Yamaha YZF-R1 2012, Service Manual

Page: 449 / 556

FUEL INJECTION SYSTEM
8-52
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)
• 85–94 (fully opened position) for FRA/BEL (1KB9/1KBK)
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)
• 82–96 (fully opened position) for FRA/BEL (1KB9/1KBK)
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
1 Connection of throttle posi-
tion sensor coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking). Poor connection
→
Connect
it securely, or repair/replace
the wire harness.
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.
2 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). Poor connection
→
Connect
it securely, or repair/replace
the wire harness.
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.
3 Continuity of wire harness Open or short circuit
→
Replace the wire harness.
Black/Blue–Black/Blue
White–White
Blue–Blue
Black–Black
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.
4 Sensor installation status Check for loose mounting,
pinched mounting, or hard
mounting.
Make sure that the mounting
position is correct.
Refer to “ADJUSTING THE
THROTTLE POSITION SEN-
SOR” on page 7-19. 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.