Lexus ES manuals

Lexus ES: Front Left Center Sensor (C1AE2)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE2

Front Left Center Sensor

A malfunction of the front center ultrasonic sensor LH.

  • Front center ultrasonic sensor LH
  • Clearance warning ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

If DTCs are output after repairs, turn the power switch on (IG) and the parking support alert 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 C1AE2 is output

A

DTC C1AE2 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 CENTER ULTRASONIC SENSOR LH

(a) Replace the front center ultrasonic sensor LH with new or 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 C1AE2 is output

A

No DTCs are output

B

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

END (FRONT LEFT CENTER SENSOR WAS DEFECTIVE)

READ NEXT:

 Front Right Center Sensor (C1AE3)

DESCRIPTION The front center ultrasonic sensor RH is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front center ultrasonic sens

 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 sens

 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

SEE MORE:

 Parts Location

PARTS LOCATION ILLUSTRATION *A w/ Auto Wiper System - - *1 WINDSHIELD WIPER MOTOR ASSEMBLY *2 RAIN SENSOR *3 LEVEL WARNING SWITCH ASSEMBLY *4 WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY *5 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - WIPER FUSE

 System Diagram

SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Main Body ECU (Multiplex Network Body ECU) Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly) Sliding roof operation permission signal IG signal Front door courtesy light switch assembly signal Key-linked

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