Yamaha YZF-R1B 2012 Service Manual page 463

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
3 Lean angle sensor malfunc-
tion
4 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 ignition coil
coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
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30
Turnover of vehicle
Engine startup: Impossible
Riding: Impossible
D:08
Lean angle sensor
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Remove the lean angle sensor and incline it more than 45 degrees.
Check or maintenance job
Diagnostic mode (Code No.
08).
Sensor inspection procedure
Refer to "CHECKING THE
LEAN ANGLE SENSOR" on
page 8-138.
In vertical position: 0.4–1.4 V
When turned over:
3.7–4.4 V
Indication is incorrect. →
Replace the lean angle sen-
sor.
Replace the ECU.
33
Ignition coil #1 primary lead malfunction
Engine startup: Possible (depending on the number of failed cylin-
ders)
Riding: Possible (depending on the number of failed cylinders)
D:30
Actuates the cylinder-#1 ignition coil five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Check the spark five times.
• Connect an ignition checker.
Check or maintenance job
Poor connection → Connect
it securely or replace the wire
harness.
8-66
FUEL INJECTION SYSTEM
Sensor inspection proce-
Place the main switch to the
ON position.
(however, the engine cannot
be restarted unless the main
switch is first turned OFF)
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Sensor inspection proce-
Start and idle the engine for
approximately 5 seconds.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
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