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
Problem Diagnosis
NOTE:
Perform the following procedure when problem was not found after performing testing procedure, when Diagnostic Trouble Code (DTC) cannot be verified using DTC CONFIRMATION TESTS, or when reported symptom does not recur.
- Clear DTCs. See appropriate SELF-DIAGNOSTICS article. Inspect affected circuit ground connections by removing ground bolt or screw. Inspect all mating surfaces for rust, dirt or corrosion. Clean all mating surfaces as necessary. Reinstall bolt or screw.
- Check for aftermarket electrical accessories which may be interfering with ground circuit. Perform INTERMITTENT SIMULATION under TEST PROCEDURES.
- The most common cause of an intermittent problem is poor electrical connections. Inspect affected harness connectors for loose connections, corrosion or loose connections.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.