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Home >> Toyota >> 2017 >> Prius C Two >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Warning Systems >> Lane Departure Alert System - Diagnostic Codes & Circuit Tests >> Lane Departure Alert System >> DTC U0123: 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 U0155: Lost Communication with Combination Meter; DTC U0293: Lost Communication with Hybrid Control Module [11/2015 - ] >> Procedure
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DTC U0123: 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 U0155: Lost Communication with Combination Meter; DTC U0293: Lost Communication with Hybrid Control Module [11/2015 - ]: Procedure

  1. CHECK FOR DTCS 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / PCS/LDA/RSA/LVN / Trouble Codes.
    5. Clear the DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
    6. Make sure that the DTC detection conditions are met.

      HINT: 

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

    7. Check for DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
      RESULT

      Result Proceed to
      DTC U0123, U0126, U0129, U0155 and U0293 are not output A
      DTC U0123, U0126, U0129, U0155 or U0293 is output B

    Result: 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] )

    Result: 

    REFER TO CAN COMMUNICATION SYSTEM 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] )