Yamaha 2009 YZF-R1 (Y) Service Manual page 486

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
D:14
Checking
method
Meter display
D:15
Checking
method
Item/components and
probable cause
6 Accelerator position sensor
malfunction
7 ECU malfunction
59
Open or short circuit of accelerator position sensor lead
Engine startup: Possible under certain conditions
Riding: Possible under certain conditions
D:14
D:15
Accelerator position sensor signal 1
• 12–22 (fully closed position)
• 97–107 (fully opened position)
• Check with throttle grip fully closed.
• Check with throttle grip fully open.
Accelerator position sensor signal 2
• 10–24 (fully closed position)
• 95–109 (fully opened position)
• Check with throttle grip fully closed.
• Check with throttle grip fully open.
Check or maintenance job
Check the accelerator posi-
tion sensor signal 1 diagnos-
tic mode (Code No. 14).
When throttle is fully closed:
A value of 12–22 is indicated.
When throttle is fully opened:
A value of 97–107 is indi-
cated.
Check the accelerator posi-
tion sensor signal 2 diagnos-
tic mode (Code No. 15).
When throttle is fully closed:
A value of 10–24 is indicated.
When throttle is fully opened:
A value of 95–109 is indi-
cated.
If the indication is outside of
range: Replace the accelera-
tor position sensor.
Replace the ECU.
FUEL INJECTION SYSTEM
8-95
Sensor inspection proce-
dure
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.