Clutch Switch System Malfunction - Yamaha 2009 YZF-R1 (Y) Service Manual

Item/components and
probable cause
5 Shift drum (that detects the
neutral position) malfunction
6 ECU malfunction
C. Clutch switch system malfunction
Item/components and
probable cause
1 Adjusting the clutch lever free
play
2 Connection of clutch switch
coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
3 Connection of main harness
ECU coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
FUEL INJECTION SYSTEM
Check or maintenance job
Check the gear shift drum
(that detects the neutral posi-
tion).
Refer to "CHECKING THE
SHIFT DRUM ASSEMBLY"
on page 5-97.
Malfunction → Replace the
shift drum.
Replace the ECU.
Check or maintenance job
Refer to "ADJUSTING THE
CLUTCH CABLE FREE
PLAY" on page 3-14.
Poor connection → Recon-
nect or repair the coupler.
Poor connection → Connect
it securely, or repair/replace
the wire harness.
8-86
Sensor inspection proce-
dure
Start the engine, and check
the secure connection of the
coupler.
Ride the vehicle at a low
speed (approx. 20–30 km/h).
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Sensor inspection proce-
dure
Start the engine, and check
the secure connection of the
coupler.
Ride the vehicle at a low
speed (approx. 20–30 km/h).
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Start the engine, and check
the secure connection of the
coupler.
Ride the vehicle at a low
speed (approx. 20–30 km/h).
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Start the engine, and check
the secure connection of the
coupler.
Ride the vehicle at a low
speed (approx. 20–30 km/h).
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.