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DTC C1A0A: Front Radar Sensor Region Code Mismatch [10/2013 - ]: Procedure

  1. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Clear the DTCs.
    4. Enter the following menus: Powertrain / Radar Cruise / Data List / Country# (F Radar Sens).
    5. Read the Data List and check the country specification information of the front millimeter wave radar sensor and vehicle.
      RADAR CRUISE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Country# (F Radar Sens) Millimeter wave radar sensor country signal / JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFIX Actual country code -
      RESULT

      Result Proceed to
      Country specification information for vehicle and millimeter wave radar sensor match A
      Country specification information for vehicle and millimeter wave radar sensor do not match B

    B → See step   3 

    A: Go to next step 

  2. CHECK FOR DTCs (DTC C1A0A) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Clear the DTCs. Refer to DTC CHECK / CLEAR [10/2013 - ] .
    4. Perform the following to make sure that the DTC detection conditions are met.

      HINT: 

      If the detection conditions are not met, the malfunction cannot be detected.

      1. Drive the vehicle at a speed for which radar cruise control operation is possible.
      2. Turn the cruise control system on using the cruise control switch (ON-OFF button).
      3. Push the cruise control switch to -/SET to begin control of vehicle speed using the cruise control system.
    5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.
    6. Check for DTCs.

      Result

      Result Proceed to
      DTC is not output A
      DTC C1A0A is output B

    B → See step   5 

    A → See step   4 

  3. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY. Refer to  REMOVAL [10/2013 - ] 
  4. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2013 - ] 
  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to  REMOVAL [10/2013 - ]