DESCRIPTION This circuit consists of the No. 1 clearance warning buzzer and clearance warning ECU assembly. An ECU-excited type buzzer is used. The ECU operates the buzzers using a sound pattern that changes depending on the distance to the obstacle. WIRING DIAGRAM  PROCEDURE
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Active Test. (e) Check that the front buzzer operates by performing the Active Test. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test
OK: The No. 1 clearance warning buzzer sounds.
(a) Disconnect the K34 clearance warning ECU assembly connector. (b) Disconnect the G51 No. 1 clearance warning buzzer connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Replace the No. 1 clearance warning buzzer with a new or known good one. Click here
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Active Test. (e) Check that the front buzzer operates by performing the Active Test. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test
OK: The No. 1 clearance warning buzzer sounds.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Panoramic View Monitor System(for Hv Model): Open or Short Circuit in Back Camera Signal (C1622)
DESCRIPTION DTC C1622 is stored if the parking assist ECU judges as a result of its self check that the signals or signal lines between the parking assist ECU and the television camera assembly are not normal. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from C1622 Open or ...
