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Home >> Toyota >> 2018 >> Avalon XLE >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (W/O Central Gateway Ecu) - Diagnostic Codes & Circuit Tests - (Except Hybrid) >> CAN COMMUNICATION SYSTEM (W/O Central Gateway ECU) >> DTC U0104: Lost Communication with Driving Support ECU [10/2014 - 10/2015] >> Description

DTC U0104: Lost Communication with Driving Support ECU [10/2014 - 10/2015]: Description

DTC No. DTC Detection Condition Trouble Area
U0104 No communication from the driving support ECU assembly continues.
  • Driving support ECU assembly branch line or connector
  • Power source circuit of driving support ECU assembly
  • Driving support ECU assembly ground circuit
  • Driving support ECU assembly

HINT: 

This diagnosis procedure is for when DTC U0104 is output by the network gateway ECU (Techstream display: Gateway).