Glass Breakage Sensor Circuit [10/2014 - ]: Procedure

HINT: 

Performing the following procedure will change the theft deterrent system to "ALARM SOUNDING STATE" (Refer to SYSTEM DESCRIPTION [10/2014 - ] ).

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. According to the display on the Techstream, read the Data List.
6. Turn the power switch on (IG), then off.
7. Set the theft deterrent system to "ARMED STATE" (Refer to SYSTEM DESCRIPTION [10/2014 - ] ).
8. Check that the security indicator light changes from illuminated to blinking.
9. Tap on the glass breakage sensor microphone with your finger.
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Glass Break Sensor Detection	Glass breakage sensor detection/ON or OFF	ON: Glass breakage sensor detection OFF: Glass breakage sensor not detection	-

   OK

   The Techstream display changes to ON.

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] )

Result: 

NG 

See step  2

1. Remove the main body ECU (multiplex network body ECU) (Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

2. Disconnect the 3B instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3B-28 - MB-19 (GBS)	Always	Below 1 Ω

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

(Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] )

Result: 

OK 

See step  3

1. Disconnect the E23 glass breakage sensor ECU connector.
2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E23-2 (+B) - Body ground	Power switch off	11 to 14 V

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E23-6 (GND) - Body ground	Always	Below 1 Ω

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E23-5 (GBS SIG) - 3B-28	Always	Below 1 Ω
   E23-5 (GBS SIG) - Body ground	Always	10 kΩ or higher
   3B-28 - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Disconnect the E22 glass breakage sensor microphone connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E23-7 (MIC-) - E22-4 (MIC-)	Always	Below 1 Ω
   E23-7 (MIC-) - Body ground	Always	10 kΩ or higher
   E22-4 (MIC-) - Body ground	Always	10 kΩ or higher
   E23-8 (MIC+) - E22-3 (MIC+)	Always	Below 1 Ω
   E23-8 (MIC+) - Body ground	Always	10 kΩ or higher
   E22-3 (MIC+) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Replace the glass breakage sensor microphone (Refer to REMOVAL [10/2014 - ] ).

Result: 

NEXT 

See step  7

1. Check the operation of the glass breakage sensor (Refer to SYSTEM DESCRIPTION [10/2014 - ] ).

   OK

   When tapping on the glass breakage sensor microphone with your finger, the alarm function operates.

Result: 

OK 

END (GLASS BREAKAGE SENSOR MICROPHONE WAS DEFECTIVE) 

Result: 

NG 

See step  8

1. Replace the glass breakage sensor ECU (Refer to REMOVAL [10/2014 - ] ).

Result: 

NEXT 

See step  9

1. Check the operation of the glass breakage sensor (Refer to SYSTEM DESCRIPTION [10/2014 - ] ).

   OK

   When tapping on the glass breakage sensor microphone with your finger, the alarm function operates.

Result: 

OK 

END (GLASS BREAKAGE SENSOR ECU WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] )