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Home >> Lexus >> 2020 >> UX 250h Base >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> HEADUP Display System (Diagnostic Codes & Circuit Tests) >> HEADUP Display System >> DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U012987: Lost Communication With Brake System Control Module Missing Message; DTC U014087: Lost Communication with Body Control Module Missing Message; DTC U015587: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U016387: Lost Communication with Navigation Control Module Missing Message; DTC U016487: Lost Communication with HVAC Control Module Missing Message; DTC U023A87: Lost Communication with Image Processing Module "A" Missing Message; DTC U029387: Lost Communication With Hybrid Powertrain Control Module Missing Message; DTC U111087: Lost Communication with Intuitive Parking Assist Module Missing Message [07/2022 - ] >> Description
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DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U012987: Lost Communication With Brake System Control Module Missing Message; DTC U014087: Lost Communication with Body Control Module Missing Message; DTC U015587: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U016387: Lost Communication with Navigation Control Module Missing Message; DTC U016487: Lost Communication with HVAC Control Module Missing Message; DTC U023A87: Lost Communication with Image Processing Module "A" Missing Message; DTC U029387: Lost Communication With Hybrid Powertrain Control Module Missing Message; DTC U111087: Lost Communication with Intuitive Parking Assist Module Missing Message [07/2022 - ]: Description

The meter mirror sub-assembly communicates with each ECU via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
U010087 Lost Communication With ECM/PCM "A" Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  • No communication with ECM

Malfunction Time:
  1. 3.6 seconds or more
  • ECM
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U012987 Lost Communication With Brake System Control Module Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  • No communication with skid control ECU (brake booster with master cylinder assembly)*1
  • No communication with skid control ECU (brake actuator assembly)*2

Malfunction Time:
  1. 3.6 seconds or more
  • Skid control ECU (brake booster with master cylinder assembly)
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U014087 Lost Communication with Body Control Module Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  1. No communication with main body ECU (multiplex network body ECU)

Malfunction Time:
  1. 5.0 seconds or more
  • Main body ECU (Multiplex network body ECU)
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U015587 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  1. No communication with combination meter assembly

Malfunction Time:
  1. 5.0 seconds or more
  • Combination meter assembly
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U016387 Lost Communication with Navigation Control Module Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  1. No communication with radio receiver assembly

Malfunction Time:
  1. 5.0 seconds or more
  • Radio receiver assembly
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U016487 Lost Communication with HVAC Control Module Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  1. No communication with air conditioning amplifier assembly

Malfunction Time:
  1. 5.0 seconds or more
  • Air conditioning amplifier assembly
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U023A87 Lost Communication with Image Processing Module "A" Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  1. No communication with forward recognition camera

Malfunction Time:
  1. 5.0 seconds or more
  • Forward recognition camera
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U029387 Lost Communication With Hybrid Powertrain Control Module Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  1. No communication with hybrid vehicle control ECU assembly

Malfunction Time:
  1. 3.6 seconds or more
  • Hybrid vehicle control ECU assembly
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
U111087 Lost Communication with Intuitive Parking Assist Module Missing Message Diagnosis Condition:
  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:
  1. No communication with clearance warning ECU assembly

Malfunction Time:
  1. 5.0 seconds or more
  • Clearance warning ECU assembly
  • CAN communication system
  • Meter mirror sub-assembly
 DTC stored
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