DESCRIPTION The rear corner ultrasonic sensor LH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear corner ultrasonic sensor LH. If the rear corner ultrasonic sensor LH has an open circuit or other malfunction, it will not function normally.
CAUTION / NOTICE / HINT NOTICE: If DTCs are output after repairs, turn the engine switch on (IG) and the intuitive parking assist system on. Then clear the DTCs. Click here
PROCEDURE
(a) Check for DTCs. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
(a) Replace the rear corner ultrasonic sensor LH with a known good one. Click here HINT: All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.
(a) Clear the DTCs. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs(b) Check for DTCs. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Automatic Transaxle System: Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) When troubleshooting On-Board Diagnostic (OBD II) vehicles, an OBD II scan tool (complying with SAE J1987) must be connected to the vehicle. Various data output from the vehicle ECM can then be read. (b) OBD II regulations require that the vehicle on-board computer i ...
