THEFT DETERRENT SYSTEM ECU Power Source Circuit

DESCRIPTION

This circuit provides power for main body ECU operation.

WIRING DIAGRAM

A011AP5E01

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK)


    1. A0119Y9E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block)
      *2

      Front view of wire harness connector

      (to Instrument Panel Junction Block)

      Disconnect the 3B and 3A junction connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      3B-37 - Body ground Always 11 to 14 V
      3A-1 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - BODY GROUND)


    1. A011AHOE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block)

      Disconnect the 3D junction block connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3D-5 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK INSTRUMENT PANEL JUNCTION BLOCK (POWER SOURCE, BODY GROUND)


    1. Reconnect the 3A, 3B, and 3D junction block connectors.

      A011BA0E01
      Text in Illustration
      *1

      Component without main body ECU

      (Instrument Panel Junction Block)

    2. Remove the main body ECU Click here.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      3F-30 (ECUB) - Body ground Always 11 to 14 V
      3F-31 (ALTB) - Body ground Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      3F-11 (GND1) - Body ground Always Below 1 Ω

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK

    OK

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