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Home >> Lexus >> 2016 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Meter / Gauge / Display System (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0151: Lost Communication with Restraints Control Module; DTC U023A: Lost Communication with Front Camera Module [08/2019 - ] >> Description
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0151: Lost Communication with Restraints Control Module; DTC U023A: Lost Communication with Front Camera Module [08/2019 - ]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area
U0100 Lost Communication with ECM / PCM "A" Diagnosis Condition: 
  • The engine switch is on (IG)
  • IG power source voltage is 9.5 V or more

Diagnosis Condition: 
  1. No communication with ECM

Malfunction Time: 
  1. 2 seconds or more
  • ECM
  • CAN communication system
  • Combination meter assembly
U0129 Lost Communication with Brake System Control Module Diagnosis Condition: 
  • The engine switch is on (IG)
  • IG power source voltage is 9.5 V or more

Diagnosis Condition: 
  1. No communication with master cylinder solenoid (skid control ECU)

Malfunction Time: 
  1. 2 seconds or more
  • Master cylinder solenoid (skid control ECU)
  • CAN communication system
  • Combination meter assembly
U0140 Lost Communication with Body Control Module Diagnosis Condition: 
  • The engine switch is on (IG)
  • IG power source voltage is 9.5 V or more

Diagnosis Condition: 
  1. No communication with main body ECU (multiplex network body ECU)

Malfunction Time: 
  1. 3 seconds or more
  • Main body ECU (multiplex network body ECU)
  • CAN communication system
  • Combination meter assembly
U0151 Lost Communication with Restraints Control Module Diagnosis Condition: 
  • The engine switch is on (IG)
  • IG power source voltage is 9.5 V or more

Diagnosis Condition: 
  1. No communication with airbag sensor assembly

Malfunction Time: 
  1. 10 seconds or more
  • Airbag sensor assembly
  • CAN communication system
  • Combination meter assembly
U023A Lost Communication with Front Camera Module Diagnosis Condition: 
  • The engine switch is on (IG)
  • IG power source voltage is 9.5 V or more

Diagnosis Condition: 
  1. No communication with forward recognition camera

Malfunction Time: 
  1. 10 seconds or more
  • Forward recognition camera
  • CAN communication system
  • Combination meter assembly