Yamaha YZF-R1B 2012 Service Manual page 477

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.
Actuator oper-
ation
D:40
Checking
method
Actuator oper-
ation
D:41
Checking
method
Actuator oper-
ation
D:42
Checking
method
Actuator oper-
ation
D:43
Checking
method
Item/components and
probable cause
5 Connection of secondary
injector sub-wire harness
coupler
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
40
Open or short circuit of secondary injector lead
Engine startup: Possible (depending on the number of failed cylin-
ders)
Riding: Possible (depending on the number of failed cylinders)
D:40
D:41
D:42
D:43
Actuates the secondary injector #1 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Check the operating sound of the secondary injector #1 five times.
Actuates the secondary injector #2 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Check the operating sound of the secondary injector #2 five times.
Actuates the secondary injector #3 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Check the operating sound of the secondary injector #3 five times.
Actuates the secondary injector #4 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Check the operating sound of the secondary injector #4 five times.
Check or maintenance job
Poor connection → Connect
it securely, or repair/replace
the wire harness.
8-80
FUEL INJECTION SYSTEM
Sensor inspection proce-
Check the injector's operating
noise by the diagnostic mode
(Code No.40–43).
Injector's operating noise →
Reset with the diagnostic
code 63. Recovered.
No injector's operating noise
→ Check the next step.
dure