TOYOTA PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE1

DTC Code DTC Name
C1AE1 Front Left Sensor

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AE1 Front Left Sensor A malfunction of the front corner ultrasonic sensor LH.

  • Front corner ultrasonic sensor LH

  • Clearance warning ECU assembly

CAUTION / NOTICE / HINT

Note

If the DTC is output after repairs, turn the engine switch on (IG) and turn the TOYOTA parking assist-sensor system on. Then clear the DTC Click here.

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Clearance Sonar > Trouble Codes
      Result
      Result Proceed to
      Only DTC C1AE1 is output A
      DTC C1AE1 and C1AEC are output B
      No DTC is output C

    B

    GO TO DTC (C1AEC) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. REPLACE FRONT CORNER ULTRASONIC SENSOR LH


    1. Replace the front corner ultrasonic sensor LH with a normally functioning sensor.

      Click here

      Result
      Result
      NEXT

    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Clearance Sonar > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Clearance Sonar > Trouble Codes
      Result
      Result Proceed to
      DTC C1AE1 is output A
      No DTC is output B

    A

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

    B

    END (FRONT CORNER ULTRASONIC SENSOR LH)