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
Ignition Coil Resistance
- Carefully inspect external housing for burned spots indicating secondary circuit arcing to primary or ground circuits. Disconnect ignition coil primary 2-pin harness connector. Measure resistance between primary connector terminals.
- Measure resistance between secondary tower and positive terminal No. 1 (PU/W) wire, of coil primary connector. If either resistance is not as specified, replace ignition coil. See IGNITION COIL RESISTANCE table.
IGNITION COIL RESISTANCE
| Application | Primary | Secondary | ||||
|---|---|---|---|---|---|---|
| Frontier & Xterra (2.4L) | (1) Less than 1 | (1) 7-13 | ||||
| Frontier & Xterra (3.3L) | (2) 1.0 | (2) 10,000 | ||||
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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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