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Home >> Lexus >> 2017 >> ES 350 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Front Recognition Camera System (Diagnostic Codes & Circuit Tests) >> Front Recognition Camera System (DTC Listing) >> DTC C1AA3: Vehicle Speed Sensor Circuit (07/2015 -) >> Procedure

DTC C1AA3: Vehicle Speed Sensor Circuit (07/2015 -): Procedure

  1. CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.
    5. Check if DTCs are output (Refer to DTC CHECK / CLEAR (07/2015 -) ).

      Result

      Result Proceed to
      Vehicle stability control system DTCs are not output. A
      Vehicle stability control system DTCs are output. B
    6. Turn the engine switch off.

    Result:  B

    GO TO VEHICLE STABILITY CONTROL SYSTEM 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART (07/2015 -) )

    Result:  A

    See step  2

  2. CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / Front Recognition Camera / 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 C1AA3 is output A
      DTC C1AA3 is not output B
    8. Turn the engine switch off.

    Result:  B

    USE SIMULATION METHOD TO CHECK 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING (07/2015 -) )

    Result:  A

    See step  3

  3. REPLACE FORWARD RECOGNITION CAMERA 
    1. Replace the forward recognition camera (Refer to REMOVAL (07/2015 -) ).
    2. Adjust the forward recognition camera (Refer to ADJUSTMENT (07/2015 -) ).

    Result:  NEXT

    NEXT 

    See step  4

  4. CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / Front Recognition Camera / 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 C1AA3 is output A
      DTC C1AA3 is not output B

    Result:  A

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) 

    (Refer to COMPONENTS (07/2015 -) )

    Result:  B

    END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)