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
Work Flow: Notes
WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
- Print all the data of "SELF-DIAG RESULTS" and "DATA MONITOR" for "ENGINE" and "BCM" displayed on CONSULT-II. Refer to CONSULT-II for "ENGINE" and CONSULT-II for "BCM".
- Attach the printed sheet of "SELF-DIAG RESULTS" and "DATA MONITOR" onto the check sheet. Refer to "CHECK SHEET ".
- Based on the data monitor results, put check marks onto the items with "UNKWN" or "NG" in the check sheet table. Refer to "CHECK SHEET ".NOTE: If "NG" is displayed on "CAN COMM" for the diagnosed control unit, replace the control unit.
- According to the check sheet results (example), start inspection. Refer to "CHECK SHEET RESULTS (EXAMPLE) ".
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.