Yamaha YZF-R1 Series Service Manual page 684

EAS20677
P0606
EAS33306
TROUBLESHOOTING
Item
Internal malfunction in ECU. (When this malfunction is detected in the ECU, the DTC might not appear
on the tool display.)
Fail-safe system
• Able/Unable to start engine
• Able/Unable to drive vehicle
Procedure
1. Check and repair for simultaneous malfunction.
• Check the items of DTCs P0122, P0123, P0222, P0223 and P2135, if they are detected at the same
time, correct the P0122, P0123, P0222, P0223 and P2135 first.
• Turn the main switch to "ON", and then check the condition of the DTC using the malfunction mode
of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 3, and complete the service.
NO
→ Go to step 2.
2. Malfunction in ECU.
• Replace the ECU.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-41.
• Turn the main switch to "ON".
• Check that the MIL does not come on.
3. Delete the DTC and check that the MIL goes off.
• Confirm that the DTC has a condition of "Recovered" using the YDT, and then delete the DTC.
9-187
P0606