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 LEARNINGPROCEDURE - WITHOUT CONSULT-II
2004 Nissan-Datsun Altima S, Automatic
Procedure - Without Consult-II
2004 Nissan-Datsun Altima S, AutomaticSECTION Procedure - Without Consult-II
NOTE:
It is better to count the time accurately with a clock. It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction.
- Perform accelerator pedal released position learning, see ACCELERATOR PEDAL RELEASED POSITION LEARNING .
- Perform throttle valve closed position learning, see THROTTLE VALVE CLOSED POSITION LEARNING .
- Start engine and warm to normal operating temperature.
- Check that all items listed under PREPARATION are in good order.
- Turn ignition switch OFF and wait at least 10 seconds.
- Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds. See Fig 1.
- Repeat the following procedure quickly five times within 5 seconds:
- Fully depress the accelerator pedal.
- Fully release the accelerator pedal.
- Wait 7 seconds, fully depress the accelerator pedal and keep it down for approximately 20 seconds until the MIL stops blinking and is turned ON.
- Fully release the accelerator pedal within 3 seconds after the MIL goes OFF.
- Start engine and let it idle.
- Wait 20 seconds.
- Rev up the engine 2 or 3 times and ensure that idle speed and ignition timing are within the specifications, see Fig 1.
- If idle speed and ignition timing are not within the specification, the result will be incomplete. In this case, find the cause of the incident by referring to DIAGNOSTIC PROCEDURE .
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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.