LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE1

DTC Code DTC Name
C1AE1 Front Left Sensor Malfunction

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
C1AE1 A malfunction of the No. 1 ultrasonic sensor (front left sensor).

  • No. 1 ultrasonic sensor (front left sensor)

  • Clearance warning ECU

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Check for DTCs Click here.

      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 NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR)


    1. Replace the No. 1 ultrasonic sensor (front left sensor) 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.


    NEXT

  3. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      No DTC is output OK
      DTC C1AE1 is output NG

    NG

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

    OK

    END (FRONT LEFT SENSOR WAS DEFECTIVE)