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Glass Breakage Sensor Circuit





THEFT DETERRENT: THEFT DETERRENT SYSTEM: Glass Breakage Sensor Circuit
- Glass Breakage Sensor Circuit

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





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect Techstream (with CAN VIM) to the DLC3.

(b) Turn the ignition switch on (IG).

(c) Press Techstream main switch on.

(d) Select the item below in the Data List and then check that the indicator operates.

Main Body:





OK:

When tapping on the glass with your finger, "ON" is displayed on Techstream screen.

NG -- INSPECT GLASS BREAKAGE SENSOR ECU

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. INSPECT GLASS BREAKAGE SENSOR ECU

(a) Disconnect the D45 glass breakage sensor ECU connector.





(b) Check the voltage between the wire harness side connectors.

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK WIRE HARNESS (BODY ECU - GLASS BREAKAGE SENSOR ECU - OPTION CONNECTOR)

(a) Disconnect the D7 body ECU connector.





(b) Disconnect the D45 GBS ECU connector.

(c) Check the resistance between the wire harness side connectors.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK WIRE HARNESS (GLASS BREAKAGE SENSOR ECU - GLASS BREAKAGE SENSOR MICROPHONE)

(a) Disconnect the D45 GBS ECU connector.





(b) Disconnect the D17 GBS microphone connector.

(c) Check the resistance between the wire harness side connectors.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. INSPECT GLASS BREAKAGE SENSOR ECU (MICROPHONE OUTPUT)

(a) Reconnect the glass breakage sensor ECU, glass breakage sensor microphone and multiplex network body ECU connectors.





(b) Connect an oscilloscope to terminal D45-3 of the glass breakage sensor ECU and body ground.

(c) Turn the ignition switch on (IG).

(d) Check the signal waveform according to the condition(s) in the table below.









OK:

As shown in the illustration

NG -- REPLACE GLASS BREAKAGE SENSOR MICROPHONE

OK -- REPLACE GLASS BREAKAGE SENSOR ECU