LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE7

DESCRIPTION

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

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   INSPECT NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR)

   
   

   1. Remove the No. 1 ultrasonic sensor (rear left center sensor) (Click here).

   2. 

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

      Standard Resistance
      Tester Connection Condition Specified Condition 2 (S) - 1 (E) Always 20 to 40 kΩ

      Table 1. Text in Illustration

      *a	Component without harness connected (No. 1 Ultrasonic Sensor (Rear Left Center Sensor))

   
   
   • OKClick here
   • NG

     REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) (Click here)

2. Click here

   CHECK HARNESS AND CONNECTOR (REAR LEFT CENTER SENSOR - CLEARANCE WARNING ECU ASSEMBLY)

   
   

   1. Disconnect the V2 No. 1 ultrasonic sensor connector.

   2. Disconnect the H61 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 V2-2 (S) - H61-8 (S4) Always Below 1 Ω V2-1 (E) - H61-9 (E4) Always Below 1 Ω V2-2 (S) - Body ground Always 10 kΩ or higher V2-1 (E) - Body ground Always 10 kΩ or higher

      Result
      Result Proceed to NG A OK (for LHD) B OK (for RHD) C

   
   
   • A

     REPAIR OR REPLACE HARNESS OR CONNECTOR

   • B

     REPLACE CLEARANCE WARNING ECU ASSEMBLY (Click here)

   • C

     REPLACE CLEARANCE WARNING ECU ASSEMBLY (Click here)