Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Automatic High Beam System (B124B)

DESCRIPTION

The main body ECU (multiplex network body ECU) determines the status of the automatic high beam system based on the automatic high beam system signal from the forward recognition camera.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

• The lighting system (for HV Model with Cornering Light) uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the automatic high beam system after confirming that the communication systems are functioning properly.

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• Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

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HINT:

• Speed sensor
• Yaw rate sensor
• CAN communication system

PROCEDURE

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: System Select / Health Check.

(e) Check for DTCs.

B

GO TO OTHER DTC CHART

A

(a) Check if a dynamic radar cruise control system, lane departure alert system or pre-collision system warning message is displayed on the multi-information display.

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OK:

No dynamic radar cruise control system, lane departure alert system and pre-collision system warning messages are displayed.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

GO TO FRONT CAMERA SYSTEM