Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSINFINITI2013QX56 RWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM - INTRODUCTIONDTC/CIRCUIT DIAGNOSISTROUBLE DIAGNOSIS - SPECIFICATION VALUECOMPONENT FUNCTION CHECK

2013 Infiniti QX56 RWD

Component Function Check

2013 Infiniti QX56 RWDSECTION Component Function Check

PRECONDITIONING
Check 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 (0.983 - 1.043 bar, 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 2" (A/T fluid temperature sensor signal) indicates more than 60°C (140°F).
- Electrical load: Not applied
  - Rear window defogger switch, air conditioner switch and lighting switch are OFF. Steering wheel is straight ahead.
- Engine speed: Idle
- Gear position: Neutral (or parking)
  GO TO 2.
PERFORM SPEC IN DATA MONITOR MODE
With CONSULT

NOTE: Perform "SPEC" in "DATA MONITOR" mode in maximum scale display.
1. Perform "WORK PROCEDURE ".
2. Select "B/FUEL SCHDL", "A/F ALPHA-B1", "A/F ALPHA-B2", "MAS A/F SE-B1" in "SPEC" of "DATA MONITOR" mode with CONSULT.
3. Check that monitor items are within the SP value.
  Is the measurement value within the SP value?
  
  YES: INSPECTION END
  
  NO: Proceed to "DIAGNOSIS PROCEDURE ".

RENDER: 1.0x

NO RELATED

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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.