Lexus NX: Automatic High Beam Camera (B124C)

DESCRIPTION

The main body ECU (multiplex network body ECU) detects a high beam headlight illumination request signal of the automatic high beam system from the forward recognition camera.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B124C

Automatic High Beam Camera

Malfunction in forward recognition camera

Front camera system

WIRING DIAGRAM

PROCEDURE

1.

CHECK FRONT CAMERA SYSTEM

(a) Check the front camera system.

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DESCRIPTION These DTCs are stored when the CAN communication system is malfunctioning. DTC No. Detection Item DTC Detection Condition Trouble Area U023A Lost Communication with Front Ca

 Automatic High Beam System does not Operate or Operation Indicator does not Illuminate

DESCRIPTION The main body ECU (multiplex network body ECU) controls the automatic high beam system based on signals received from the forward recognition camera. WIRING DIAGRAM CAUTION / NOTICE / HIN

 Automatic Light Control Sensor

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 Vehicle Control History

VEHICLE CONTROL HISTORY NOTICE: When checking the Vehicle Control History, make sure to record the output codes. Then, clear the Vehicle Control History (RoB) and check it again. CHECK VEHICLE CONTROL HISTORY (FRONT RADAR SENSOR SYSTEM) (a) Connect the Techstream to the DLC3. (b) Turn the power swit

 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) Automatic high beam system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and to repair it. CHECK DLC3 (a) Check the D

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