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Home >> Toyota >> 2009 >> Matrix Base, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Theft Deterrent & Keyless Entry >> Theft Deterrent System >> Glass Breakage Sensor Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream main switch on.
    4. Select the item below in the Data List and then check that the indicator operates.

      Security 

      ITEM/RANGE REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Glass break sensor detection Glass breakage sensor detection / ON or OFF ON: Glass breakage sensor operates
      OFF: Glass breakage sensor does not operates      		 -

      OK: When tapping on the glass breakage sensor microphone with your finger, "ON" is displayed on the Techstream screen  .

      NG: Go to step   2 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 

  2. CHECK HARNESS AND CONNECTOR (GLASS BREAKAGE SENSOR ECU ASSEMBLY POWER SOURCE) 
    1. Disconnect the E70 glass breakage sensor ECU assembly connector.
    2. Measure the voltage according to the value (s) in the table below.

      Standard Voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      E70-2 (GB+B) - Body ground Always 11 to 14 V
      E70-3 (GBIG) - Body ground Ignition switch ON 11 to 14 V
      E70-3 (GBIG) - Body ground Ignition switch off Below 1 V
      Fig 1: Identifying E70 Glass Breakage Sensor ECU Assembly Connector Terminal
      G06036531Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (GLASS BREAKAGE SENSOR ECU ASSEMBLY BODY GROUND) 
    1. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      E70-6 (GND) - Body ground Always Below 1 Ω

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 2: Identifying Glass Breakage Sensor ECU Assembly Connector Terminal
      G06036532Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to Next Step 

  4. CHECK HARNESS AND CONNECTOR (THEFT WARNING ECU ASSEMBLY - GLASS BREAKAGE SENSOR ECU) 
    1. Disconnect the E72 theft warning ECU assembly connector.
      Fig 3: Identifying E72 Theft Warning ECU Assembly Connector Terminal
      G06036533Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      E72-3 (GBS) - E70-5 (GBSI) Always Below 1 Ω
      E72-3 (GBS) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (GLASS BREAKAGE SENSOR ECU - GLASS BREAKAGE SENSOR MICROPHONE) 
    1. Disconnect the E71 glass breakage sensor microphone connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      E70-7 (MI-) - E71-4 (MIC-) Always Below 1 Ω
      E70-8 (MI+) - E71-3 (MIC+) Always Below 1 Ω
      E70-7 (MI+) - Body ground Always 10 kΩ or higher
      E70-8 (MI-) - Body ground Always 10 kΩ or higher
      Fig 4: Identifying E71 Glass Breakage Sensor Microphone Connector Terminal
      G06036534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  6. INSPECT GLASS BREAKAGE SENSOR ECU ASSEMBLY (MICROPHONE OUTPUT) 
    1. Reconnect the E70 glass breakage sensor ECU assembly, E71 glass breakage sensor microphone and E72 theft warning ECU assembly connectors.
    2. Connect an oscilloscope to terminal 5 (GBSI) of the glass breakage sensor ECU assembly and body ground.
    3. Turn the ignition switch to ON.
      Fig 5: Identifying E70 Glass Breakage Sensor ECU Connector Terminal
      G06036535Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Check the signal waveform according to the condition (s) in the table below.
      ITEM CONDITION CHART

      Item Condition
      Tool setting 1 V/DIV, 50 ms/DIV
      Vehicle condition Tap the glass breakage sensor microphone with a hard object such as your fingernail.
      Fig 6: Identifying Signal Waveform
      G05005480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: As shown in the illustration 

      NG: Go to step   7 

      OK: REPLACE GLASS BREAKAGE SENSOR ECU ASSEMBLY (See  REMOVAL  ) 

  7. REPLACE GLASS BREAKAGE SENSOR MICROPHONE 
    1. Replace glass breakage sensor microphone.
  8. CHECK GLASS BREAKAGE SENSOR 
    1. Check the glass breakage sensor operation (See SYSTEM DESCRIPTION ).
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the Techstream main switch on.
    5. Select the item below in the Data List and then check that the indicator operates.

      Security 

      ITEM/RANGE REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Glass break sensor detection Glass breakage sensor detection / ON or OFF ON: Glass breakage sensor operates
      OFF: Glass breakage sensor does not operates      		 -

      OK: When tapping on the glass breakage sensor microphone with your finger, "ON" is displayed on the Techstream screen  .

      Result 

      RESULT REFERENCE

      Result Proceed to
      Glass breakage sensor operates OK
      Glass breakage sensor does not operate NG

      NG: Go to step   9 

      OK: END 

  9. REPLACE GLASS BREAKAGE SENSOR ECU ASSEMBLY 
    1. Replace glass breakage sensor ECU assembly (See REMOVAL ).
  10. CHECK GLASS BREAKAGE SENSOR 
    1. Check the glass breakage sensor operation (See SYSTEM DESCRIPTION ).
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the Techstream main switch on.
    5. Select the item below in the Data List and then check that the indicator operates.

      Security 

      ITEM/RANGE REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Glass break sensor detection Glass breakage sensor detection / ON or OFF ON: Glass breakage sensor operates
      OFF: Glass breakage sensor does not operates      		 -

      OK: When tapping on the glass breakage sensor microphone with your finger, "ON" is displayed on the Techstream screen  .

      Result 

      RESULT REFERENCE

      Result Proceed to
      Glass breakage sensor operates OK
      Glass breakage sensor does not operate NG

      NG: REPLACE THEFT WARNING ECU ASSEMBLY (See  THEFT WARNING ECU  ) 

      OK: END 

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