Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Front Right Sensor Malfunction (C1AE4)

DESCRIPTION

The front corner ultrasonic sensor RH is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front corner ultrasonic sensor RH. If the front corner ultrasonic sensor RH has an open circuit or other malfunction, it will not function normally.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE4

Front Right Sensor Malfunction

A malfunction of the front corner ultrasonic sensor RH.

  • Front corner ultrasonic sensor RH
  • Clearance warning ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

If DTCs are output after repairs, turn the engine switch on (IG) and the intuitive parking assist system on. Then clear the DTCs.

Click here

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Check for DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

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)

C

USE SIMULATION METHOD TO CHECK

A

2.

REPLACE FRONT CORNER ULTRASONIC SENSOR RH

(a) Replace the front corner ultrasonic sensor RH with a known good one.

Click here

HINT:

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

(a) Clear the DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs

(b) Check for DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

Result

Proceed to

DTC C1AE4 is output

A

No DTCs are output

B

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

END (FRONT RIGHT SENSOR WAS DEFECTIVE)

    Front Right Center Sensor (C1AE3)

    Rear Left Sensor Malfunction (C1AE6)

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Panoramic View Monitor System(for Hv Model): Back Camera Power Supply Failure (C1621)
    DESCRIPTION This DTC is stored if the television camera assembly judges as a result of its self check that the signals or signal lines between the television camera assembly and parking assist ECU are not normal. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from C1621 Back ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

    © 2025 Copyright www.tavalon.net
    0.0143