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 MANUALSNISSAN-DATSUN2004ALTIMA S, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONCOMPUTER RELEARN PROCEDURESINTRODUCTIONIDLE AIR VOLUME LEARNINGPREPARATION
2004 Nissan-Datsun Altima S, Automatic
Idle Air Volume Learning: Preparation
2004 Nissan-Datsun Altima S, AutomaticSECTION Preparation
Before performing idle air volume learning, ensure that all of the following conditions are satisfied. Learning will be cancelled if any of the following conditions are missed for even a moment:
- Battery Voltage - More than 12.9 volts (At idle).
- Engine Coolant Temperature - 158-212°F (70-100°C).
- PNP Switch - ON.
- Electric Load Switch - OFF (Air conditioner, headlamp, rear window defogger) on vehicles equipped with daytime light systems, set lighting switch to the 1st position to light only small lamps.
- Steering Wheel - Neutral (Straight-ahead position).
- Vehicle Speed - Stopped.
- Transmission - Warmed-up for A/T models with CONSULT-II, drive vehicle until "FLUID TEMP SE" in "DATA MONITOR" mode of A/T system indicates less than 0.9 volt. For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.
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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.