Yamaha YZF-R1B 2012 Service Manual page 485

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
Item/components and
probable cause
4 Continuity of wire harness
5 Clutch switch malfunction
6 Malfunction of the ECU or
speedometer.
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).
email: info@motomatrix.co.uk
Check or maintenance job
Open short circuit → Replace
the wire harness.
Black/Yellow–Black/Yellow
Blue/Yellow–Blue/Yellow
Check the clutch switch.
Refer to "CHECKING THE
SWITCHES" on page 8-125.
Replacement of the ECU or
speedometer.
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.
8-88
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.
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.
dure
dure