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 Infiniti FX45FACTORY OEM SERVICE PROCEDURE
Testing Condition
Always perform test at a temperature of 5° C (41° F) or more .
With CONSULT-II
- Start engine and warm it up to normal operating temperature.
- Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Select DATA MONITOR mode with CONSULT-II. See Figure .
- Make sure that FUEL T/TEMP SE is more than 0° C (32° F).
- Start engine and wait at least 20 seconds.
If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .
With GST
- Start engine and warm it up to normal operating temperature.
- Check that voltage between ECM terminal 107 (Fuel tank temperature sensor signal) and ground is less than 4.2V.
- Turn ignition switch OFF and wait at least 10 seconds.
- Start engine and wait at least 20 seconds.
- Select MODE 7 with GST.
If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .
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.