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Home >> Nissan-Datsun >> 2014 >> Sentra SL >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> SRS Airbag Control System >> DTC/Circuit Diagnosis >> DTC B00A0: Occupant Classification System Control Unit >> Diagnosis Procedure
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Diagnosis Procedure

  1. HARNESS CONNECTOR 

    Visually inspect all applicable harness connectors for the following:

    • Visible damage to connector or terminal
    • Loose terminal
    • Poor connection
      NOTE: All harness connectors should be inspected from the air bag diagnosis unit to the end component (including any in-line connectors)

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Perform the following repairs:

      • Visible damage: Replace the harness.
      • Loose terminal: Secure the terminal.
      • Poor connection: Secure the connection.
  2. CONFIRM DTC 
    1. Reconnect all harness connectors.
    2. Turn ignition switch ON.
    3. Check for DTC using CONSULT.

      Is DTC still current? 

      YES: GO TO 3.

      NO: Refer to "INTERMITTENT INCIDENT ".

  3. WIRING HARNESS 

    Check the wiring harness for visible damage

    NOTE: The entire wiring harness should be inspected from the air bag diagnosis sensor to the end component (including and in-line connectors).

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Replace the harness.

  4. CONFIRM DTC 
    1. Reconnect all harness connectors.
    2. Turn ignition switch ON.
    3. Check for DTC using CONSULT.

      Is DTC still current? 

      YES: GO TO 5.

      NO: Refer to "INTERMITTENT INCIDENT ".

  5. REPLACE OCS CONTROL UNIT AND SENSORS 
    1. Replace the OCS control unit and sensors. Refer to "REMOVAL AND INSTALLATION ".
    2. Turn ignition switch ON.
    3. Check for DTC using CONSULT.

      Is DTC still current? 

      YES: GO TO 6.

      NO: Clear DTC. Inspection End.

  6. AIR BAG DIAGNOSIS SENSOR UNIT 
    1. Replace the air bag diagnosis sensor unit. Refer to "REMOVAL AND INSTALLATION ".
    2. Turn ignition switch ON.
    3. Check for DTC using CONSULT.

      Is DTC still current? 

      YES: GO TO 7.

      NO: Clear DTC. Inspection End.

  7. RELATED HARNESS 

    Replace the related harness

    : END.



Recheck SRS after each corrective action.

  1. CHECK CURRENT DTC 

    Does CONSULT indicate B00A0? 

    YES or NO 

    YES: GO TO 2.

    NO: GO TO  5.

  2. HARNESS CONNECTOR 

    Is there any visible damage to the OCS sub-harness connector? 

    YES or NO 

    YES: Replace the harness.

    NO: GO TO 3.

  3. WIRING HARNESS 

    Is there any visible damage to the body or seat sub harness? 

    YES or NO 

    YES: Replace the harness.

    NO: GO TO 4.

  4. OCS CONTROL UNIT HARNESS CONNECTOR 

    Is the OCS control unit or body harness connector disconnected? 

    YES or NO 

    YES: Connect the harness. Clear the DTC.

    NO: GO TO 5.

  5. REPLACE RH FRONT SEAT CUSHION ASSEMBLY 

    Replace the RH front seat cushion assembly. Refer to "PASSENGER SIDE: EXPLODED VIEW ".

    : GO TO 6.

  6. AIR BAG DIAGNOSIS SENSOR UNIT 

    Replace the air bag diagnosis sensor unit. Refer to "REMOVAL AND INSTALLATION ".

    : END.