WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HIGH PRESSURE FUEL PUMP FUNCTION

WITH CONSULT-III

Start engine.

Check "FUEL PRES SEN V" in "DATA MONITOR" mode with CONSULT-III.

MONITOR ITEM CONDITION

Monitor Item	Condition	Values/Status
FUEL PRES SEN V	Engine speed: Idle	980 - 1, 200 mV
FUEL PRES SEN V	Engine speed: Revving engine from idle to 4, 000 RPM quickly	1, 100 - 2, 900 mV

WITHOUT CONSULT-III

Start engine.

Check the voltage between ECM harness connector and ground.

VOLTAGE SPECIFICATION

ECM				Condition	Voltage
+		-
Connector	Terminal	Connector	Terminal
F110	105	E80	175	[Engine is running] Warm-up condition Idle speed NOTE: The pulse cycle changes depending on RPM at idle	BATTERY VOLTAGE (11 - 14 V)* Courtesy of NISSAN MOTOR CO., U.S.A.
F110	105	E80	175	[Engine is running] Warm-up condition Engine speed: 2, 000 RPM	BATTERY VOLTAGE (11 - 14 V)* Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: INSPECTION END

NO: Proceed to "DIAGNOSIS PROCEDURE ".

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.

Safety Warning

Component Function Check

Use the Manual With the Right Hardware

When to See a Mechanic