Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Rear Left Sensor Malfunction (C1AE6)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE6

Rear Left Sensor Malfunction

A malfunction of the rear corner ultrasonic sensor LH.

  • Rear corner ultrasonic sensor LH
  • 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 C1AE6 is output

A

DTC C1AE6 and C1AED are output

B

No DTCs are output

C

B

GO TO DTC (C1AED)

C

USE SIMULATION METHOD TO CHECK

A

2.

REPLACE REAR CORNER ULTRASONIC SENSOR LH

(a) Replace the rear corner ultrasonic sensor LH 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 C1AE6 is output

A

No DTCs are output

B

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

END (REAR LEFT SENSOR WAS DEFECTIVE)

    Front Right Sensor Malfunction (C1AE4)

    Rear Left Center Sensor Malfunction (C1AE7)

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Occupant Classification System(for Gasoline Model): Dtc Check / Clear
    DTC CHECK / CLEAR DTC CHECK (a) Turn the engine switch off. (b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG), and wait for at least 10 seconds. (d) Turn the Techstream on. (e) Enter the following menus: Body Electrical / Occupant Detection / Trouble Codes. Body Electrical & ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

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

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