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.
2005 Infiniti Q45FACTORY OEM SERVICE PROCEDURE
Fuel Pump Control Module
- Start engine and warm it up to normal operating temperature.
- Turn ignition switch OFF and wait at least 10 seconds.
- Check voltage between FPCM terminal 4 and ground under the following conditions.FPCM TERMINALS VOLTAGE SPECIFICATIONS CHART
Condition Voltage When engine cranking Approx. 0V After starting engine Approx. 5V - If NG, replace fuel pump control module.
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.