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Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System - Diagnostic Codes & Circuit Tests >> Dynamic Radar Cruise Control 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 U0293: Lost Communication with Hybrid Vehicle Control System; DTC U1104: Lost Communication with Driving Support ECU [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 U0293: Lost Communication with Hybrid Vehicle Control System; DTC U1104: Lost Communication with Driving Support ECU [06/2015 - 11/2018]: Procedure

  1. CHECK FOR DTC 
    1. Clear the DTCs.

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

      Powertrain > Radar Cruise > 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]

      Powertrain > Radar Cruise > Trouble Codes 

      Result

      Result Proceed to
      DTC U0125, U0126, U0129, U0293 and U1104 are not output A
      DTC U0125, U0126, U0129, U0293 and U1104 is 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]