TOYOTA PARKING ASSIST-SENSOR SYSTEM Clearance Warning ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the clearance warning ECU assembly.

WIRING DIAGRAM

A003SHIE02

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY - BATTERY)


    1. Disconnect the E106 connector from the back sonar or clearance sonar switch assembly.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E106-6 (IG) - Body ground Power switch on (IG) 11 to 14 V
      E106-6 (IG) - Body ground Power switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY


    1. Remove the back sonar or clearance sonar switch assembly Click here.

    2. A003T9VE01
      Text in Illustration
      *a

      Component without harness connected

      (Back Sonar or Clearance Sonar Switch Assembly)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (IG) - 3 (ECU) Pressed (on) Below 1 Ω
      6 (IG) - 3 (ECU) Not pressed (off) 10 kΩ or higher

    NG

    REPLACE BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH- CLEARANCE WARNING ECU)


    1. Disconnect the E106 connector from the back sonar or clearance sonar switch assembly.

    2. Disconnect the E104 connector from the clearance warning ECU assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E106-3 (ECU) - E104-9 (CLSW) Always Below 1 Ω
      E106-7 (E) - E104-23 (OP) Always Below 1 Ω
      E106-3 (ECU) - Body ground Always 10 kΩ or higher
      E106-7 (E) - 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