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Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Ext) - Diagnostic Codes & Circuit Tests >> Lighting System >> DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [11/2018 - ] >> Description
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DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [11/2018 - ]: Description

These DTCs are stored if a CAN communication malfunction occurs between the forward recognition camera and other ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message The forward recognition camera does not receive data from the airbag ECU assembly for approximately 5 seconds or more.
  • CAN communication system
  • Airbag ECU assembly
  • Forward recognition camera
U0129-87 Lost Communication with Brake System Control Module Missing Message The forward recognition camera does not receive data from the skid control ECU (brake booster with master cylinder assembly) for approximately 5 seconds or more.
  • CAN communication system
  • Brake booster with master cylinder assembly (skid control ECU)
  • Forward recognition camera
U0140-87 Lost Communication with Body Control Module Missing Message The forward recognition camera does not receive data from the main body ECU (multiplex network body ECU) for approximately 5 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Forward recognition camera
U0293-87 Lost Communication with Hybrid Powertrain Control Module Missing Message The forward recognition camera does not receive data from the EV control ECU for approximately 5 seconds or more.
  • CAN communication system
  • EV control ECU
  • Forward recognition camera
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