LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE4

DTC Code DTC Name
C1AE4 Front Right Sensor Malfunction

DESCRIPTION

The No. 1 ultrasonic sensor (front corner sensor RH) is installed on the front bumper. The ECU detects obstacles based on signals received from the No. 1 ultrasonic sensor (front corner sensor RH). If the No. 1 ultrasonic sensor (front corner sensor RH) has an open circuit or other malfunction, it will not function normally.

DTC Code DTC Detection Condition Trouble Area
C1AE4 A malfunction of the No. 1 ultrasonic sensor (front corner sensor RH).

  • No. 1 ultrasonic sensor (front corner sensor RH)

  • Harness or connector

  • Clearance warning ECU assembly

WIRING DIAGRAM

A01FDWGE20

INSPECTION PROCEDURE

Note

If DTCs are output after repairs, turn the engine switch on (IG) and turn the clearance sonar main switch on. Then clear the DTCs Click here.

PROCEDURE


  1. INSPECT NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR RH)


    1. Remove the No. 1 ultrasonic sensor (front corner sensor RH) Click here.

    2. Inspect the No. 1 ultrasonic sensor (front corner sensor RH) Click here.


    NG

    REPLACE NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR RH) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR RH) - CLEARANCE WARNING ECU ASSEMBLY)


    1. Disconnect the D8 No. 1 ultrasonic sensor (front corner sensor RH) connector.

    2. Disconnect the N10 clearance warning ECU assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D8-2 (S) - N10-19 (S5) Always Below 1 Ω
      D8-1 (E) - N10-20 (E5) Always Below 1 Ω
      D8-2 (S) - Body ground Always 10 kΩ or higher
      D8-1 (E) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here