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
Fail-Safe System Check
WARNING: This page is about a different car, the 2004 Infiniti M45 and 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to ON position.
- Turn ASCD main switch to ON and check if the "set indicator" blinks.
If the indicator lamp blinks, check the following .
- ASCD steering switch. Refer to ASCD STEERING SWITCH CHECK .
- Drive the vehicle at more than 40 km/h (25 MPH) and push SET/COAST switch.
If the indicator lamp blinks, check the following .
- Vehicle speed sensor. Refer to VEHICLE SPEED SENSOR CHECK .
- ASCD pump circuit. Refer to ASCD PUMP CIRCUIT CHECK .
- If vehicle speed sensor and ASCD pump circuit are OK, replace ASCD control unit.
- Depress brake pedal slowly (brake pedal should be depressed more than 5 seconds).
If the indicator lamp blinks, check the following .
- ASCD brake/stop lamp switch. Refer to ASCD BRAKE/STOP LAMP SWITCH CHECK .
- END. (System is OK.)
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.