Yamaha YZF-R1B 2012 Service Manual page 473

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:36
Checking
method
Actuator oper-
ation
D:37
Checking
method
Actuator oper-
ation
D:38
Checking
method
Actuator oper-
ation
D:39
Checking
method
Item/components and
probable cause
4 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).
5 Connection of primary injec-
tor 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
39
Open or short circuit of primary injector lead
Engine startup: Possible (depending on the number of failed cylin-
ders)
Riding: Possible (depending on the number of failed cylinders)
D:36
D:37
D:38
D:39
Actuates the primary injector #1 five times at one-second intervals.
Illuminates the engine trouble warning light.
Check the operating sound of the primary injector #1 five times.
Actuates the primary injector #2 five times at one-second intervals.
Illuminates the engine trouble warning light.
Check the operating sound of the primary injector #2 five times.
Actuates the primary injector #3 five times at one-second intervals.
Illuminates the engine trouble warning light.
Check the operating sound of the primary injector #3 five times.
Actuates the primary injector #4 five times at one-second intervals.
Illuminates the engine trouble warning light.
Check the operating sound of the primary injector #4 five times.
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.
8-76
FUEL INJECTION SYSTEM
Sensor inspection proce-
Start the engine and let it idle
for approximately 5 seconds,
and check the fault code indi-
cation.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Start the engine and let it idle
for approximately 5 seconds,
and check the fault code indi-
cation.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
dure