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Home >> Toyota >> 2018 >> Prius Two Eco >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Nickel Metal Hydride) - Diagnostic Codes (6 Of 8) >> HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY) >> DTC P3107-64: Lost Communication with Airbag System Control Module Signal Plausibility Failure [11/2015 - 08/2019] >> Procedure

DTC P3107-64: Lost Communication with Airbag System Control Module Signal Plausibility Failure [11/2015 - 08/2019]: Procedure

  1. CHECK DTC OUTPUT (SRS AIRBAG) 
    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 for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result  Proceed to
      DTCs are not output A
      DTCs are output B
    5. Turn the power switch off.

    Result: 

    B 

    GO TO DTC CHART (AIRBAG SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 12/2018]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2018 - 08/2019] 

    Result: 

    A 

    See step  2

  2. CLEAR DTC 
    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. Clear the DTCs.

      Powertrain > Hybrid Control > Clear DTCs 

    5. Turn the power switch off and wait for 2 minutes or more.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK DTC OUTPUT (HYBRID CONTROL) 
    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 for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result  Proceed to
      P3107-64 is not output A
      P3107-64 is output B
    5. Turn the power switch off.

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  4

  4. CHECK FOR INTERMITTENT PROBLEMS 

    HINT: 

    Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2015 -]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [11/2015 - 12/2018]  , or refer to  REMOVAL [12/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

  5. CHECK AIRBAG ECU ASSEMBLY (CHECK WAVEFORM) 
    1. Connect an oscilloscope between the airbag ECU assembly terminals specified in the table below.
    2. Turn the power switch on (READY).
    3. Measure the waveform.
      GTY726579Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Airbag ECU Assembly)
      Item Contents
      Terminal F56-14 (GSW2) - F56-25 (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
    4. Turn the power switch off.

    Result: 

    A 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2015 - 12/2018]  , or refer to  REMOVAL [12/2018 - 08/2019] 

    Result: 

    B 

    See step  6

  6. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) 
    1. Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU connectors.

      HINT: 

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2015 -]

      GTY542745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

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

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT SECURELY 

    Result: 

    OK 

    See step  7

  7. CHECK CONNECTOR CONNECTION CONDITION (AIRBAG ECU ASSEMBLY CONNECTOR) 
    1. Check the connector connections and contact pressure of the relevant terminals for the F56 airbag ECU assembly connector.
      GTY723275Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Airbag ECU Assembly)

      HINT: 

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2015 -]

      OK

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

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT SECURELY 

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - AIRBAG ECU ASSEMBLY) 
    1. Disconnect the F3 hybrid vehicle control ECU connector.
    2. Disconnect the F56 airbag ECU assembly connector.
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      (F3)

      (F3)

      Tester Connection Condition Specified Condition
      F3-29 (ABFS) - Body ground Power switch on (IG) Below 1 V
      GTY690147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *b Rear view of wire harness connector
      (to Airbag ECU Assembly)
      NOTE:

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

    5. Turn the power switch off.
    6. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      (F3)

      (F56)

      (F3)

      (F56)

      Tester Connection Condition Specified Condition
      F3-29 (ABFS) - F56-14 (GSW2) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      (F3)

      (F56)

      (F3)

      (F56)

      Tester Connection Condition Specified Condition
      F3-29 (ABFS) or F56-14 (GSW2) - Body ground and other terminals Power switch off 10 kΩ or higher
    7. Reconnect the F56 airbag ECU assembly connector.
    8. Reconnect the F3 hybrid vehicle control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [11/2015 - 12/2018]  , or refer to  REMOVAL [12/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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