P0335; Troubleshooting - Yamaha MT-09 2021 Service Manual

EAS20578

P0335

EAS33058

TROUBLESHOOTING

Item
Crankshaft position sensor: no normal signals are received from the crankshaft position sensor.
Fail-safe system
• Unable to start engine
• Unable to drive vehicle
Procedure
1. Connection of crankshaft position sensor 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).
Is the coupler condition normal?
YES
→ Go to step 2.
NO
a. Connect the coupler securely or replace the wire harness.
b. Crank the engine, 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 7, and complete the service.
NO
→ Go to step 2.
2. Connection of wire harness ECU 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).
Is the coupler condition normal?
YES
→ Go to step 3.
NO
a. Connect the coupler securely or replace the wire harness.
b. Crank the engine, 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 7, and complete the service.
NO
→ Go to step 3.
3. Wire harness continuity.
• Disconnect the crankshaft position sensor coupler "1" and ECU coupler "3".
• Remove the joint coupler cap "2".
• Open circuit check
9-151
P0335