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.
2003 Nissan-Datsun Sentra SE-R, AutomaticFACTORY OEM SERVICE PROCEDURE
Learning Procedure
- Turn ignition switch on. Wait at least one second. Turn ignition switch off. Wait at least ten seconds.
- Start engine. Warm up to normal operating temperature. Turn ignition switch off. Wait at least ten seconds.
- Start engine and let idle for at least thirty seconds.
- Disconnect Throttle Position (TP) sensor harness connector (Brown), then reconnect it within five seconds. Wait twenty seconds.
- Ensure idle speed is within specifications. See IDLE SPEED, IGNITION TIMING & IDLE MIXTURE RATIO ADJUSTMENT in ON VEHICLE ADJUSTMENTS article. If idle is not as specified, result will be incomplete. See SYMPTOMS in TROUBLE SHOOTING - NO CODES article.
- Rev engine two or three times. Ensure idle speed and ignition timing are within specification. See IDLE SPEED, IGNITION TIMING & IDLE MIXTURE RATIO ADJUSTMENT in ON VEHICLE ADJUSTMENTS article. If idle speed and timing are not as specified, see SYMPTOMS in TROUBLE SHOOTING - NO CODES article.
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.