Toyota
Nissan Versa
 Sedan Service Manual
Restraints » SRS Airbag (SR) » Collision diagnosis
For Frontal Collision

FOR FRONTAL COLLISION: When SRS is activated in a collision

CAUTION: Due to varying models and option levels, not all parts listed in the chart below apply to all vehicles.

WORK PROCEDURE

  1. Before performing any of the following steps, ensure that all vehicle body and structural repairs have been completed.
  2. Replace the diagnosis sensor unit.
  3. Remove the front air bag modules, crash zone sensor assembly, bracket and seat belt pre-tensioner assemblies.
  4. Check the SRS components using the table below: Replace any SRS components showing visible signs of damage. (dents, cracks and deformation, etc.)
  5. Install new front air bag modules, crash zone sensor assembly, bracket and seat belt pre-tensioner assemblies.
  6. Perform self-diagnosis using CONSULT or air bag warning lamp. Refer to SRC "Trouble Diagnosis without CONSULT" for details.

    Ensure entire SRS operates properly.

  7. After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to SRC "SRS Operation Check".

SRS INSPECTION (FOR FRONTAL COLLISION)

Part Inspection
Driver air bag module If the driver air bag has deployed:

REPLACE

Install with new fasteners.
Front passenger air bag module (if equipped) If the front passenger air bag has deployed:

REPLACE

Install with new fasteners.
Crash zone sensor If any of the front air bags or seat belt pre-tensioners* have been activated:

REPLACE the crash zone sensor and bracket with new fasteners.

*: Confirm seat belt pre-tensioner activation using CONSULT only.
Seat belt pre-tensioner assemblies (All applicable locations: buckle, retractor, lap outer) If either the driver or passenger seat belt pre-tensioner* has been activated:

REPLACE all seat belt pre-tensioner assemblies with new fasteners.

*: Confirm seat belt pre-tensioner activation using CONSULT only.
Diagnosis sensor unit If any of the SRS components have been activated:

REPLACE the diagnosis sensor unit.

Install with new fasteners.
Steering wheel
  1. Visually check steering wheel for deformities.
  2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
  3. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
  4. Check steering wheel for excessive free play.
  5. If no damage is found, reinstall.
  6. If damaged - REPLACE.
Spiral cable If the driver front air bag has deployed:

REPLACE the spiral cable.
Occupant classification system (Passenger seat)
  1. Remove passenger seat assembly.
  2. Check control unit case for dents, cracks of deformities.
  3. Check connectors and pressure sensor tube for damage, and terminals for deformities.
  4. Check seat frame and cushion pan for dents or deformities.
  5. If no damage is found, reinstall seat with new fasteners.
  6. If damaged- REPLACE seat cushion assembly with new fasteners.
Harness and connectors
  1. Check connectors for poor connection, damage, and terminals for deformities.
  2. Check harness for binding, chafing, cuts, or deformities.
  3. If no damage is found, reinstall the harness and connectors.
  4. If damaged - REPLACE the damaged harness. Do not attempt to repair, splice or modify any SRS harness.
Instrument panel assembly If the passenger front air bag has deployed:

REPLACE the instrument panel assembly. (integrated type)

FOR FRONTAL COLLISION: When SRS is not activated in a collision

CAUTION: Due to varying models and option levels, not all parts listed in the chart below apply to all vehicles.

WORK PROCEDURE

  1. Before performing any of the following steps, ensure that all vehicle body and structural repairs have been completed.
  2. Check the SRS components using the table below: Replace any SRS components showing visible signs of damage. (dents, cracks and deformation, etc.)
  3. Perform self-diagnosis using CONSULT or air bag warning lamp. Refer to SRC "Trouble Diagnosis without CONSULT" for details.

    Ensure entire SRS operates properly.

