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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 77 (Motor Generator Control System (AWD) - Diagnostic Codes (5 Of 5)) >> MOTOR GENERATOR CONTROL SYSTEM (for AWD) >> DTC P322F-15: Communication Error from Airbag to Generator Circuit Short to Battery or Open [12/2019 - 11/2023] >> Procedure

DTC P322F-15: Communication Error from Airbag to Generator Circuit Short to Battery or Open [12/2019 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC OUTPUT (SRS AIRBAG) 

    See step  1

    Result

    Result  Proceed to
    Airbag system DTCs are not output. A
    Airbag system DTCs are output. B

    Result: 

    B 

    GO TO DTC CHART (AIRBAG SYSTEM) 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023]

    Result: 

    A 

    See step  2

  2. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) 

    Refer to PROCEDURE - Step 3

    Result

    Result Proceed to
    OK A
    NG (The connector is not connected securely.) B
    NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    Result: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  3

  3. CHECK CONNECTOR CONNECTION CONDITION (AIRBAG SENSOR ASSEMBLY CONNECTOR) 

    See step  3

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    CONNECT SECURELY 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - BODY GROUND) 
    1. Disconnect the H58 airbag sensor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY854877Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H58-33 (E1) - Body ground Ignition switch off Below 1 Ω
    3. Reconnect the H58 airbag sensor assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - AIRBAG SENSOR ASSEMBLY) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the A55 inverter with converter assembly connector.
    3. Disconnect the H58 airbag sensor assembly connector.
    4. Connect the cable to the negative (-) auxiliary battery terminal.
    5. Turn the ignition switch to ON.
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A55-18 (ABFS) - Body ground Ignition switch ON Below 1 V
      GTY932435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Inverter with Converter Assembly)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)
      NOTE:

      Turning the ignition switch to ON with the airbag sensor assembly connector and the inverter with converter assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the ignition switch off.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Open)

      Tester Connection Condition Specified Condition
      A55-18 (ABFS) - H58-24 (GSW2) Ignition switch off Below 1 Ω

      Standard Resistance (Short)

      Tester Connection Condition Specified Condition
      A55-18 (ABFS) or H58-24 (GSW2) - Body ground and other terminals Ignition switch off 10 kΩ or higher
    9. Disconnect the cable from the negative (-) auxiliary battery terminal.
    10. Reconnect the H58 airbag sensor assembly connector.
    11. Reconnect the A55 inverter with converter assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. REPLACE AIR BAG SENSOR ASSEMBLY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  7

  7. CLEAR DTC 

    See step  6

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CHECK DTC OUTPUT (MOTOR GENERATOR) 
    1. Check for DTCs.

      Powertrain > Motor Generator > Trouble Codes 

      Result

      Result  Proceed to
      P322F-15 is not output. A
      P322F-15 is output. B
    2. Turn the ignition switch off.

    Result: 

    A 

    COMPLETED 

    Result: 

    B 

    REPLACE INVERTER WITH CONVERTER ASSEMBLY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

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