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DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed; DTC U0300-57: Internal Control Module Software Incompatibility Invalid / Incompatible Software Component [08/2021 - ]: Procedure

  1. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      For HV Model A
      For Gasoline Model B

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  2

  2. CHECK FOR DTC (Hybrid Control) 
    1. Check the DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      HINT: 

      If the pre-collision system outputs U0300-51 or U0300-57, hybrid control system DTCs may also have been output. Check the hybrid control system first.

      OK

      Hybrid control system DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO HYBRID CONTROL SYSTEM 

    For NICKEL METAL HYDRIDE BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

    For LITHIUM-ION BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - ]

    Result: 

    OK 

    See step  3

  3. CHECK FOR DTC (HEALTH CHECK) 
    1. Using the Techstream, perform the Health Check.
    2. Check for DTCs.

      OK

      ECUs other than the forward recognition camera do not output specification information mismatch DTCs related to the hybrid vehicle control ECU.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  4

  4. READ VALUE USING TECHSTREAM (Pre-Collision System) 
    1. Read the Data List according to the display on the Techstream.

      Body Electrical > Pre-Collision System > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Vehicle Information (Conv/HV/EV) Vehicle information (Conv/HV/EV) Unknown / Conv / HV/EV Unknown: Vehicle information not confirmed
      Conv: Conventional
      HV/EV: Hybrid vehicle      		 -
      Vehicle Information (Transmission Type) Vehicle information (transmission type) MT, AT, CVT, MMT, SMT, HV/EV - AT or Unknown Displays the type of transmission -

      Body Electrical > Pre-Collision System > Data List 

      Tester Display
      Vehicle Information (Conv/HV/EV)
      Vehicle Information (Transmission Type)

      HINT: 

      • When the specification stored by the forward recognition camera and the vehicle specification do not match, there is a malfunction in the specification information stored by the forward recognition camera. Therefore, replace the forward recognition camera.
      • When the specification stored by the forward recognition camera and the vehicle specification match, an hybrid vehicle control ECU with different specifications may be installed. Therefore, replace the hybrid vehicle control ECU.

      Result

      Result Proceed to
      Specification stored by the forward recognition camera and vehicle specification do not match A
      "Unknown" is displayed
      Specification stored by the forward recognition camera and vehicle specification match B

    Result: 

    A 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [08/2021 - ] 

    Result: 

    B 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

  5. CHECK FOR DTC (Engine) 
    1. Check the DTCs.

      Powertrain > Engine > Trouble Codes 

      HINT: 

      If the pre-collision system outputs U0300-51 or U0300-57, SFI system DTCs may also have been output. Check the SFI system first.

      OK

      SFI system DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO SFI SYSTEM 

    For A25A-FKS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - ]

    For 2GR-FKS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

    Result: 

    OK 

    See step  6

  6. CHECK FOR DTC (HEALTH CHECK) 
    1. Using the Techstream, perform the Health Check.
    2. Check for DTCs.

      OK

      ECUs other than the forward recognition camera do not output specification information mismatch DTCs related to the ECM.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE ECM 

    For A25A-FKS: Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

    For 2GR-FKS: Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

    Result: 

    OK 

    See step  7

  7. READ VALUE USING TECHSTREAM (Pre-Collision System) 
    1. Read the Data List according to the display on the Techstream.

      Body Electrical > Pre-Collision System > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Vehicle Information (Conv/HV/EV) Vehicle information (Conv/HV/EV) Unknown / Conv / HV/EV Unknown: Vehicle information not confirmed
      Conv: Conventional
      HV/EV: Hybrid vehicle      		 -
      Vehicle Information (Transmission Type) Vehicle information (transmission type) MT, AT, CVT, MMT, SMT, HV/EV - AT or Unknown Displays the type of transmission -

      Body Electrical > Pre-Collision System > Data List 

      Tester Display
      Vehicle Information (Conv/HV/EV)
      Vehicle Information (Transmission Type)

      HINT: 

      • When the specification stored by the forward recognition camera and the vehicle specification do not match, there is a malfunction in the specification information stored by the forward recognition camera. Therefore, replace the forward recognition camera.
      • When the specification stored by the forward recognition camera and the vehicle specification match, an ECM with different specifications may be installed. Therefore, replace the ECM.

      Result

      Result Proceed to
      Specification stored by the forward recognition camera and vehicle specification do not match A
      "Unknown" is displayed
      Specification stored by the forward recognition camera and vehicle specification match B

    Result: 

    A 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [08/2021 - ] 

    Result: 

    B 

    REPLACE ECM 

    For A25A-FKS: Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

    For 2GR-FKS: Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

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