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 Infiniti FX35 AWDFACTORY OEM SERVICE PROCEDURE
Overall Function Check (Using GST)
Use this procedure to check the overall function of the vehicle speed sensor circuit. During this check, a 1st trip DTC might not be confirmed.
- Raise and support drive wheels.
- Start engine.
- Read vehicle speed sensor signal in MODE 1. The vehicle speed sensor on GST should be able to exceed 6 MPH when rotating wheels with suitable gear position.
- If NG is displayed, go to DIAGNOSTIC PROCEDURE . If NG is not displayed, system is okay at this time.
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.