TOYOTA PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE9

DTC Code DTC Name
C1AE9 Rear Right Sensor

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AE9 Rear Right Sensor A malfunction of the rear corner ultrasonic sensor RH.

  • Rear corner ultrasonic sensor RH

  • 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 C1AE9 is output A
      DTC C1AE9 and C1AED are output B
      No DTC is output C

    B

    GO TO DTC (C1AED) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. REPLACE REAR CORNER ULTRASONIC SENSOR RH


    1. Replace the rear corner ultrasonic sensor RH 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 C1AE9 is output A
      No DTC is output B

    A

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

    B

    END (REAR CORNER ULTRASONIC SENSOR RH WAS DEFECTIVE)