Yamaha YZFR1Y(C) 2009, Service Manual

Page: 438 / 526

FUEL INJECTION SYSTEM
8-51
5 Supply voltage of throttle
position sensor lead Check the supply voltage.
Throttle position sensor sig-
nal 1
Black/Blue–White
Throttle position sensor sig-
nal 2
Black/Blue–Black
Refer to “CHECKING THE
THROTTLE POSITION SEN-
SOR” on page 8-122. Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
Line discon-
nection points Output volt-
age
Disconnec-
tion of ground
lead 5 V
Disconnec-
tion of output
line 0 V
Disconnec-
tion of power
supply line 0 V
Fault code No. 15
Symptom Open or short circuit of throttle position sensor lead
Fail-safe action
Engine startup: Possible under certain conditions
Riding: Possible under certain conditions
Diagnostic monitor-
ing code No. D:01
D:13
D:01
Meter display
Throttle position sensor signal 1
• 12–21 (fully closed position)
• 97–106 (fully opened position)
Checking
method • Check with throttle valve fully closed.
• Check with throttle valve fully opened.
D:13
Meter display
Throttle position sensor signal 2
• 9–23 (fully closed position)
• 94–108 (fully opened position)
Checking
method • Check with throttle valve fully closed.
• Check with throttle valve fully opened.
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure