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 > Intuitive Parking Assist System(for Gasoline Model): Rear Right Sensor Malfunction (C1AE9)
DESCRIPTION The rear corner ultrasonic sensor RH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear corner ultrasonic sensor RH. If the rear corner ultrasonic sensor RH has an open circuit or other malfunction, it will not fu ...