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.
2007 Nissan-Datsun Altima BaseFACTORY OEM SERVICE PROCEDURE
Engine Control System - Introduction (Qr25DE) (Except For CALIFORNIA)
- Basic Inspection
- Inspection And Adjustment
- Additional Service When Replacing Control Unit
- Idle Speed
- Ignition Timing
- VIN Registration
- Accelerator Pedal Released Position Learning
- Throttle Valve Closed Position Learning
- Idle Air Volume Learning
- Mixture Ratio Self-Learning Value Clear
- Fuel Pressure Release
- Fuel Pressure Check
- EVAP Leak Check
- Function Diagnosis
- MULTIPORT Fuel Injection System
- Electric Ignition System
- Air Conditioning Cut Control
- Automatic Speed Control Device (ASCD)
- Can Communication
- Cooling Fan Control
- Evaporative Emission System
- Intake Valve Timing Control
- On Board Diagnostic (OBD) System
- Diagnosis Description
- Introduction
- Two Trip Detection Logic
- DTC And Freeze Frame Data
- System Readiness Test (SRT) Code
- Malfunction Indicator Lamp (Mil)
- OBD System Operation Chart
- CONSULT-III Function
- Diagnosis Tool Function
- Diagnosis Description
- Component Diagnosis
- Power Supply And Ground Circuit
Factory Service Tools
Use the Manual With the Right Hardware
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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.