DTC P3107-213: Airbag ECU Communication Circuit Malfunction: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Body Electrical / SRS Airbag / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   Airbag system DTCs are not output.	A
   Airbag system DTCs are output.	B

5. Turn the ignition switch off.

B → See step   10 

A: Go to next step 

1. Turn the ignition switch to ON (READY).
2. Connect an oscilloscope between the center airbag sensor assembly terminals specified in the table below, and measure the waveform.
   Fig 1: Checking Center Airbag Sensor Assembly With Waveform Reference

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Contents
   Terminal	D30-14 (GSW2) - D30-25 (E1)
   Equipment Setting	5 V/DIV., 500 ms/DIV.
   Condition	Ignition switch ON (READY)

   Result

   Result	Proceed to
   The waveform appears as shown in the illustration.	A
   The waveform differs from the one shown in the illustration.	B

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Center Airbag Sensor Assembly)

3. Turn the ignition switch off.

B → See step   6 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Read and record the DTCs and freeze frame data.
5. Clear DTCs and freeze frame data.
6. Turn the ignition switch off.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result		Proceed to
   DTC P3107-213 is not output.		A
   DTC P3107-213 is output.		B

5. Turn the ignition switch off.

B → See step   8 

A: Go to next step 

1. Check for intermittent problems. Refer to CHECK FOR INTERMITTENT PROBLEMS .

NG → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

OK → See step   8 

1. Disconnect the D30 connector from the center airbag sensor assembly.
2. Measure the resistance according to the value(s) in the table below.
   Fig 2: Checking Center Airbag Sensor Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   D30-14 (GSW2) - D30-25 (E1)	Ignition switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Center Airbag Sensor Assembly)

3. Connect the center airbag sensor assembly connector.

NG → See step   9 

OK: Go to next step 

1. Disconnect the D30 connector from the center airbag sensor assembly.
2. Disconnect the D72 connector from the hybrid vehicle control ECU.
   Fig 3: Checking Harness And Connector (Hybrid Vehicle Control ECU - Center Airbag Sensor Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU)
   *b	Rear view of wire harness connector (to Center Airbag Sensor Assembly)

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   D72-29 (ABFS) or D30-14 (GSW2) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

4. Connect the center airbag sensor assembly connector.
5. Connect the hybrid vehicle control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   8