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Home >> Nissan-Datsun >> 2011 >> Cube Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> SRS Airbag Control System >> DTC/Circuit Diagnosis >> DTC B1022: Occupant System Control Unit >> Diagnosis Procedure >> Diagnostic Procedure

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 OCCUPANT DETECTION SYSTEM CONTROL UNIT
    1. Replace occupant detection system control 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. REPLACE OCCUPANT DETECTION SYSTEM SEAT SENSOR
    1. Replace passenger seat cushion assembly. Refer to "EXPLODED VIEW ".
    2. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".

      Is DTC detected? 

      YES: GO TO 5.

      NO: INSPECTION END

  5. 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  1.

      NO: INSPECTION END