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TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/o Multi-display) Clearance Warning Buzzer Circuit

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DTC Code DTC Name
  Clearance Warning Buzzer Circuit
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DESCRIPTION

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

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

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

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PROCEDURE


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


    1. Disconnect the I1 clearance warning ECU connector.

    2. Disconnect the G161 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) - G161-1 (Z+) Always Below 1 Ω
      I1-12 (EF) - G161-2 (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

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here