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Auto High Beam System (Diagnostic Codes & Circuit Tests): Overview Lexus IS III

Exterior Lights 2 illustrations ~113 words

DESCRIPTION

This DTC is stored when the CAN communication system is malfunctioning.

DTC No.Detection ItemDTC Detection ConditionTrouble Area
U023ALost Communication with Front Camera ModuleLost communication with lane departure warning camera (Detected for 5 seconds or more)CAN communication system

This DTC is stored when the main body ECU (multiplex network body ECU) detects a malfunction in the lane departure warning camera.

DTC No.Detection ItemDTC Detection ConditionTrouble Area
B124CAutomatic High Beam CameraMalfunction in lane departure warning camera (automatic high beam camera) (Detected for 2 seconds or more)Lane departure warning camera Main body ECU (multiplex network body ECU)

Scheme 129

Scheme 129: WIRING DIAGRAM

When DTCs for the following systems are stored, this DTC is stored simultaneously.

  1. Lane departure alert system
  2. CAN communication system
DTC No.Detection ItemDTC Detection ConditionTrouble Area
B124BAutomatic High Beam SystemMalfunction in automatic high beam system (Detected for 2 seconds or more)Lane departure alert system CAN communication system Lane departure warning camera Main body ECU (multiplex network body ECU)

The main body ECU (multiplex network body ECU) detects auto high beam switch signals.

The automatic high beam system can be turned on and off by operating the auto high beam switch.

Scheme 130

Scheme 130: WIRING DIAGRAM