Yamaha TMAX 2020 Service Manual

9-152P1602EAS20615P1602EAS33095TROUBLESHOOTINGItemMalfunction in ECU internal circuit (malfunction of ECU power cut-off function).Fail-safe system• Able/Unable to start engine• Able/Unable to drive vehicleProcedure1. Installed condition of battery leads.• Check the installed condition of the battery and battery leads (loose bolts).2. Connection of starter relay 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 check result OK?YES Go to step 2.NOa. Reinstall or replace the battery leads.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 6, 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 6, and complete the service.NO Go to step 3.