LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE7

DTC Code DTC Name
C1AE7 Rear Left Center Sensor Malfunction

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE7

Rear Left Center Sensor Malfunction

A malfunction of the No. 1 ultrasonic sensor (rear left center sensor).

  • No. 1 ultrasonic sensor (rear left center sensor)

  • Clearance warning ECU (w/o Parking Assist Monitor System and/or Side MonitorSystem)

  • Parking assist ECU (w/ Parking Assist Monitor System and/or Side MonitorSystem)

CAUTION / NOTICE / HINT

Note:

If the DTC is output after repairs, turn the engine switch on (IG) and turn the LEXUS 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 C1AE7 is output

      A

      DTC C1AE7 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 NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR)

    1. Replace the No. 1 ultrasonic sensor (rear left center sensor) with a normally functioning sensor.

      Click here

      Tip:

      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.

      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 C1AE7 is output (w/o Parking Assist Monitor System and/or Side Monitor System)

      A

      DTC C1AE7 is output (w/ Parking Assist Monitor System and/or Side Monitor System)

      B

      No DTC is output

      C
    A

    REPLACE CLEARANCE WARNING ECU

    Click here

    B

    REPLACE PARKING ASSIST ECU

    Click here

    C

    END (NO. 1 ULTRASONIC SENSOR WAS DEFECTIVE)