOTING
The starter motor fails to turn.
NOTE:
 Before troubleshooting, remove the following part(s):
1. Seat
2. Front cowling inner panel
3. Fuel tank
4. Left side coverNG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
1. Check the fuses.
(Main and ignition)
Refer to CHECKING THE FUSES 
on page 8-67. Replace the fuse(s).
2. Check the battery. Refer to CHECKING AND 
CHARGING THE BATTERY on 
page 8-68.  Clean the battery terminals.
 Recharge...

ELECTRIC STARTING SYSTEM
8-9
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
NG→
OK ↓
8. Check the neutral switch.
Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the neutral switch.
9. Check the sidestand switch. Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the sidestand switch.
10.Check the clutch switch. Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the clutch switch.
11.Check the start switch. Refer to CHECKING THE 
SWITCHES on page 8-63. Replace the right handlebar switch.
12.Check the...