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Home >> Subaru >> 2013 >> BRZ Premium, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Occupant Detection System (Diagnostics)) >> Occupant Detection System >> DTC B1655: Front Buckle Switch RH Failure >> Inspection steps

Inspection steps

WARNING: This page is about a different car, the 2018 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. Inspection of the buckle switch
    1. Turn the ignition switch to OFF, disconnect the battery ground terminal, and wait for 60 seconds or more.
    2. Disconnect the buckle switch connector.
    3. Connect the test harness AE and the test harness connector Y to the buckle switch connector (e1).
    4. Connect the battery ground terminal and turn the ignition switch to ON.

    Criteria: The airbag warning light illuminates for 6 seconds, then it goes off.

    NG: Check the seat harness, and if any fault is found, repair the harness. In the case that the fault cannot be corrected, replace the front seat ASSY RH.

    OK: Go to next step

    Replace the front seat inner belt ASSY RH (seat belt buckle switch RH).