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

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
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 power switch off.

B → See step   10 

A: Go to next step 

1. Turn the power switch on (READY).
2. Connect an oscilloscope between the airbag sensor assembly terminals specified in the table below, and measure the waveform.
   Fig 1: Identifying F34 (E1 & GSW2 Terminals) & Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Contents
   Terminal	F34-14 (GSW2) - F34-25 (E1)
   Equipment Setting	5 V/DIV., 500 ms./DIV.
   Condition	Power switch on (READY)

   Result

   Result	Proceed to
   The waveform appears as shown in the illustrationFig 1.	A
   The waveform differs from the one shown in the illustrationFig 1.	B

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Airbag Sensor Assembly)

3. Turn the power switch off.

B → See step   6 

A: Go to next step 

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
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 power switch off.

B → See step   8 

A: Go to next step 

1. Check for intermittent problems. Refer toCHECK FOR INTERMITTENT PROBLEMS .

NG → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

OK → See step   8 

1. Disconnect connector F34 from the airbag sensor assembly.
2. Measure the resistance according to the value(s) in the table below.
   Fig 2: Identifying F34 From The Airbag Sensor Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   F34-14 (GSW2) - F34-25 (E1)	Power switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Airbag Sensor Assembly)

3. Connect the airbag sensor assembly.

NG → See step   9 

OK: Go to next step 

1. Disconnect connector A58 from the hybrid vehicle control ECU.
2. Disconnect connector F34 from the airbag sensor assembly.
3. Measure the resistance according to the value(s) in the table below.
   Fig 3: Checking Harness And Connector (Hybrid Vehicle Control ECU - Airbag Sensor Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A58-73 (ABFS) or F34-14 (GSW2) - Body ground and other terminals	Power switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Hybrid Vehicle Control ECU)
   *2	Rear view of wire harness connector (to Airbag Sensor Assembly)

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   8