LEXUS PARKING ASSIST-SENSOR SYSTEM (w/ Side Monitor System), Diagnostic DTC:C1AE4

DTC Code DTC Name
C1AE4 Front Right Sensor Malfunction

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
C1AE4 A malfunction of the No. 1 ultrasonic sensor (front right sensor).

  • No. 1 ultrasonic sensor (front right sensor)

  • Parking assist ECU

INSPECTION PROCEDURE

Note


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

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems may be needed Click here.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Check for DTCs Click here.

      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 NO. 1 ULTRASONIC SENSOR (FRONT RIGHT SENSOR)


    1. Replace the No. 1 ultrasonic sensor (front right 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
      DTC C1AE4 is output A
      No DTCs are output B

    B

    END

    A

    REPLACE PARKING ASSIST ECU Click here