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:

Steering wheel turning force is heavy or light
Description Steering wheel turning force is heavy or light. Diagnosis Procedure 1.PERFORM SELF-DIAGNOSIS With CONSULT Turn the ignition switch OFF to ON. Perform EPS self-diagnosis. Is any DTC detected? YES >> Check the DTC. Refer to STC-14, "DTC Index". NO & ...

Dtc/circuit diagnosis
Door mirror remote control switch (mirror switch/changeover switch) Component Inspection 1.Check mirror switch & changeover switch Turn ignition switch off. Disconnect door mirror remote control switch connector. Check door mirror remote control switch. Is the inspection result ...

S terminal circuit
Description The output voltage of the generator is controlled by the IC regulator at terminal “S” detecting the input voltage from battery. The “S” terminal circuit detects the battery voltage to adjust the generator output voltage with the IC voltage regulator. Diagn ...

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