P0116; Troubleshooting - Yamaha MT-09 2021 Service Manual

EAS20423

P0116

EAS32842

TROUBLESHOOTING

Item
Coolant temperature sensor: signal out of range
Fail-safe system
• Able to start engine
• Able to drive vehicle
Procedure
TIP
• Perform this procedure when the engine is cold.
• If more than one DTC is detected at the same time, perform troubleshooting of DTC listed below first.
• P0117, P0118
1. Connection of coolant temperature 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. Execute the diagnostic mode. (Code 06)
• When engine is cold: Displayed temperature is close to the ambient temperature.
Is check result OK?
YES
→ Go to step 7, and complete the service.
NO
→ Go to step 2.
2. Connection of 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. Execute the diagnostic mode. (Code 06)
• When engine is cold: Displayed temperature is close to the ambient temperature.
Is check result OK?
YES
→ Go to step 7, and complete the service.
NO
→ Go to step 3.
9-118
P0116