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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Parking Support Alert System - Diagnostic Codes (2 Of 2), Circuit & Symptom Tests >> Parking Support Alert System >> DTC C1AF2-96: Ultrasonic Sensor (Rear Right Side) Component Internal Failure [10/2023 - ] >> Procedure

DTC C1AF2-96: Ultrasonic Sensor (Rear Right Side) Component Internal Failure [10/2023 - ]: Procedure

  1. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Clearance Warning > Trouble Codes 

      Result

      Result Proceed to
      C1AF2-96 is not output A
      C1AF2-96 is output B
      C1AF2-87 and C1AF2-96 are output C

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

    Result: 

    GO TO DTC (C1AF2-87). Refer to  DTC C1AF2-87: Ultrasonic Sensor (Rear Right Side) Missing Message [10/2023 - ]  

    Result: 

    See step  2

  2. REPLACE REAR SIDE ULTRASONIC SENSOR (RRS SENSOR) 
    1. Replace the rear side ultrasonic sensor (RRS sensor) with a known good one.

      Refer to REMOVAL [10/2023 - ]

      HINT: 

      All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Clearance Warning > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Clearance Warning > Trouble Codes 

      Result

      Result Proceed to
      C1AF2-96 is not output A
      C1AF2-96 is output B

    Result: 

    END (REAR SIDE ULTRASONIC SENSOR [RRS SENSOR] WAS DEFECTIVE) 

    Result: 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [10/2023 - ]