TOYOTA PARKING ASSIST-SENSOR SYSTEM(for 8 Sensor Type), Diagnostic DTC:C1AE9

DTC Code DTC Name
C1AE9 Rear Right Sensor

DESCRIPTION

The No. 3 ultrasonic sensor (rear corner sensor RH) is installed on the rear bumper. The ECU detects obstacles based on signals received from the No. 3 ultrasonic sensor (rear corner sensor RH). If the No. 3 ultrasonic sensor (rear corner sensor RH) has an open or other malfunction, it will not function normally.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE9

Rear Right Sensor

A malfunction of the No. 3 ultrasonic sensor (rear corner sensor RH).

  • No. 3 ultrasonic sensor (rear corner sensor RH)

  • Clearance warning ECU assembly

CAUTION / NOTICE / HINT

Note:

If the DTC is output after repairs, turn the ignition switch to ON and turn the TOYOTA parking assist-sensor system on. Then clear the DTC.

Click here

PROCEDURE

  1. CHECK FOR DTC

    1. Check for DTCs.

      Click here

    Result

    Result

    Proceed to

    Only DTC C1AE9 is output

    A

    DTC C1AE9 and C1AED are output

    B

    No DTC is output

    C
    B

    GO TO DTC (C1AED)

    Click here

    C

    USE SIMULATION METHOD TO CHECK

    Click hereClick here

    A

  2. REPLACE NO. 3 ULTRASONIC SENSOR (REAR CORNER SENSOR RH)

    1. Replace the No. 3 ultrasonic sensor (rear corner sensor RH) with a normally functioning sensor.

      Click here

    Result

    Result

    NEXT
    NEXT

  3. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

    2. Check for DTCs.

      Click here

    Result

    Result

    Proceed to

    DTC C1AE9 is output (for LHD)

    A

    DTC C1AE9 is output (for RHD)

    B

    No DTC is output

    C
    A

    REPLACE CLEARANCE WARNING ECU ASSEMBLY

    Click here

    B

    REPLACE CLEARANCE WARNING ECU ASSEMBLY

    Click here

    C

    END (NO. 3 ULTRASONIC SENSOR [REAR CONER SENSOR RH] WAS DEFECTIVE)