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.
2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
4. Check Key Switch
WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch OFF.
- Disconnect key switch and key lock solenoid connector (floor shift) or key switch connector (column shift).
- Check continuity between key switch and key lock solenoid harness connector M27 (floor shift) or key switch harness connector M80 (column shift) terminals 3 and 4.
- When key is inserted in ignition key cylinder : Continuity should exist
- When key is removed from ignition key cylinder : Continuity should not exist
OK or NG
OK >> GO TO 5.
NG >> Replace the key switch and key lock solenoid connector (floor shift) or key switch connector (column shift).
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.