Toyota Corolla Cross: Ultrasonic Sensor (Rear Left Center) Component Internal Failure (C1AE796)

DESCRIPTION

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

CAUTION / NOTICE / HINT

NOTICE:

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

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• 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

(a) Clear the DTCs.

NEXT

(a) Check for DTCs.

A

USE SIMULATION METHOD TO CHECK

B

GO TO DTC (C1AE787)

D

GO TO DTC CHART

C

(a) Replace the rear center ultrasonic sensor (RLC sensor) with a known good one.

HINT:

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• 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

(a) Clear the DTCs.

NEXT

(a) Check for DTCs.

A

END (REAR CENTER ULTRASONIC SENSOR [RLC SENSOR] WAS DEFECTIVE)

B

REPLACE CLEARANCE WARNING ECU ASSEMBLY

C

GO TO DTC CHART

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