Lexus NX: Lost Communication with Front Camera Module (U023A)

Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Automatic High Beam System / Lost Communication with Front Camera Module (U023A)

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 Camera Module

The main body ECU (multiplex network body ECU) does not receive data from the forward recognition camera for approximately 10 seconds or more.

  • CAN communication system
  • Forward recognition camera
  • Main body ECU (multiplex network body ECU)

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > Main Body > Clear DTCs

(b) Check for DTCs.

Click here

Body Electrical > Main Body > Trouble Codes

OK:

DTC U023A is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

READ NEXT:

 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

 Components

COMPONENTS ILLUSTRATION *1 AUTOMATIC LIGHT CONTROL SENSOR *2 NO. 1 SPEAKER OPENING COVER ASSEMBLY

SEE MORE:

 Shut Down Signal Circuit

DESCRIPTION The cause of the malfunction may be a shutdown signal. Check whether there is a shutdown signal +B short circuit. Related Parts Check Area Inspection Step HSDN terminal voltage Check that the HSDN terminal voltage decreases while READY OFF (IG ON). If the voltage is low, the

 Unable To Connect To Call Center

DESCRIPTION This may occur when the intensity of telephone radio frequency was very weak or the safety connect system has a malfunction and a DTC is stored. PROCEDURE 1. CHECK COMMUNICATION SERVICE CONDITION (a) Move the vehicle. (1) If the vehicle is outside the communication service area,

© 2016-2025 Copyright www.lexunx.com