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Home >> Infiniti >> 2013 >> M37 Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> SRS Airbag Control System >> DTC/Circuit Diagnosis >> DTC B1022: Occupant System Control Unit >> Diagnostic Procedure
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Diagnostic Procedure

  1. CHECK HARNESS CONNECTOR 

    Check the connection of harness connector.

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Replace harness connectors.

  2. CHECK WIRING HARNESS 

    Check the wiring harness externals.

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Replace wiring harness.

  3. REPLACE AIR BAG DIAGNOSIS SENSOR UNIT 
    1. Replace air bag diagnosis sensor unit. Refer to "REMOVAL AND INSTALLATION ".
    2. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".

      Is DTC detected? 

      YES: GO TO 4.

      NO: INSPECTION END

  4. CHECK OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT 
    1. Replace passenger seat cushion assembly. Refer to "REMOVAL AND INSTALLATION ".
    2. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".

      Is DTC detected? 

      YES: GO TO  1.

      NO: INSPECTION END