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Home >> Toyota >> 2017 >> Prius V Two >> 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 U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0293: Lost Communication with HV ECU; DTC U1104: Lost Communication with Driving Support ECU [08/2015 - ] >> Procedure
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DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0293: Lost Communication with HV ECU; DTC U1104: Lost Communication with Driving Support ECU [08/2015 - ]: Procedure

  1. CHECK FOR DTCs (CAN COMMUNICATION SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the tester on.
    4. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.
    5. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    6. Check for DTCs.

      Result

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

    B → Refer to   2 

    A → Refer to   3 

  2. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] 
  3. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ]