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Home >> Toyota >> 2017 >> Corolla LE >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Lane Departure Alert System (W/ Steering Control) - Diagnostic Codes & Circuit Tests (Model Code: ZRE172) >> LANE DEPARTURE ALERT SYSTEM (W/ Steering Control) >> DTC C1AAD: Vehicle Information Initialization Incomplete [08/2016 - ] >> Procedure
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DTC C1AAD: Vehicle Information Initialization Incomplete [08/2016 - ]: Procedure

  1. CHECK FOR DTCs (CAN COMMUNICATION DTC OUTPUT) 

    HINT: 

    The forward recognition camera communicates with the ECM via CAN communication. Confirm that the CAN communication system is functioning normally before proceeding.

    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Chassis > LKA/LDA > Trouble Codes 

      Result

      Result Proceed to
      DTC U0100 is not output A
      DTC U0100 is output B

    Result:  2

    GO TO CAN COMMUNICATION SYSTEM:  HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ] 

    Result:  1

    See step  2

  2. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / Front Recognition Camera / Data List.
    5. Read the Data List according to the display on the Techstream.

      Chassis > Front Recognition Camera > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Vehicle Information (2WD/4WD) Vehicle information 2WD, 4WD or Unknown 2WD: for 2WD
      4WD: for AWD
      Unknown: Vehicle information not confirmed
      -
      Vehicle Information (Conv/HV) Vehicle information Conv, HV or Unknown Conv: Conventional
      HV: Hybrid vehicle
      Unknown: Vehicle information not confirmed
      -

      Chassis > Front Recognition Camera > Data List 

      Tester Display
      Vehicle Information (2WD/4WD)
      Vehicle Information (Conv/HV)

      HINT: 

      • If "Unknown" is displayed, the ECM cannot send vehicle information or the forward recognition camera cannot store the vehicle information. Check for DTCs, replace the ECM if necessary and recheck for DTCs. If the DTC is output again, replace the forward recognition camera.
      • If "Unknown" is not displayed, the DTC is stored even though the vehicle information is stored in the forward recognition camera. Replace the forward recognition camera.

      Result

      Result Proceed to
      "Unknown" is displayed A
      "Unknown" is not displayed B

    Result:  2

    REPLACE FORWARD RECOGNITION CAMERA:  COMPONENTS [08/2016 - ] 

    Result:  1

    See step  3

  3. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM) 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Chassis > LKA/LDA > Clear DTCs 

    2. Perform the following procedure.

      HINT: 

      If the following procedure is not performed, the previously output DTC cannot be detected.

      1. Turn the ignition switch to ON and wait 2 seconds or more.
    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Chassis > LKA/LDA > Trouble Codes 

      Result

      Result Proceed to
      DTC C1AAD is not output A
      DTC C1AAD is output B

    Result:  1

    USE SIMULATION METHOD TO CHECK:  HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - 08/2017]  ,  HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - ] 

    Result:  2

    See step  4

  4. REPLACE ECM 
    1. Replace the ECM.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  5

  5. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM) 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Chassis > LKA/LDA > Clear DTCs 

    2. Perform the following procedure.

      HINT: 

      If the following procedure is not performed, the previously output DTC cannot be detected.

      1. Turn the ignition switch to ON and wait 2 seconds or more.
    3. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Chassis > LKA/LDA > Trouble Codes 

      Result

      Result Proceed to
      DTC C1AAD is not output A
      DTC C1AAD is output B

    Result:  1

    END (ECM WAS DEFECTIVE) 

    Result:  2

    REPLACE FORWARD RECOGNITION CAMERA:  COMPONENTS [08/2016 - ]