TOYOTA PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE4

DTC Code DTC Name
C1AE4 Front Right Sensor Malfunction

DESCRIPTION

The front corner ultrasonic sensor RH is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front corner ultrasonic sensor RH. If the front corner ultrasonic sensor RH has an open circuit or other malfunction, it will not function normally.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AE4 Front Right Sensor Malfunction A malfunction of the front corner ultrasonic sensor RH.

  • Front corner ultrasonic sensor RH

  • Clearance warning ECU assembly

CAUTION / NOTICE / HINT

Note

If DTCs are output after repairs, turn the engine switch on (IG) and the TOYOTA parking assist-sensor system on. Then clear the DTCs.

Click here

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Check for DTCs.


      Body Electrical > IPA/ICS/Clearance Sonar > Trouble Codes
      Result
      Result Proceed to
      Only DTC C1AE4 is output A
      DTC C1AE4 and C1AEC are output B
      No DTCs are output C

    B

    GO TO DTC (C1AEC) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. REPLACE FRONT CORNER ULTRASONIC SENSOR RH


    1. Replace the front corner ultrasonic sensor RH with a known good one.

      Click here

      Tech Tips

      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

    NEXT

  3. CHECK DTC OUTPUT


    1. Clear the DTCs.


      Body Electrical > IPA/ICS/Clearance Sonar > Clear DTCs

    2. Check for DTCs.


      Body Electrical > IPA/ICS/Clearance Sonar > Trouble Codes
      Result
      Result Proceed to
      DTC C1AE4 is output A
      No DTCs are output B

    A

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

    B

    END (FRONT CORNER ULTRASONIC SENSOR RH WAS DEFECTIVE)