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
System Description
WARNING: This page is about a different car, the 2006 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
Power is supplied at all times
- through 10A fuse [No. 20, located in fuse block (J/B)]
- to stop lamp switch terminal 1 and
- to stop lamp relay terminal 1 (with VDC).
When the brake pedal is pressed, the stop lamp switch is closed and power is supplied
- through stop lamp switch terminal 2
- to stop lamp relay terminal 3 (with VDC)
- through stop lamp relay terminal 4 (with VDC)
- to rear combination lamp LH and RH terminal 7, and
- to high-mounted stop lamp terminal 1.
Ground is supplied
- to rear combination lamp LH and RH terminal 5
- through grounds E9, E15 and E24, and
- to high-mounted stop lamp terminal 2
- through grounds B117 and B132.
With power and ground supplied, the stop lamps illuminate.
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.