Yamaha YZF-R1 Series Service Manual page 675

• Refer to "CHECKING THE SWITCHES" on page 8-40.
Is check result OK?
YES
→ Go to step 13.
NO
a. Replace the neutral switch.
Refer to "CRANKCASE" on page 5-71.
b. Execute the diagnostic mode. (Code D21)
When the transmission is in neutral
When the transmission is in gear with the clutch lever released
Is it correct indication?
YES
→ Go to step 21.
NO
→ Go to step 13.
13.Faulty shift drum (neutral detection area).
• Check the shift drum.
Refer to "CHECKING THE SHIFT DRUM ASSEMBLY" on page 5-102.
Is check result OK?
YES
→ Go to step 14.
NO
→ Replace the shift drum and go to step 21.
Refer to "TRANSMISSION" on page 5-98.
14.Malfunction in ECU.
• Replace the ECU, and complete the service.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-41.
15.Clutch lever adjustment.
• Refer to "ADJUSTING THE CLUTCH LEVER FREE PLAY" on page 3-12.
• Execute the diagnostic mode. (Code D21)
When the clutch lever is released with the transmission in gear and when the
sidestand is retracted
When the clutch lever is squeezed with the transmission in gear and when the
sidestand is retracted
Is it correct indication?
YES
→ Go to step 21.
NO
→ Go to step 16.
16.Connection of clutch switch coupler.
• Check the locking condition of the coupler.
• Disconnect the coupler and check the pins (bent or broken terminals and locking condition of the
pins).
9-178
P0500 (FI), P1500
ON
OFF
OFF
ON