Yamaha TMAX 2020 Service Manual

9-140P0638EAS20599P0638EAS33079TROUBLESHOOTINGItemYCC-T drive system: malfunction detected.Fail-safe system• Able/Unable to start engine• Able/Unable to drive vehicleProcedure1. Connection of throttle servo motor coupler.• Check the locking condition of the coupler.• Disconnect the coupler and check the pins (bent or broken terminals and locking condition of thepins).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 thepins).Is the coupler condition normal?YES Go to step 2.NOa. 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 modeof the YDT.Is it in the “Recovered” condition?YES Go to step 8, and complete the service.NO Go to step 2.Is the coupler condition normal?YES Go to step 3.NOa. 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 modeof the YDT.Is it in the “Recovered” condition?YES Go to step 8, and complete the service.NO Go to step 3.