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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISELECTRICALGAUGESDRIVER INFORMATION SYSTEMCOMBINATION METERSENGINE SPEED SIGNAL INSPECTION
2006 Infiniti FX35 AWD

Engine Speed Signal Inspection

2006 Infiniti FX35 AWDSECTION Engine Speed Signal Inspection

Symptom: Tachometer indication is malfunction.

  1. CHECK COMBINATION METER INPUT SIGNAL 
    1. Connect CONSULT-II, and start engine.
    2. Select "METER A/C AMP" on CONSULT-II.
    3. Using "TACHO METER" on "DATA MONITOR", compare the value of "DATA MONITOR" with tachometer pointer of combination meter.

    OK or NG 

    OK : GO TO 2.

    NG : Replace combination meter.

    Fig 1: Identifying Combination Meter
    G04078451Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL 
    1. Select "ENGINE" on CONSULT-II.
    2. Using "ENG SPEED" on "DATA MONITOR", print out the CONSULT-II screen when the engine is idling.
    3. Select "METER A/C AMP" on CONSULT-II.
    4. Using "TACHO METER" on "DATA MONITOR", compare the value of "DATA MONITOR" of the idling speed with that of the "ENG SPEED".

    OK or NG 

    OK : Perform ECM self-diagnosis. Refer to "CONSULT-II FUNCTION (ENGINE) " (VQ35DE) or "CONSULT-II FUNCTION (ENGINE) " (VK45DE).

    NG : Replace unified meter and A/C amp. Refer to "REMOVAL AND INSTALLATION OF UNIFIED METER AND A/C AMP. ".

    Fig 2: Identifying Unified Meter And A/C Amp
    G04078452Courtesy of NISSAN MOTOR CO., U.S.A.
RENDER: 1.0x

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When to See a Mechanic

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

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