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:

Diagnosis description : permanent diagnostic trouble code (permanent DTC)
Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A. ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as a permanent DTC until ECM judges that there is no presence of malfunction. Permanent DTCs cannot be erased by using the erase f ...

Component parts
Component parts location Combination meter Combination switch (lighting and turn signal switch) Key switch (without intelligent key system) Push-button ignition switch (with intelligent key system) Seat belt buckle switch lh Front door switch lh Bcm (view with instrument pane ...

Trunk lid trim
Exploded View Trunk lid finisher Front Removal and Installation REMOVAL Remove trunk lid finisher clips (A) and trunk lid finisher. INSTALLATION Installation is in the reverse order of removal. ...

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