Yamaha TMAX 2020 Service Manual page 551

EAS20567
P0107, P0108
EAS33047
TROUBLESHOOTING
Item
• [P0107] Intake air pressure sensor: ground short circuit detected.
• [P0108] Intake air pressure sensor: open or power short circuit detected.
Fail-safe system
• Able to start engine
• Able to drive vehicle
Procedure
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. Push the ON/start switch, 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 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. Push the ON/start switch, 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 intake air pressure sensor coupler and ECU coupler.
• Open circuit check
9-77
P0107, P0108