P0105; Troubleshooting - Yamaha MT-09 2021 Service Manual

EAS20420

P0105

EAS32838

TROUBLESHOOTING

Item
Intake air pressure sensor: signal out of range
Fail-safe system
• Able to start engine
• Able to drive vehicle
Procedure
TIP
If more than one DTC is detected at the same time, perform troubleshooting of DTC listed below first.
• P0107, P0108
1. Connection of intake air pressure 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. 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 5, and complete the service.
NO
→ Go to step 2.
2. Defective intake air pressure sensor.
• Replace the intake air pressure sensor.
Refer to "THROTTLE BODIES" on page 7-5.
• 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 5, and complete the service.
NO
→ Go to step 3.
3. Defective wire harness.
• Replace the wire harness.
• Turn the main switch to "ON", and then check the condition of the DTC using the malfunction mode
of the YDT.
9-100
P0105