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Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Restraints >> Seat Belts >> Pre-Collision System - Diagnostic Codes & Circuit Tests >> Pre-Collision System >> DTC U0125: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0293: Lost Communication with EV Control System [06/2015 - 11/2018] >> Procedure
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DTC U0125: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0293: Lost Communication with EV Control System [06/2015 - 11/2018]: Procedure

  1. CHECK FOR DTCs (PRE-COLLISION 2) 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2015 - 11/2018]

      Body Electrical > Pre-Collision 2 > Clear DTCs 

    2. Make sure that the DTC detection conditions are met.

      HINT: 

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check the DTCs.

      Refer to DTC CHECK / CLEAR [06/2015 - 11/2018]

      Body Electrical > Pre-Collision 2 > Trouble Codes 

      Result

      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output B

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - 11/2018] 

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - 11/2018]