TOYOTA PARKING ASSIST-SENSOR SYSTEM (for 8 Sensor Type) Clearance Warning ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the clearance warning ECU.

WIRING DIAGRAM

A0098U9E02

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BATTERY)


    1. A009ADGE04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Clearance Warning ECU)

      Disconnect the I1 clearance warning ECU connector.

    2. Measure the voltage according to the value(s) on the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I1-15 (IG) - Body ground Ignition switch ON 11 to 14 V
      I1-15 (IG) - Body ground Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BODY GROUND)


    1. A009ADGE05
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Clearance Warning ECU)

      Disconnect the I1 clearance warning ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I1-17 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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