Yamaha TMAX 2020 Service Manual

8-74SMART KEY SYSTEMSeat/fuel lid does not open. (Vehicle power is turned on.)TIPIf the smart key system indicator light “ ” comes on for 0.3 second, goes off for 1.0 second, and thispattern continues for 20 seconds (error) when the seat/fuel lid is opened, the seat/fuel lid cannot beopened unless the vehicle power is turned off and then on.5. The smart key system indicatorlight “ ” flashes.(The indicator light repeatedlyflashes 3 times, and then goes offafter approximately 20 seconds.)Refer to “SMART KEY SYSTEMSELF-DIAGNOSIS” on page 8-78.YES Steering lock unit data error or malfunction Replace the steering lock unit.NO• The smart key system indicator light“ ” does not flash.• There are sources of strong electro-magnetic waves in the vicinity Move the vehicle.• Smart key malfunction  Registerand use a different smart key.• Remote control unit malfunction Replace the remote control unit.Engine does not start even though vehicle power is turned on.1. When the vehicle power is turnedon, the smart key system indicatorlight “ ” flashes.Refer to “SMART KEY SYSTEMSELF-DIAGNOSIS” on page 8-78.NOCheck and repair the electric starting sys-tem.Refer to “ELECTRIC STARTING SYS-TEM” on page 8-7.YES2. Check for continuity in the commu-nication line between the ECU andthe remote control unit(Yellow/Blue).NG Replace the wire harness.OK• Check the engine.Refer to “FUEL INJECTION SYS-TEM”.• Replace the ECU.• Replace the remote control unit.1. Check the vehicle power.Refer to “Checking the vehiclepower”.NG Repair or replace any defective parts.OK