Lexus NX: General

 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. DTC No. Detection Item DTC Detection Condition Trouble Area B124B Automatic High Beam

 Inspection

INSPECTION PROCEDURE 1. INSPECT CLEARANCE LIGHT ASSEMBLY LH (a) Apply battery voltage to the connector and check the light illumination condition. OK: Condition Specified Condition Battery positive (+) → 3 (DRL) Battery negative (-) → 2 (E) LED illuminates Battery positive (+)