Basic Concept

2006 Infiniti FX35 AWDSECTION Basic Concept
  • Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle thoroughly.
  • It is also important to clarify customer complaints before inspection.

    First of all, reproduce symptom, and understand it fully.

    Ask customer about his/her complaints carefully. In some cases,

    it will be necessary to check symptom by driving vehicle with customer.

    Fig 1: Determining Correct Diagnosis Path
    G04082574Courtesy of NISSAN MOTOR CO., U.S.A.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.