Yamaha TMAX 2020 Service Manual

9-19553_ABSEAS2069953_ABSEAS33327TROUBLESHOOTINGItemVehicle system power supply (voltage of ABS ECU power supply is low)Procedure1. Defective battery• Recharge or replace the battery, and check again.Refer to “CHECKING AND CHARGING THE BATTERY” on page 8-94.2. Defective coupler between the battery and the hydraulic unit assembly• Check the coupler for any pins that may be pulled out.• Check the locking condition of the coupler.TIPPush the OFF/LOCK switch before disconnecting or connecting a coupler.3. Wire harness continuity• Disconnect the ABS ECU fuse and ABS ECU coupler.• Open circuit check• Short circuit checkTIPDisconnect the ABS ECU related connectors before checking.Refer to “PARTS CONNECTED TO THE ABS ECU” on page 9-4.Ground short circuit check “A”Is check result OK?YES Go to step 3.NO If there is a malfunction, repair it and connect the coupler securely.Between ABS ECU fuse holder “1” and ABSECU coupler “2” brown/whiteIs resistance 0 ?YES Go to “Short circuit check”.NO Replace the wire harness.Between ABS ECU coupler “2” and ground brown/white–groundBW/GG/RW/YWBBWR/WB/GB/LLg/WLg/LBr/WLgLgG/YR/L1 2