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Home >> Toyota >> 2021 >> Avalon Touring >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Lane Departure Alert System - Diagnostic Codes & Circuit Tests (Except Hybrid) >> LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) (for Gasoline Model) >> DTC C1A73: Driving Support ECU Receive Data Malfunction [04/2018 - 08/2021] >> Description

DTC C1A73: Driving Support ECU Receive Data Malfunction [04/2018 - 08/2021]: Description

If a communication error between the driving support ECU assembly and another ECU is detected, DTC C1A73 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A73 Driving Support ECU Receive Data Malfunction 2 seconds after the engine switch is turned on (IG), a communication error between the driving support ECU assembly and other ECUs is detected 5 seconds or more.
  • CAN communication system
  • Forward recognition camera
  • Pre-collision system
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