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Home >> Lexus >> 2017 >> ES 300h >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System (Diagnostic Codes & Circuit Tests) >> Pre-Collision System >> DTC C1AA0: Front Camera Module Circuit [07/2015 - ] >> Procedure
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DTC C1AA0: Front Camera Module Circuit [07/2015 - ]: Procedure

  1. CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM) 
    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 / Front Recognition Camera / Trouble Codes.
    5. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]
      RESULT

      Result Proceed to
      Front recognition camera system DTCs are not output A
      Front recognition camera system DTCs are output B

    Result:  B

    B 

    GO TO FRONT RECOGNITION CAMERA SYSTEM 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ]

    Result:  A

    A 

    See step  2

  2. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
    5. Clear the DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]
    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 [07/2015 - ]
      RESULT

      Result Proceed to
      DTC C1AA0 is output A
      DTC C1AA0 is not output B

    Result:  B

    B 

    USE SIMULATION METHOD TO CHECK (SYMPTOM SIMULATION) 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ]

    Result:  A

    A 

    See step  3

  3. REPLACE DRIVING SUPPORT ECU ASSEMBLY 
    1. Replace the driving support ECU assembly. Refer to REMOVAL [07/2015 - ]

    Result:  NEXT

    NEXT 

    See step  4

  4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
    5. Clear the DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]
    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 [07/2015 - ]
      RESULT

      Result Proceed to
      DTC C1AA0 is output A
      DTC C1AA0 is not output B

    Result:  A

    A 

    REPLACE FORWARD RECOGNITION CAMERA 

    Refer to COMPONENTS [07/2015 - ]

    Result:  B

    B 

    END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE) 

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