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Home >> Lexus >> 2022 >> ES 250 Base >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (Ext) (Except Hybrid) - Diagnostic Codes (2 Of 2) & Symptom Tests >> LIGHTING SYSTEM (for Gasoline Model) >> DTC U1000: CAN Communication Failure (Message Registry) [06/2018 - ] >> Description

DTC U1000: CAN Communication Failure (Message Registry) [06/2018 - ]: Description

The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores this DTC if it detects an internal malfunction related to the CAN communication system.

FOR LED TYPE TURN SIGNAL LIGHT

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U1000 CAN Communication Failure (Message Registry) Detection condition: 
  1. The engine switch is on (IG).

Malfunction status: 
  1. CAN communication failure

Malfunction duration: 
  1. -
 Headlight ECU sub-assembly LH AFS
FOR LED TYPE TURN SIGNAL LIGHT

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U1000 CAN Communication Failure (Message Registry) Detection condition: 
  1. The engine switch is on (IG).

Malfunction status: 
  1. CAN communication failure

Malfunction duration: 
  1. -
 Headlight ECU sub-assembly RH AFS (Sub)
FOR BULB TYPE TURN SIGNAL LIGHT

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U1000 CAN Communication Failure (Message Registry) Detection condition: 
  1. The engine switch is on (IG).

Malfunction status: 
  1. CAN communication failure

Malfunction duration: 
  1. -
 Headlight ECU sub-assembly LH HL AutoLeveling
FOR BULB TYPE TURN SIGNAL LIGHT

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U1000 CAN Communication Failure (Message Registry) Detection condition: 
  1. The engine switch is on (IG).

Malfunction status: 
  1. CAN communication failure

Malfunction duration: 
  1. -
 Headlight ECU sub-assembly RH HL AutoLeveling (Sub)
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