Yamaha YZF-R1(B) 2012 Service Manual page 474

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
6 Continuity of wire harness
7 ECU malfunction
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
Open or short circuit →
Replace the wire harness.
Primary injector #1
Red/Blue–Red/Blue
Red/Black–Red/Black
Primary injector #2
Red/Blue–Red/Blue
Green/Black–Green/Black
Primary injector #3
Red/Blue–Red/Blue
Blue/Black–Blue/Black
Primary injector #4
Red/Blue–Red/Blue
Orange/Black–Orange/Black
Replace the ECU.
FUEL INJECTION SYSTEM
8-77
Sensor inspection proce-
dure
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.