LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE1

DTC Code	DTC Name
C1AE1	Front Left Sensor Malfunction

DESCRIPTION

The No. 2 ultrasonic sensor (front corner sensor LH) is installed on the front bumper. The ECU detects obstacles based on signals received from the No. 2 ultrasonic sensor (front corner sensor LH). If the No. 2 ultrasonic sensor (front corner sensor LH) has an open or other malfunction, it will not function normally.


DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1AE1	Front Left Sensor Malfunction	A malfunction of the No. 2 ultrasonic sensor (front corner sensor LH).	No. 2 ultrasonic sensor (front corner sensor LH) Clearance warning ECU

CAUTION / NOTICE / HINT

Note:

If the DTC is output after repairs, turn the engine switch on (IG) and turn the LEXUS parking assist-sensor system on. Then clear the DTC (Click here).

PROCEDURE

CHECK FOR DTC

Check for DTCs.
Click here

Body Electrical > Clearance Sonar > Trouble Codes

Result


Result	Proceed to
Only DTC C1AE1 is output	A
DTC C1AE1 and C1AEC are output	B
No DTC is output	C

B

GO TO DTC (C1AEC)

Click here

C

USE SIMULATION METHOD TO CHECK

Click here Click here

A

REPLACE NO. 2 ULTRASONIC SENSOR (FRONT CORNER SENSOR LH)

Replace the No. 2 ultrasonic sensor (front corner sensor LH) with a normally functioning sensor.
Click here

Tip:
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.

Result


Result
NEXT

Clear the DTCs.
Click here

Body Electrical > Clearance Sonar > Clear DTCs
Check for DTCs.
Click here

Body Electrical > Clearance Sonar > Trouble Codes

Result


Result	Proceed to
DTC C1AE1 is output	A
No DTC is output	B

A

REPLACE CLEARANCE WARNING ECU

Click here

B

END (NO. 2 ULTRASONIC SENSOR WAS DEFECTIVE)