Yamaha YZFR1Y(C) 2009 Service Manual page 469

Item/components and
probable cause
5 Shift drum (that detects the
neutral position) malfunction
6 ECU malfunction
Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
1 Connection of relay unit cou-
pler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
2 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).
3 Continuity of wire harness
between the battery, relay
unit, ECU and fuel injectors
coupler
Check or maintenance job
Check the gear shift drum
(that detects the neutral posi-
tion).
Refer to "CHECKING THE
SHIFT DRUM ASSEMBLY"
on page 5-96.
Malfunction → Replace the
shift drum.
Replace the ECU.
43
Incorrect voltage supplied to the fuel injector and fuel pump
Engine startup: Possible
Riding: Possible
D:50
Approximately 12.0
Set the engine stop switch to "
ally measured battery voltage. (If the battery voltage is lower, per-
form recharging.)
Check or maintenance job
Poor connection → Connect
it securely, or repair/replace
the wire harness.
Poor connection → Connect
it securely, or repair/replace
the wire harness.
Open or short circuit →
Replace the wire harness.
Red–Red
Red/Blue–Red/Blue
8-82
FUEL INJECTION SYSTEM
Sensor inspection proce-
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.
", and then compare with the actu-
Sensor inspection proce-
Start and idle the engine for
approximately 30 seconds.
Then, check the fault code
indication.
No fault indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
Start and idle the engine for
approximately 30 seconds.
Then, check the fault code
indication.
No fault indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
Start and idle the engine for
approximately 30 seconds.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
dure
dure