Yamaha YZF-R1 Series Service Manual page 440

8. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-40.
OK ↓
9. Check the start/engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-40.
OK ↓
10.Check the neutral switch.
Refer to "CHECKING THE
SWITCHES" on page 8-40.
OK ↓
11.Check the sidestand switch.
Refer to "CHECKING THE
SWITCHES" on page 8-40.
OK ↓
12.Check the relay unit (diode).
Refer to "CHECKING THE RELAY
UNIT (DIODE)" on page 8-43.
OK ↓
13.Check the entire ignition system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-1.
OK ↓
Replace the ECU or IMU.
Refer to "REPLACING THE ECU (En-
gine Control Unit)" on page 8-41.
NG →
Replace the main switch.
NG →
Replace the handlebar switch (right).
NG →
Replace the neutral switch.
NG →
Replace the sidestand switch.
NG →
Replace the relay unit.
NG →
Properly connect or repair the ignition sys-
tem's wiring.
8-5
IGNITION SYSTEM