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.

2010 Infiniti M45 BaseFACTORY OEM SERVICE PROCEDURE

Fuel Pump Control Module

Fig 1: Identifying Fuel Pump Control Module

Courtesy of NISSAN MOTOR CO., U.S.A.

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.

VOLTAGE CONNECTOR TERMINALS REFERENCE CHART

Condition	Voltage
When engine cranking	Approx. 0 V
After starting engine	Approx. 5 V

If NG, replace fuel pump control module.

Fig 2: Checking Voltage Between FPCM Terminal 4 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

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.

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