Yamaha YZF-R1B 2012 Service Manual page 467

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
6 Ignition coil malfunction
(Check the resistance of igni-
tion coil #2.)
7 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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34
Ignition coil #2 primary lead malfunction
Engine startup: Possible (depending on the number of failed cylin-
ders)
Riding: Possible (depending on the number of failed cylinders)
D:31
Actuates the cylinder-#2 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
Refer to "CHECKING THE
IGNITION COILS" on page 8-
136.
Ignition coil inspection
method
Check in the diagnostic mode
(Code No. 31).
If not ignited, replace the
defective ECU.
35
Ignition coil #3 primary lead malfunction
Engine startup: Possible (depending on the number of failed cylin-
ders)
Riding: Possible (depending on the number of failed cylinders)
D:32
Actuates the cylinder-#3 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.
8-70
FUEL INJECTION SYSTEM
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.
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.
dure
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