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

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: 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. (for TMC Made)	B
   Airbag system DTCs are output. (for TMMK Made)	C

B → See step   10 

C → See step   11 

A: Go to next step 

1. Connect an oscilloscope between the center airbag sensor assembly terminals specified in the table below, and measure the waveform.
   Fig 1: Identifying Center Airbag Sensor Assembly Terminal Identification & Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Contents
   Terminal	GSW2 (E30-14) - E1 (E30-25)
   Equipment Setting	5 V/DIV., 500 ms./DIV.
   Condition	Power switch on (READY)

   OK

   The waveform appears as shown in the illustration.

NG → See step   6 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Read and record the DTCs and freeze frame data.
4. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
5. Clear DTCs and freeze frame data.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   DTC P3107-213 is output.

YES → See step   8 

NO: 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. Turn the power switch off.
   Fig 2: Identifying E30 Center Airbag Sensor Assembly Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the E30 center airbag sensor assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   GSW2 (E30-14) - E1 (E30-25)	10 kΩ or more

   Result

   Result	Proceed to
   OK	A
   NG (for TMC Made)	B
   NG (for TMMK Made)	C

B → See step   9 

C → See step   12 

A: Go to next step 

1. Disconnect the A61 hybrid vehicle control ECU.
   Fig 3: Identifying A61 Hybrid Vehicle Control ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   GSW2 (E30-14) or E1 (E30-25) - Body ground	10 kΩ or more

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   8