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.
1993 Nissan-Datsun Sentra SE-R, AutomaticFACTORY OEM SERVICE PROCEDURE
Ignition Coil Power Source & Ground
- Disconnect 3-pin ignition coil connector. Turn ignition on. Check voltage between ground and terminal "B" of ignition coil connector. See Figure.
- If battery voltage is not present, go to IGNITION COIL/POWER TRANSISTOR RELAY. If battery voltage exists, turn ignition off. Check continuity between ground and ignition coil connector terminal "A".
- If continuity does not exist, repair ground circuit between ignition coil connector terminal "A" and ground. Repeat test for remaining coils.
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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