  4. After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to SRC "SRS Operation Check".

SRS INSPECTION (FOR FRONTAL COLLISION)

Part Inspection
Driver air bag module If the driver air bag has NOT been activated:
  1. Remove driver air bag module. Check harness cover and connectors for damage, terminals for deformities, and harness for binding.
  2. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
  3. If no damage is found, reinstall with new fasteners.
  4. If damaged - REPLACE. Install driver air bag modules with new fasteners.
Front passenger air bag module (if equipped) If the front passenger air bag has NOT been activated:
  1. Remove front passenger air bag module. Check harness cover and connectors for damage, terminals for deformities, and harness for binding.
  2. Install front passenger air bag module into the instrument panel to check fit with the instrument panel.
  3. If no damage is found, reinstall with new fasteners.
  4. If damaged - REPLACE. Install front passenger air bag modules with new fasteners.
Crash zone sensor If the front air bags or seat belt pre-tensioners have NOT been activated:
  1. Remove the crash zone sensor. Check harness connectors for damage, terminals for deformities, and harness for binding.
  2. Check for visible signs of damage (dents, cracks, deformation) of the crash zone sensor and bracket.
  3. Install the crash zone sensor to check fit.
  4. If no damage is found, reinstall with new fasteners.
  5. If damaged - REPLACE the crash zone sensor and bracket with new fasteners.
Seat belt pre-tensioner assemblies (All applicable locations: buckle, retractor, lap outer) If the pre-tensioners have NOT been activated:
  1. Remove seat belt pre-tensioners.

    Check harness cover and connectors for damage, terminals for deformities, and harness for binding.

  2. Check belts for damage and anchors for loose mounting.
  3. Check retractor for smooth operation.
  4. Check seat belt adjuster for damage.
  5. Check for deformities of the center pillar inner.
  6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner assembly.
  7. If no damage is found, reinstall seat belt pre-tensioner assembly.
  8. If damaged -REPLACE. Install the seat belt pre-tensioners with new fasteners.
Diagnosis sensor unit If none of the SRS components have been activated:
  1. Check case for dents, cracks or deformities.
  2. Check connectors for damage, and terminals for deformities.
  3. If no damage is found, reinstall with new fasteners.
  4. If damaged - REPLACE. Install diagnosis sensor unit with new fasteners.
Steering wheel
  1. Visually check steering wheel for deformities.
  2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
  3. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
  4. Check steering wheel for excessive free play.
  5. If no damage is found, reinstall.
  6. If damaged - REPLACE.
Spiral cable If the driver front air bag has not deployed:
  1. Visually check spiral cable and combination switch for damage.
  2. Check connectors and protective tape for damage.
  3. Check steering wheel for noise, binding or heavy operation.
  4. If no damage is found, reinstall.
  5. If damaged - REPLACE.
Occupant classification system (Passenger seat)
  1. Remove passenger seat assembly.
  2. Check control unit case for dents, cracks of deformities.
  3. Check connectors and pressure sensor tube for damage, and terminals for deformities.
  4. Check seat frame and cushion pan for dents or deformities.
  5. If no damage is found, reinstall seat with new fasteners.
  6. If damaged - REPLACE seat cushion assembly with new fasteners.
Harness and connectors
  1. Check connectors for poor connection, damage, and terminals for deformities.
  2. Check harness for binding, chafing, cuts, or deformities.
  3. If no damage is found, reinstall the harness and connectors.
  4. If damaged --REPLACE the damaged harness. Do not attempt to repair, splice or modify any SRS harness.
Instrument panel assembly If the passenger front air bag has NOT deployed:
  1. Visually check instrument panel for damage.
  2. If no damage is found, reinstall the instrument panel assembly.
  3. If damaged-REPLACE the instrument panel assembly.
    More about «Collision diagnosis»:

    For Frontal Collision

    For Side and Rollover Collision

    Nissan Versa Sedan Service Manual / Restraints / SRS Airbag (SR) / Collision diagnosis / For Frontal Collision

    Nissan Versa Sedan Service Manual

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