Nissan Sentra manuals

Nissan Sentra Service Manual: Precautions in repairing high strength steel

High strength steel (HSS)

High strength steel is used for body panels in order to reduce vehicle weight.

Accordingly, precautions in repairing automotive bodies made of high strength steel are described below:

Tensile strength

Nissan/Infiniti designation

Major applicable parts

373 N/mm2 (38kg/mm2,54klb/sq in) SP130
  • Front side member assembly
  • Hoodledge assembly
  • Upper dash
  • Front pillar reinforcement assembly
  • Rear side member assembly
  • Other reinforcements

SP130 is the most commonly used HSS.

Read the following precautions when repairing HSS:

  1. Additional points to consider






  1. Precautions in spot welding HSS

This work should be performed under standard working conditions.

Always note the following when spot welding HSS:




Handling of ultra high strength steel plate parts


Handling of ultra high strength steel plate parts

PROHIBITION OF CUT AND CONNECTION

Do not cut and join the lower lock pillar reinforcement (center pillar reinforcement inside frame parts) because its material is high strength steel plate (ultra high strength steel plate).

The center pillar reinforcement must be replaced if this part is damaged.

Precaution for supplemental restraint system (SRS) "air bag" and "seat belt pre-tensioner"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the dri ...

Preparation
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Other materials:

Air conditioner system refrigerant and oil recommendations
The air conditioner system in your NISSAN vehicle must be charged with the refrigerant HFC-134a (R-134a) and NISSAN A/C system oil Type S or the exact equivalents. CAUTION The use of any other refrigerant or oil will cause severe damage to the air conditioning system and will require the repl ...

Optical sensor
Description The optical sensor measures ambient light and transmits the optical sensor signal to the bcm. Component function check 1.Check optical sensor signal by consult Consult Turn the ignition switch ON. Select opti sen of bcm (head lamp) data monitor item. Turn the lighting swit ...

Larger children
Children should remain in a forward-facing child restraint with a harness until they reach the maximum height or weight limit allowed by the child restraint manufacturer. Once a child outgrows the height or weight limit of the harness-equipped forward-facing child restraint, NISSAN recommends ...

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