THEFT DETERRENT SYSTEM Glass Breakage Sensor Circuit

DESCRIPTION

When the glass breakage sensor detects that the back door glass is broken, the main body ECU will set off the alarm for 30 seconds.

WIRING DIAGRAM

A002PATE02
*a Back Door Glass (Glass Breakage Sensor)
*b Main Body ECU (Instrument Panel Junction Block Assembly)

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (GLASS BREAKAGE SENSOR)


    1. Using the intelligent tester, read the Data List Click here.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Sealed Glas Brak Sen Glass breakage sensor detection / With or Without

      With: Glass breakage sensor operates

      Without: Glass breakage sensor does not operate

      		 -
      OK
      WITH (glass breakage sensor operates) appears on screen.

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    NG

  2. INSPECT BACK DOOR GLASS (GLASS BREAKAGE SENSOR)


    1. Disconnect the S9 glass connector.

      A002NLTE02

    2. Disconnect the S2 defogger connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (SSR+) - 1 (E) Always Below 1 Ω
      Text in Illustration
      *1 From Inside Vehicle - -

    NG

    REPLACE BACK DOOR GLASS (GLASS BREAKAGE SENSOR) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK DOOR GLASS AND BODY GROUND)


    1. A002Q1ZE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU [Instrument Panel Junction Block Assembly])
      *2

      Front view of wire harness connector

      (to Back Door Glass)

      Disconnect the H81 ECU connector.

    2. Disconnect the S9 glass connector.

    3. Disconnect the S2 defogger connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H81-8 (GBS) - S9-1 (SSR+) Always Below 1 Ω
      H81-8 (GBS) or S9-1 (SSR+) - Body ground Always 10 kΩ or higher
      S2-1 (E) - Body ground Always Below 1 Ω

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR