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Home >> Toyota >> 2018 >> Prius One >> 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 P3107-11: Lost Communication with Airbag System Control Module Circuit Short to Ground [08/2019 -] >> Procedure

DTC P3107-11: Lost Communication with Airbag System Control Module Circuit Short to Ground [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.

      Body Electrical > SRS Airbag > Trouble Codes 

    4. Check for DTCs.

      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 [08/2019 - 07/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [07/2020 -] 

    Result: 

    A 

    See step  2

  2. 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.
      GTY910653Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Airbag ECU Assembly)
      Item Contents
      Terminal F122-24 (GSW2) - F122-33 (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: 

    B 

    See step  6

    Result: 

    A 

    See step  3

  3. CLEAR DTC 

    HINT: 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  4

  4. 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
      P3107-11 is not output A
      P3107-11 is output B
    5. Turn the power switch off.

    Result: 

    B 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [08/2019 - 07/2020]  , or refer to  REMOVAL [07/2020 -] 

    Result: 

    A 

    See step  5

  5. CHECK FOR INTERMITTENT PROBLEMS 

    HINT: 

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

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [08/2019 - 07/2020]  , or refer to  REMOVAL [07/2020 -] 

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

  6. CHECK AIRBAG ECU ASSEMBLY 
    1. Disconnect the F122 airbag ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY844895Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Airbag ECU Assembly)

      Standard Resistance

      (F122)

      (F122)

      Tester Connection Condition Specified Condition
      F122-24 (GSW2) - F122-33 (E1) Power switch off 10 kΩ or higher
    3. Reconnect the F122 airbag ECU assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [08/2019 - 07/2020]  , or refer to  REMOVAL [07/2020 -] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - AIRBAG ECU ASSEMBLY) 
    1. Disconnect the F3 hybrid vehicle control ECU connector.
    2. Disconnect the F122 airbag ECU assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY845458Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *b Front view of wire harness connector
      (to Airbag ECU Assembly)

      Standard Resistance

      (F3, F122)

      (F3)

      (F122)

      Tester Connection Condition Specified Condition
      F3-29 (ABFS) or F122-24 (GSW2) - Body ground and other terminals Power switch off 10 kΩ or higher
    4. Reconnect the F122 airbag ECU assembly connector.
    5. Reconnect the F3 hybrid vehicle control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [08/2019 - 07/2020]  , or refer to  REMOVAL [07/2020 -] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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