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Inspection Steps

WARNING: This page is about a different car, the 2019 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Before performing the diagnosis, refer to Precautions .
  1. Check DTC
    1. Read the diagnostic codes in the occupant detection system Criteria: No other DTC is detected.

    NG: Perform diagnosis for the displayed DTC.

    OK: Go to next step

  2. Check poor contact of connectors.
    1. Check for poor contact of the connectors between the occupant detection control module and the airbag control module.

      Criteria: No fault is found.

    NG: Reconnect the connector. In the case that the fault cannot be corrected, replace the airbag rear harness along with the body harness, or replace the front seat cushion ASSY RH.

    OK: Go to next step

  3. Check airbag rear harness
    G12589874Courtesy of SUBARU OF AMERICA, INC.
    1. Turn the ignition switch to OFF, disconnect the battery ground terminal, and wait for 60 seconds or more.
    2. Disconnect the connector (Ge1) under the passenger's seat.
    3. Disconnect the connector (D27, G19, H32) from the airbag control module, and connect the connector (1AG) in the test harness AG.
    4. Measure the resistance between the terminals.
      NOTE: Connect the test harness AS to the connector (Ge1) and touch the test harness with the tester.
    STANDARD VALUE RESISTANCE SPECIFICATION

    Inspection terminals Inspection conditions Standard value
    (Ge1) No. 2 - (6AG) No. 9 Always Less than 10 Ω
    (Ge1) No. 3 - (6AG) No. 11 Always Less than 10 Ω

    Criteria: DTC B1650 is not displayed.

    NG: Replace the airbag rear harness along with the body harness.

    OK: Go to next step

  4. Check airbag rear harness
    1. Measure the resistance between the terminals.
    STANDARD VALUE RESISTANCE SPECIFICATION

    Inspection terminals Inspection conditions Standard value
    (6AG) No. 9 - chassis ground Always 1 MΩ or more
    (6AG) No. 11 - chassis ground Always 1 MΩ or more
    (6AG) No. 9 - (6AG) No. 11 Always 1 MΩ or more

    NG: Replace the airbag rear harness along with the body harness.

    OK: Go to next step

  5. Check occupant detection harness
    1. Turn the ignition switch to ON.
    2. Measure the voltage between the terminals.
    VOLTAGE SPECIFICATION

    Inspection terminals Inspection conditions Standard value
    (Ge1) No. 1 - chassis ground IG ON 10 V or more

    NG: Replace the front seat cushion ASSY RH

    OK: Go to next step

    Check the battery voltage and the fuses. If there is no fault, replace the airbag rear harness along with the body harness.

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