DESCRIPTION If a communication error between the driving support ECU assembly and another ECU is detected, DTC C1A73 is stored.
CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
HINT: The driving support ECU communicates with other ECUs via CAN communication. Confirm that the CAN communication system is functioning normally before proceeding. (a) Check for DTCs. Body Electrical > Pre-Collision 2 > Trouble Codes
(a) Clear the DTCs. Chassis > LKA/LDA > Clear DTCs(b) Make sure that the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction. (c) Check for DTCs. Chassis > LKA/LDA > Trouble Codes
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Lane Departure Alert System (w/ Steering Control)(for Gasoline Model): Power Steering Control Torque (C1A71)
DESCRIPTION If the power steering ECU (rack and pinion power steering gear assembly) detects an abnormality in the steering torque requested by the forward recognition camera, the power steering ECU (rack and pinion power steering gear assembly) sends a malfunction signal to the forward recognition ...