TOYOTA PARKING ASSIST-SENSOR SYSTEM (for 4 Sensor Type) Clearance Warning Buzzer Circuit

DESCRIPTION

The clearance warning buzzer sounds to alert the driver. The sounding pattern changes according to the distance to the obstacle.

WIRING DIAGRAM

A009BDXE01

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


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


    1. Disconnect the I1 clearance warning ECU connector.

    2. Disconnect the G34 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
      I1-14 (BBZ) - G34-1 (Z+) Always Below 1 Ω
      I1-12 (EF) - G34-2 (Z-) Always Below 1 Ω
      I1-14 (BBZ) - Body ground Always 10 kΩ or higher
      I1-12 (EF) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here