Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000002D8AE
Model Year Start: 2024 Model: GR Corolla Prod Date Range: [08/2023 -           ]
Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: C1AE296; Ultrasonic Sensor (Front Left Center) Component Internal Failure; 2024 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2023 -        ]

DTC

C1AE296

Ultrasonic Sensor (Front Left Center) Component Internal Failure

DESCRIPTION

The front center ultrasonic sensor LH is installed on the front bumper. The clearance warning ECU assembly detects obstacles based on signals it receives from the front center ultrasonic sensor LH. If an open circuit or other malfunction occurs in the front center ultrasonic sensor LH, the front center ultrasonic sensor LH does not operate correctly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

C1AE296

Ultrasonic Sensor (Front Left Center) Component Internal Failure

Front center ultrasonic sensor LH failure
  • Front center ultrasonic sensor LH
  • Clearance warning ECU assembly

Clearance Warning

B

CAUTION / NOTICE / HINT

NOTICE:

  • Perform registration after replacing or removing and installing the ultrasonic sensor or clearance warning ECU assembly.

    Click here 2024 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2023 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: CALIBRATION

  • If a DTC is detected again after the repair, turn the ignition switch to ON and turn the intuitive parking assist system on, and then clear the DTC.

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs

NEXT

2.

CHECK DTC OUTPUT

(a) Check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes

Result

Proceed to

DTCs are not output

A

C1AE296 and C1AE287 are output

B

C1AE296 is output

C
A

USE SIMULATION METHOD TO CHECK

B

GO TO DTC (C1AEC287)

C

3.

REPLACE FRONT CENTER ULTRASONIC SENSOR LH

(a) Replace the front center ultrasonic sensor LH with a known good one.

HINT:

  • Click here 2024 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2023 -        ]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Front Side): REMOVAL
  • 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

4.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs

NEXT

5.

CHECK DTC OUTPUT

(a) Check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes

Result

Proceed to

DTCs are not output

A

C1AE296 is output

B
A

END (FRONT CENTER ULTRASONIC SENSOR LH WAS DEFECTIVE)
B

REPLACE CLEARANCE WARNING ECU ASSEMBLY