Yamaha YZFR1Y(C) 2009 Service Manual page 393

7. Check the cylinder identification
sensor.
Refer to "CHECKING THE CYLIN-
DER IDENTIFICATION SENSOR"
on page 8-125.
OK↓
8. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-105.
OK↓
9. Check the engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-105.
OK↓
10.Check the gear position sensor.
Refer to "CHECKING THE GEAR
POSITION SENSOR" on page 8-
127.
OK↓
11.Check the sidestand switch.
Refer to "CHECKING THE
SWITCHES" on page 8-105.
OK↓
12.Check the relay unit (diode).
Refer to "CHECKING THE RELAY
UNIT (DIODE)" on page 8-115
OK↓
13.Check the lean angle sensor.
Refer to "CHECKING THE LEAN
ANGLE SENSOR" on page 8-117.
OK↓
14.Check the entire ignition system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-1.
OK↓
Replace the ECU.
NG→
Replace the cylinder identification
sensor.
NG→
Replace the main switch.
NG→
Replace the right handlebar switch.
NG→
Replace the gear position sensor.
NG→
Replace the sidestand switch.
NG→
Replace the relay unit.
NG→
Replace the lean angle sensor.
NG→
Properly connect or repair the ignition
system's wiring
8-6
IGNITION SYSTEM