TOYOTA PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE7

DTC Code DTC Name
C1AE7 Rear Left Center Sensor Malfunction

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
C1AE7 A malfunction of the No. 1 ultrasonic sensor (RLC sensor).

  • No. 1 ultrasonic sensor (RLC sensor)

  • Parking assist ECU*1

  • Clearance warning ECU assembly*2

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC C1AE7 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. REPLACE NO. 1 ULTRASONIC SENSOR (RLC SENSOR)


    1. Replace the No. 1 ultrasonic sensor (RLC sensor) with a normally functioning one Click here.


    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AE7 is not output A
      DTC C1AE7 is output (w/ Side Monitor System) B
      DTC C1AE7 is output (w/o Side Monitor System) C

    A

    END (NO. 1 ULTRASONIC SENSOR [RLC SENSOR] IS DEFECTIVE)

    B

    REPLACE PARKING ASSIST ECU Click here

    C

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here