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.
2016 Infiniti QX50 AWDFACTORY OEM SERVICE PROCEDURE
Engine Control System (Introduction)
- Basic Inspection
- Diagnosis And Repair Workflow
- Inspection And Adjustment
- Basic Inspection
- Additional Service When Replacing Control Unit (ECM)
- Additional Service When Replacing Control Unit (VVEL Control Module)
- Idle Speed
- Ignition Timing
- VIN Registration
- Accelerator Pedal Released Position Learning
- Throttle Valve Closed Position Learning
- Idle Air Volume Learning
- VVEL Control Shaft Position Sensor Adjustment
- Mixture Ratio Self-Learning Value Clear
- How To Set SRT Code
- How To Erase Permanent DTC
- System Description
- Engine Control System
- MULTIPORT Fuel Injection System
- Electric Ignition System
- Air Conditioning Cut Control
- Automatic Speed Control Device (ASCD)
- Can Communication
- Cooling Fan Control
- Evaporative Emission System
- Fuel Filler Cap Warning System
- Intake Valve Timing Control
- VVEL System
- On Board Diagnostic (OBD) System
- Diagnosis System (ECM)
- Diagnosis Description
- 1ST Trip Detection Logic And Two Trip Detection Logic
- DTC And Freeze Frame Data
- Counter System
- Relationship Between Mil, 1ST Trip DTC, DTC, And Detectable Items
- Counter System Chart
- Relationship Between Mil, DTC, 1ST Trip DTC And Driving Patterns For "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"
- Explanation For Driving Patterns For "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"
- Relationship Between Mil, DTC, 1ST Trip DTC And Driving Patterns Except For "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"
- Explanation For Driving Patterns Except For "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"
- Driving Pattern
- System Readiness Test (SRT) Code
- Malfunction Indicator Lamp (Mil)
- On Board Diagnosis Function
- Consult Function
- Diagnosis Description
Factory Service Tools
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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.
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