HYBRID CONTROL SYSTEM, Diagnostic DTC:P3107-214

DTC Code DTC Name
P3107-214 Airbag ECU Communication Circuit Malfunction

DESCRIPTION

Refer to the description for DTC P3107-213 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P3107 214 Open or short to +B in the communication circuit

  • Wire harness or connector

  • Airbag ECU assembly

  • Hybrid vehicle control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P3107-213 Click here.

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC OUTPUT (AIRBAG)


    1. Connect the intelligent tester 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. B

    B

    GO TO DTC CHART Click here

    A

  2. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)


    1. A01GYH3E05

      Connect an oscilloscope between the airbag ECU assembly terminals specified in the table below, and measure the waveform.

      Item Contents
      Terminal L73-14 (GSW2) - L73-25 (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 illustration. A
      The waveform differs from the one shown in the illustration. B

    B

    CHECK CONNECTOR CONNECTION CONDITION Click here

    A

  3. CLEAR DTC (HV)


    1. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    2. Read and record the DTCs and freeze frame data.

    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    4. Clear DTCs and freeze frame data.


    NEXT

  4. CHECK DTC OUTPUT (HV)


    1. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    2. Check if DTCs are output.

      Result
      Result Proceed to
      P3107-214 is not output. A
      P3107-214 is output again. B

    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    A

  5. CHECK FOR INTERMITTENT PROBLEMS


    1. Check for intermittent problems Click here.


    YES

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    NO

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

  6. CHECK CONNECTOR CONNECTION CONDITION


    1. A01GZ7LE01

      Check the connections of the hybrid vehicle control ECU and airbag ECU assembly connectors.

      OK
      The connectors are connected securely and there are no contact problems.

    NG

    CONNECT SECURELY

    OK

  7. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - AIRBAG ECU ASSEMBLY)


    1. Turn the power switch off.

    2. A01GXHME03

      Disconnect connector A78 from the hybrid vehicle control ECU.

    3. Disconnect connector L73 from the airbag ECU assembly.

    4. Turn the power switch on (IG).

    5. Measure the voltage according to the value(s) in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A78-31 (ABFS) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU and airbag ECU assembly connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    6. Turn the power switch off.

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

      Standard resistance (Check for open)
      Tester Connection Switch Condition Specified Condition
      A78-31 (ABFS) - L73-14 (GSW2) Power switch off Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Switch Condition Specified Condition
      A78-31 (ABFS) or L73-14 (GSW2) - Body ground and other terminals Power switch off 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HYBRID VEHICLE CONTROL ECU


    1. A01GXB3E01

      Turn the power switch off.

    2. Connect the hybrid vehicle control ECU connector.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      L73-14 (GSW2) - Body ground Power switch on (IG) 11 to 14 V

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

    REPLACE AIRBAG ECU ASSEMBLY Click here