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Home >> Lexus >> 2016 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting System (Exterior) (Diagnostic Codes & Circuit Tests) >> Lighting System >> DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0120: Lost Communication With Starter / Generator Control Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U0182: Lost Communication with AFS; DTC U023A: Lost Communication With Image Processing Module "A"; DTC U0327: Software Incompatibility with Vehicle Security Control Module; DTC U1117: Lost Communication with Accessory Gateway [08/2019 - ] >> Description
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DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0120: Lost Communication With Starter / Generator Control Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U0182: Lost Communication with AFS; DTC U023A: Lost Communication With Image Processing Module "A"; DTC U0327: Software Incompatibility with Vehicle Security Control Module; DTC U1117: Lost Communication with Accessory Gateway [08/2019 - ]: Description

These DTCs are stored if a CAN communication malfunction occurs between the main body ECU (multiplex network body ECU) and other ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
U0100 Lost Communication With ECM/PCM "A" The main body ECU (multiplex network body ECU) does not receive data from the ECM for approximately 10 seconds or more.
  • CAN communication system
  • ECM
  • Main body ECU (multiplex network body ECU)
 -
U0101 Lost Communication with TCM The main body ECU (multiplex network body ECU) does not receive data from the ECM for approximately 10 seconds or more.
  • CAN communication system
  • ECM
  • Main body ECU (multiplex network body ECU)
 -
U0120 Lost Communication With Starter / Generator Control Module The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for approximately 10 seconds or more.
  • CAN communication system
  • Certification ECU (smart key ECU assembly)
  • Main body ECU (multiplex network body ECU)
 -
U0129 Lost Communication with Brake System Control Module The main body ECU (multiplex network body ECU) does not receive data from the master cylinder solenoid (skid control ECU) for approximately 10 seconds or more.
  • CAN communication system
  • Master cylinder solenoid (skid control ECU)
  • Main body ECU (multiplex network body ECU)
 -
U0151 Lost Communication with Restraints Control Module The main body ECU (multiplex network body ECU) does not receive data from the airbag sensor assembly for approximately 10 seconds or more.
  • CAN communication system
  • Airbag sensor assembly
  • Main body ECU (multiplex network body ECU)
 -
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module The main body ECU (multiplex network body ECU) does not receive data from the combination meter assembly for approximately 10 seconds or more.
  • CAN communication system
  • Combination meter assembly
  • Main body ECU (multiplex network body ECU)
 -
U0182 Lost Communication with AFS The main body ECU (multiplex network body ECU) does not receive data from the No. 1 headlight ECU sub-assembly LH for approximately 10 seconds or more.
  • CAN communication system
  • No. 1 headlight ECU sub-assembly LH
  • Main body ECU (multiplex network body ECU)
 -
U023A Lost Communication With Image Processing Module "A" The main body ECU (multiplex network body ECU) does not receive data from the forward recognition camera for approximately 5 seconds or more.
  • CAN communication system
  • Forward recognition camera
  • Main body ECU (multiplex network body ECU)
 -
U0327 Software Incompatibility with Vehicle Security Control Module The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for approximately 10 seconds or more.
  • CAN communication system
  • Certification ECU (smart key ECU assembly)
  • Main body ECU (multiplex network body ECU)
 -
U1117 Lost Communication with Accessory Gateway The main body ECU (multiplex network body ECU) does not receive data from the option connector (bus buffer ECU) for approximately 10 seconds or more.
  • CAN communication system
  • Option connector (bus buffer ECU)
  • Main body ECU (multiplex network body ECU)
 w/ Bus Buffer ECU
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