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Home >> Kia >> 2006 >> Rio Base, Automatic >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Troubleshooting >> Diagnostic Trouble Codes (DTC) >> DTC B1448 Passenger Occupant Classification Sensor Defect; DTC B1449 Passenger Occupant Classification (OC) System Communication Error; DTC B1450 Passenger Occupant Classification (OC) System Wrong Id >> Inspection Procedure
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Inspection Procedure

  1. PREPARATION

    Refer to the DESCRIPTION in this test. (See PREPARATION OF INSPECTION  )

  2. CHECK POWER TO OC SENSOR
    1. Connect the battery negative cable to the battery.
    2. Turn the ignition switch to ON.
    3. Measure voltage between the terminal 1 of OC Sensor harness connector and chassis ground.

      specification (voltage): Battery voltage

      Fig 1: Measuring Voltage Between Terminal 1 Of OC Sensor Harness Connector And Chassis Ground
      G04863109Courtesy of KIA MOTORS AMERICA, INC.
    4. Is the measured voltage within specification?

      YES 

      • Check short to battery line.

      NO 

      • Repair or replace the wiring harness between the OC Sensor and ignition switch.
  3. CHECK SHORT TO BATTERY LINE
    1. Measure voltage between the terminal 2 of OC Sensor harness connector and chassis ground.

      specification (voltage): Approximately 0 V

      Fig 2: Measuring Voltage Between Terminal 2 Of OC Sensor Harness Connector And Chassis Ground
      G04863110Courtesy of KIA MOTORS AMERICA, INC.
    2. Is the measured voltage within specification?

      YES 

      • Check short to ground.

      NO 

      • Repair the short to battery line circuit on wiring harness between the OC Sensor and the SRSCM.
  4. CHECK SHORT TO GROUND
    1. Turn the ignition switch to LOCK.
    2. Disconnect the battery negative cable from the battery.
    3. Measure resistance between the terminal 2 of OC Sensor harness connector and chassis ground.
    4. Measure resistance between the terminal 2 and 3 of OC Sensor harness connector

      Specification (resistance): Infinite

      Fig 3: Measuring Resistance Between Terminal 2 And 3 Of OC Sensor Harness Connector
      G04863111Courtesy of KIA MOTORS AMERICA, INC.
    5. Is the measured resistance within specification?

      YES 

      • Check OC Sensor Circuit.

      NO 

      • Repair or replace the wiring harness between the OC Sensor and the SRSCM.
  5. CHECK OC SENSOR CIRCUIT
    1. Measure resistance between the terminal 2 of OC Sensor harness connector and the terminal 23 of the SRSCM harness connector (B).

      specification (resistance): below 1 Ω

      Fig 4: Measuring Resistance Between OC Sensor Harness Connector Terminals
      G04863112Courtesy of KIA MOTORS AMERICA, INC.
    2. Is the measured resistance within specification?

      YES 

      • Check OC Sensor.

      NO 

      • Repair or replace the wiring harness between the OC Sensor and the SRSCM.
  6. CHECK OC SENSOR
    1. Replace the OC Sensor with a new one.
    2. Install the DAB module and connect the DAB connector.
    3. Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
    4. Connect the SRSCM connector.
    5. Connect the battery negative cable to the battery.
    6. Connect the a Hi-Scan (Pro) the data link connector.
    7. Turn the ignition switch to ON and check the vehicle again.
    8. Does Hi-Scan (Pro) indicate any DTC related to OC Sensor?

      YES 

      • Go to next step.

      NO 

      • Replace the OC Sensor.
  7. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN

    (See CLEAR THE DTC AND CHECK THE VEHICLE AGAIN )