DESCRIPTION
When the glass breakage sensor detects the glass is broken (1st time), the sensor
will set off an alarm for 20 seconds (pre-alarm). If the glass breakage sensor detects
that more glass is broken (2nd time or more), the sensor will set off an alarm for
60 seconds.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
procedure.
PROCEDURE
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1.
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READ VALUE USING TECHSTREAM (Glass Break Sensor Detection)
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(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
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Tester Display
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Measurement Item/Range
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Normal Condition
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Diagnostic Note
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Glass Break Sensor Detection
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Glass breakage sensor detection /
ON or OFF
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ON: Glass breakage sensor ON
OFF: Glass breakage sensor OFF
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-
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OK:
When tapping on the door glass with your finger, "ON" is displayed on the Techstream
screen.
| OK |
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PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
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| NG |
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2.
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CHECK HARNESS AND CONNECTOR (GLASS BREAKAGE SENSOR ECU - BATTERY AND
BODY GROUND)
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(a) Disconnect the glass breakage sensor ECU connector.
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*a
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Front view of wire harness connector
(to Glass Breakage Sensor ECU)
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(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
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Tester Connection
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Condition
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Specified Condition
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J57-2 (GB+B) - J57-6 (GND)
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Always
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11 to 14 V
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J57-3 (GBIG) - J57-6 (GND)
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Ignition switch ON
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11 to 14 V
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Ignition switch off
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Below 1 V
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(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
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Tester Connection
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Condition
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Specified Condition
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J57-6 (GND) - Body ground
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Always
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Below 1 Ω
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| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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| OK |
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3.
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CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
- GLASS BREAKAGE SENSOR ECU)
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(a) Disconnect the J165 main body ECU (multiplex network body ECU) connector.
(b) Disconnect the J57 glass breakage sensor ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
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Tester Connection
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Condition
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Specified Condition
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J165-7 (GBS) - J57-5 (GBSI)
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Always
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Below 1 Ω
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J165-7 (GBS) or J57-5 (GBSI) - Other terminals and body ground
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Always
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10 kΩ or higher
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| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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| OK |
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4.
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CHECK HARNESS AND CONNECTOR (GLASS BREAKAGE SENSOR ECU - GLASS BREAKAGE
SENSOR MICROPHONE)
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(a) Disconnect the J57 glass breakage sensor ECU connector.
(b) Disconnect the J58 glass breakage sensor microphone connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
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Tester Connection
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Condition
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Specified Condition
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J57-8 (MI+) - J58-3 (MIC+)
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Always
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Below 1 Ω
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J57-7 (MI-) - J58-4 (MIC-)
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J57-8 (MI+) or J58-3 (MIC+)- Other terminals and body ground
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Always
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10 kΩ or higher
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| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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| OK |
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5.
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CHECK GLASS BREAKAGE SENSOR ECU (GLASS BREAKAGE SENSOR OUTPUT)
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(a) Turn the ignition switch to ON.
(b) Using an oscilloscope, check the waveform.
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*a
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Component with harness connected
(Glass Breakage Sensor ECU)
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*b
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Waveform
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Standard:
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Test Connector
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Tool Setting
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Vehicle Condition
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Specified Condition
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J57-5 (GBSI) - Body ground
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1 V/DIV., 50 msec./DIV.
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Ignition switch ON.
Tap the door glass with a hard object such as your fingernail.
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Pulse generation
(Waveform)
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| OK |
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REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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| NG |
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6.
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REPLACE GLASS BREAKAGE SENSOR MICROPHONE
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(a) Temporarily replace the glass breakage sensor microphone with a new or normally
functioning one.
- for Column Shift Type:
Click here 
- for Floor Shift Type:
Click here
| NEXT |
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7.
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CHECK GLASS BREAKAGE SENSOR ECU (GLASS BREAKAGE SENSOR OUTPUT)
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(a) Turn the ignition switch to ON.
(b) Using an oscilloscope, check the waveform.
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*a
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Component with harness connected
(Glass Breakage Sensor ECU)
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*b
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Waveform
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Standard:
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Test Connector
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Tool Setting
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Vehicle Condition
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Specified Condition
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J57-5 (GBSI) - Body ground
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1 V/DIV., 50 msec./DIV.
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Ignition switch ON.
Tap the door glass with a hard object such as your fingernail.
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Pulse generation
(Waveform)
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| OK |
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END (GLASS BREAKAGE SENSOR MICROPHONE WAS DEFECTIVE)
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| NG |
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REPLACE GLASS BREAKAGE SENSOR ECU
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