LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE9

DTC Code DTC Name
C1AE9 Rear Right Sensor Malfunction

DESCRIPTION

The No. 1 ultrasonic sensor (rear right corner sensor) is installed on the rear bumper. The ECU detects obstacles based on signals received from the rear right corner sensor. If the rear right corner sensor has an open or other malfunction, it will not function normally.

DTC Code DTC Detection Condition Trouble Area
C1AE9 Malfunction of No. 1 ultrasonic sensor (rear right corner sensor)

  • No. 1 ultrasonic sensor (rear right corner sensor)

  • Clearance warning ECU

INSPECTION PROCEDURE

Note

If the DTC is output after repairs, turn the power switch on (IG) and move the shift lever to R. Then clear the DTC.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AE9 is output A
      No DTC is output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CORNER SENSOR)


    1. Replace the ultrasonic sensor Click here with a normally functioning sensor.


    NEXT

  3. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC C1AE9 is not output.

    NG

    REPLACE CLEARANCE WARNING ECU Click here

    OK

    END (NO. 1 ULTRASONIC SENSOR [REAR RIGHT CORNER SENSOR] IS DEFECTIVE)