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Home >> Infiniti >> 2014 >> QX50 Journey, RWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Introduction) >> DTC/Circuit Diagnosis >> Trouble Diagnosis - Specification Value >> Component Function Check
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Component Function Check

  1. PRECONDITIONING 

    Make sure that all of the following conditions are satisfied.

    TESTING CONDITION 

    • Vehicle driven distance: More than 5, 000 km (3, 107 miles)
    • Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm2 , 14.25 - 15.12 psi)
    • Atmospheric temperature: 20 - 30°C (68 - 86°F)
    • Engine coolant temperature: 75 - 95°C (167 - 203°F)
    • Transmission: Warmed-up
      • After the engine is warmed up to normal operating temperature, drive vehicle until "ATF TEMP 1" (A/T fluid temperature sensor signal) indicates more than 60°C (140°F).
    • Electrical load: Not applied
      • Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight ahead.
    • Engine speed: Idle

      : GO TO 2.

  2. PERFORM SPEC IN DATA MONITOR MODE 

    With CONSULT 

    NOTE: Perform "SPEC" in "DATA MONITOR" mode in maximum scale display.
    1. Perform "BASIC INSPECTION: SPECIAL REPAIR REQUIREMENT ".
    2. Select "B/FUEL SCHDL", "A/F ALPHA-B1", "A/F ALPHA-B2", "MAS A/F SE-B1" and "MAS A/F SE-B2" in "SPEC" of "DATA MONITOR" mode with CONSULT.
    3. Make sure that monitor items are within the SP value.

      Is the measurement value within the SP value? 

      YES: INSPECTION END

      NO: Go to "DIAGNOSIS PROCEDURE ".

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