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Home >> Toyota >> 2021 >> RAV4 Adventure >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Automatic High Beam System - Diagnostic Codes & Symptom Tests >> Automatic High Beam System >> DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0125-87: Lost Communication With Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle 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 [12/2021 - ] >> Description
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DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0125-87: Lost Communication With Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle 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 [12/2021 - ]: 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 DTC Output from
U0100-87 Lost Communication With ECM/PCM "A" Missing Message The forward recognition camera does not receive data from the ECM for approximately 5 seconds or more.
  • CAN communication system
  • ECM
 Front Recognition Camera (Front Lighting Control)
U0125-87 Lost Communication With Multi-axis Acceleration Sensor Module Missing Message The airbag ECU assembly (yaw rate sensor) does not receive data from the ECM for approximately 5 seconds or more.
  • CAN communication system
  • Airbag ECU assembly (yaw rate sensor)
 Front Recognition Camera (Front Lighting Control)
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message The forward recognition camera does not receive data from the steering sensor for approximately 5 seconds or more.
  • CAN communication system
  • Steering sensor
 Front Recognition Camera (Front Lighting Control)
U0129-87 Lost Communication with Brake System Control Module Missing Message for HV Model: 
  1. Communication stop occurs between the forward recognition camera and brake actuator assembly (No. 2 skid control ECU) continuously for 5 seconds or more.

for Gasoline Model: 
  1. Communication stop occurs between the forward recognition camera and brake actuator assembly (skid control ECU) continuously for 5 seconds or more.
 for HV Model: 
  • CAN communication system
  • Brake actuator assembly (No. 2 skid control ECU)
  • Forward recognition camera

for Gasoline Model: 
  • CAN communication system
  • Brake actuator assembly (skid control ECU)
  • Forward recognition camera
 Front Recognition Camera (Front Lighting Control)
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)
 Front Recognition Camera (Front Lighting Control)
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