TOYOTA PARKING ASSIST-SENSOR SYSTEM Clearance Warning Buzzer Circuit

DESCRIPTION

The No. 1 clearance warning buzzer sounds to alert the driver and the buzzed frequency changes depending on the distance to an obstacle.

WIRING DIAGRAM

A01X96KE09
*a No. 1 Clearance Warning Buzzer
*b Clearance Warning ECU Assembly

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (NO. 1 CLEARANCE WARNING BUZZER)


    1. Select the Active Test, use the GTS to generate a control command, and then check that the buzzer operates Click here.

      Clearance Sonar
      Tester Display Test Part Control Range Diagnostic Note
      Front Buzzer No. 1 clearance warning buzzer Operate or Stop -
      OK
      No. 1 clearance warning buzzer sounds.

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 1 CLEARANCE WARNING BUZZER)


    1. Disconnect the F92 clearance warning ECU assembly connector.

    2. Disconnect the E10 No. 1 clearance warning buzzer connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F92-14 (BBZ) - E10-1 (Z+) Always Below 1 Ω
      F92-13 (EF) - E10-2 (Z-) Always Below 1 Ω
      F92-14 (BBZ) - Body ground Always 10 kΩ or higher
      F92-13 (EF) - Body ground Always 10 kΩ or higher

    OK

    REPLACE NO. 1 CLEARANCE WARNING BUZZER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR