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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 382 (SRS Airbag) >> Removal And Installation >> Occupant Classification System >> Removal and Installation >> Occupant Classification System Sensors

Occupant Classification System Sensors

WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury.
  • Before servicing SRS, turn ignition switch OFF, disconnect both battery terminals then wait at least 3 minutes.
CAUTION:
  • When working with the metal seat frame, use caution to avoid injury from sharp edges.
  • When removing or installing the seat trim, handle it carefully to keep dirt out and to avoid damage.
  • When removing or installing the seat, use shop cloths to protect components from damage.
  • When disconnecting or connecting the harness and harness connectors, handle them carefully to avoid damage.

Removal 

  1. Remove both front slide finishers (LH/RH) from the front passenger seat using the following procedure.
    GNSAWHIA0774Z-774Courtesy of NISSAN NORTH AMERICA, INC.
    1. Slide the front passenger seat to the full rearward position.
    2. Lift the front of the front slide finisher (LH/RH) up and then pull finisher away from the seat as shown.
  2. Remove both rear slide finishers (LH/RH) (1) from the front passenger seat using the following procedure.
    GNSALHIA0524Z-524Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: RH shown, LH similar.
    1. Slide the front passenger seat to the full forward position.
    2. Release the rear slide finisher (LH/RH) pawls from the seat track.

      SYMBOL

      : Pawl
    3. Pull the rear slide finisher (LH/RH) (1) away from the seat as shown.
  3. Position the front passenger seat using the following procedure.
    NOTE: Positioning the front passenger seat will allow:
    • access to all four seat bolts.
    • the seat to be tilted outward in front of the center pillar.
    • access to the occupant classification system sensors.
    1. Move the seatback to the full upright position.
    2. Slide the seat so the seatback is about 25 mm (1 in) forward of the center pillar (1).
      GNSALHIA0525Z-525Courtesy of NISSAN NORTH AMERICA, INC.
    3. Move the seat cushion to the full up position as shown.
  4. Remove the four seat bolts.
  5. Disconnect the seat harness from the front passenger seat using the following procedure.
    1. Tilt the front of the front passenger seat rearward to access the seat harness.
    2. Release the harness clips (A) from the seat frame assembly (1).
      GNSALHIA0559Z-559Courtesy of NISSAN NORTH AMERICA, INC.
    3. Disconnect the harness connectors (B).
  6. Remove the front passenger seat from the vehicle.
    CAUTION: Do not damage the front door finisher or other interior finishers during seat removal.
  7. Remove the seat cushion outer finisher (RH) (1) using the following procedure.
    GNSALHIA0527Z-527Courtesy of NISSAN NORTH AMERICA, INC.
    1. Remove the screw (A).
    2. Release the metal clips using a suitable tool.

      SYMBOL

      : Metal clip
    3. Disconnect the harness connector from the power seat switch.
  8. From under the seat, release the seatback board J-clips (A).
    GNSALHIA0528Z-528Courtesy of NISSAN NORTH AMERICA, INC.
  9. For models with climate controlled passenger seat, perform the following procedure.
    1. Remove the lower rear cover (1) using the following steps.
      GNSALHIA0529Z-529Courtesy of NISSAN NORTH AMERICA, INC.
      1. Remove the screws (A).
      2. Lift the lower rear cover (1) from the back of the seat to release the lower rear cover hooks.
        CAUTION: Do not damage lower rear cover hooks.
      3. Release the harness clip from the lower rear cover (1).

        SYMBOL

        : Clip
    2. Disconnect the upper blower duct (1) at the point shown below.
      GNSALHIA0530Z-530Courtesy of NISSAN NORTH AMERICA, INC.
    3. Position the blower motor bracket aside using the following steps.
      1. Release the harness clips to position the harness (1) aside and remove the screws (A).
        GNSALHIA0531Z-531Courtesy of NISSAN NORTH AMERICA, INC.
        CAUTION: Do not damage harness.
      2. Remove the screws (B).
  10. Remove the seat cushion assembly from the seat frame assembly using the following procedure.
    1. Release the seat cushion J-hooks (A) from the seat frame assembly.
      GNSALHIA0532Z-532Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: J-hooks (A) are located under the blower motor bracket (1) (if equipped).
    2. Remove the slide finisher outer (LH) (1) using the following steps.
      GNSALHIA0533Z-533Courtesy of NISSAN NORTH AMERICA, INC.
      1. Remove the screws (A).
      2. Move the slide finisher outer (LH) (1) rearward as shown.
    3. Release the cloth strap (1).
      GNSALHIA0534Z-534Courtesy of NISSAN NORTH AMERICA, INC.
    4. Release the seat cushion J-clips (LH/RH) (A) from the sides of seat frame assembly using suitable tool (B).
      GNSALHIA0535Z-535Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: LH shown, RH similar.
    5. Release the seat cushion J-clip (A) from the front of seat frame assembly (1).
      GNSDB115657Courtesy of NISSAN NORTH AMERICA, INC.
    6. Position the seat cushion trim and pad aside.
      CAUTION: Do not damage the seat heater harness (if equipped).
      NOTE: Do not disconnect the seat heater harness connector (if equipped).
  11. Install the front passenger seat using the following procedure.
    1. Place the front passenger seat in the vehicle.
      CAUTION: Do not damage the front door finisher or other interior finishers during seat installation.
    2. Install and tighten the front passenger seat bolts to specification in the order shown below.
      GNSALJIA0789Z-789Courtesy of NISSAN NORTH AMERICA, INC.

      Front passenger seat bolts

      : 48 N.m (4.9 kg-m, 35 ft-lb)
  12. Remove the seat frame assembly from the seat tracks (LH/RH) using the following procedure.
    1. Remove the nuts (A) from LH side of the seat frame assembly.
      GNSALHIA0539Z-539Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION:
      • Do not move the seat track while nuts (A) are removed.
      • Do not reuse nuts (A).
    2. Remove the nuts (A) from RH side of the seat frame assembly.
      GNSALHIA0540Z-540Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION:
      • Do not move the seat track while nuts (A) are removed.
      • Do not reuse nuts (A).
  13. Remove the front occupant classification system sensor using the following procedure.
    1. Tilt the front passenger seat towards the front passenger door opening as shown below.
      GNSALHIA0541Z-541Courtesy of NISSAN NORTH AMERICA, INC.
    2. Disconnect the front occupant classification system sensor harness connector (A).
      GNSDB118840Courtesy of NISSAN NORTH AMERICA, INC.
    3. Remove the nuts (B) from the front occupant classification system sensor (1).
      CAUTION: Do not reuse nuts (B).
    4. Remove the front occupant classification system sensor (1).
  14. Remove the rear occupant classification system sensor using the following procedure.
    1. Tilt the front passenger seat towards the front passenger door opening as shown below.
      GNSALHIA0543Z-543Courtesy of NISSAN NORTH AMERICA, INC.
    2. Disconnect the rear occupant classification system sensor harness connector (A).
      GNSALHIA0544Z-544Courtesy of NISSAN NORTH AMERICA, INC.
    3. Remove the nuts (B) from the rear occupant classification system sensor (1).
      CAUTION: Do not reuse nuts (B).
    4. Remove the rear occupant classification system sensor (1).

Installation 

WARNING:
  • After installation is complete, perform additional services (Zero point reset) when installing occupant classification system sensors. Refer to Special Repair Requirement .
  • Zero point reset must be performed every time the front passenger seat is removed.
  • Zero point reset is done after the front passenger seat is installed in vehicle and all nuts and bolts are tightened to specification.
CAUTION:
  • After installation is complete, check that no system malfunction is detected causing the air bag warning lamp to illuminate.
  • If a malfunction is indicated by the air bag warning lamp after repair or replacement of the malfunctioning parts, perform the SRS final check. Refer to SRS Final Check .
  1. Install the rear occupant classification system sensor using the following procedure.
    1. Tilt the front passenger seat towards the front passenger door opening as shown and install the rear occupant classification system sensor.
      GNSALHIA0543Z-543Courtesy of NISSAN NORTH AMERICA, INC.
    2. Install the nuts (B) to the rear occupant classification system sensor (1) and tighten to specification.
      GNSALHIA0544Z-544Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not reuse nuts (B).

      Occupant classification system sensor nuts (B)

      : 22 N.m (2.2 kg-m, 16 ft-lb)
    3. Connect the rear occupant classification system sensor harness connector (A).
  2. Install the front occupant classification system sensor using the following procedure.
    1. Tilt the front passenger seat towards the front passenger door opening as shown and install the front occupant classification system sensor.
      GNSALHIA0541Z-541Courtesy of NISSAN NORTH AMERICA, INC.
    2. Install the nuts (B) to the front occupant classification system sensor (1) and tighten to specification.
      GNSDB118840Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not reuse nuts (B).

      Occupant classification system sensor nuts (B)

      : 22 N.m (2.2 kg-m, 16 ft-lb)
    3. Connect the front occupant classification system sensor harness connector (A).
  3. Install the front passenger seat frame assembly using the following procedure.
    1. Install the seat frame assembly onto the four studs.
      CAUTION: Make sure the seat frame assembly is installed correctly on all four studs.
    2. Install nuts to the RH side of the seat frame assembly and tighten to specification in the order shown below.
      GNSALHIA0545Z-545Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not reuse nuts.

      Seat frame assembly nuts

      : 45 N.m (4.6 kg-m, 33 ft-lb)
    3. Install the nuts to the LH side of the seat frame assembly and tighten to specification in the order shown below.
      GNSALHIA0577Z-577Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not reuse nuts.

      Seat frame assembly nuts

      : 45 N.m (4.6 kg-m, 33 ft-lb)
  4. Remove the four seat bolts and the front passenger seat from the vehicle.
    CAUTION: Do not damage the front door finisher or other interior finishers during seat removal.
  5. Install the seat cushion assembly to the seat frame assembly using the following procedure.
    1. Install the seat cushion trim and pad.
      NOTE: Make sure the hole in the seat cushion pad aligns with the thermal electric device nozzle (1) (if equipped).
      GNSALHIA0547Z-547Courtesy of NISSAN NORTH AMERICA, INC.
    2. Attach the seat cushion J-clips (LH/RH) (A) to the sides of the seat frame assembly using a suitable tool (B).
      GNSALHIA0548Z-548Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: LH shown, RH similar.
    3. Attach the seat cushion J-clip (A) to the front of the seat frame assembly (1).
      GNSDB115657Courtesy of NISSAN NORTH AMERICA, INC.
    4. Install the slide finisher outer (LH) (1) using screws (A).
      GNSAWHIA0773Z-773Courtesy of NISSAN NORTH AMERICA, INC.
    5. Attach seat cushion J-hooks (A) to the seat frame assembly.
      GNSALHIA0532Z-532Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: J-hooks (A) are located under the blower motor bracket (1) (if equipped).
    6. Attach the cloth strap (1).
      GNSALHIA0534Z-534Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: The cloth strap secures the seat harness between seat cushion and seatback.
  6. For models with climate control passenger seat, perform the following procedure.
    1. Install the blower motor bracket using the following steps.
      1. Install the blower motor bracket.
      2. Position the harness (1) aside and install the screws (A).
        GNSALHIA0531Z-531Courtesy of NISSAN NORTH AMERICA, INC.
      3. Install the screws (B).
      4. Attach the harness clips to the blower motor bracket.
      NOTE: Make sure the thermal electric device nozzle is positioned in the seat cushion pad correctly.
    2. Connect the upper blower duct (1) at the point shown below.
      GNSALHIA0530Z-530Courtesy of NISSAN NORTH AMERICA, INC.
    3. Install the lower rear cover (1) using the following steps.
      GNSALHIA0529Z-529Courtesy of NISSAN NORTH AMERICA, INC.
      1. Attach the harness clip to the lower rear cover (1).

        SYMBOL

        : Clip
      2. Attach the lower rear cover hooks to the seat frame assembly.
        CAUTION: Do not damage lower rear cover hooks.
      3. Install the screws (A).
  7. From under the seat, attach the seatback board J-clips (A).
    GNSALHIA0528Z-528Courtesy of NISSAN NORTH AMERICA, INC.
  8. Install the seat cushion outer finisher (RH) (1) using the following procedure.
    GNSALHIA0527Z-527Courtesy of NISSAN NORTH AMERICA, INC.
    1. Connect the harness connector to the power seat switch.
    2. Attach the metal clips to seat frame assembly.

      SYMBOL

      : Metal clip
    3. Install the screw (A).
  9. Install front passenger seat using the following procedure.
    1. Place the front passenger seat in the vehicle.
      CAUTION: Do not damage the front door finisher or other interior finishers during seat installation.
    2. Tilt the front passenger seat rearward to access the seat harness.
      GNSALHIA0559Z-559Courtesy of NISSAN NORTH AMERICA, INC.
    3. Attach the harness clips (A) to the seat frame assembly (1).
    4. Connect the harness connectors (B).
    5. Install and tighten the front passenger seat bolts to specification in the order shown below.
      GNSALJIA0789Z-789Courtesy of NISSAN NORTH AMERICA, INC.

      Front passenger seat bolts

      : 48 N.m (4.9 kg-m, 35 ft-lb)
  10. Connect both battery terminals.
    CAUTION: Connect positive battery terminal first.
  11. Slide the front passenger seat to the full rearward position and install the front slide finishers (LH/RH).
  12. Slide the front passenger seat to the full forward position and install the rear slide finishers (LH/RH).
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