Infiniti FX35, FX50 (S51). Manual - part 923

PRECAUTIONS

EC-1233

< PRECAUTION >

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• When installing C.B. ham radio or a mobile phone, be sure to

observe the following as it may adversely affect electronic
control systems depending on installation location.

- Keep the antenna as far as possible from the electronic con-

trol units.

- Keep the antenna feeder line more than 20 cm (8 in) away

from the harness of electronic controls.
Never let them run parallel for a long distance.

- Adjust the antenna and feeder line so that the standing-wave

ratio can be kept smaller.

- Be sure to ground the radio to vehicle body.

SEF708Y

EC-1234

< PREPARATION >

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PREPARATION

PREPARATION

PREPARATION

Special Service Tools

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NOTE:
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

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Tool number
(Kent-Moore No.)
Tool name

Description

(J-44321)
Fuel pressure gauge 
kit

Checks fuel pressure

LEC642

Tool name
(Kent-Moore No.)

Description

Leak detector 
i.e.: (J-41416)

Locates the EVAP leak

EVAP service port 
adapter
i.e.: (J-41413-OBD)

Applys positive pressure through EVAP service 
port

Fuel filler cap adapter
i.e.: (MLR-8382)

Checks fuel tank vacuum relief valve opening 
pressure

Socket wrench

Removes and installs engine coolant temperature 
sensor

S-NT703

S-NT704

S-NT815

S-NT705

PREPARATION

EC-1235

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Oxygen sensor thread 
cleaner
i.e.: (J-43897-18)
(J-43897-12)

Reconditions the exhaust system threads before 
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco-
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor

Anti-seize lubricant 

i.e.: (Permatex

TM

 

133AR or equivalent 
meeting MIL specifica-
tion MIL-A-907)

Lubricates oxygen sensor thread cleaning tool 
when reconditioning exhaust system threads.

Tool name
(Kent-Moore No.)

Description

AEM488

S-NT779

EC-1236

< PERIODIC MAINTENANCE >

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FUEL PRESSURE

PERIODIC MAINTENANCE

FUEL PRESSURE

Inspection

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FUEL PRESSURE RELEASE

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-III.

3.

Start engine.

4.

After engine stalls, crank it two or three times to release all fuel pressure.

5.

Turn ignition switch OFF.

 Without CONSULT-III

1.

Remove fuel pump fuse (1) located in IPDM E/R (2).

2.

Start engine.

3.

After engine stalls, crank it two or three times to release all fuel
pressure.

4.

Turn ignition switch OFF.

5.

Reinstall fuel pump fuse after servicing fuel system.

FUEL PRESSURE CHECK

CAUTION:

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
• Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel

pressure cannot be completely released because S51 models do not have fuel return system.

• Use Fuel Pressure Gauge Kit [SST:(J-44321)] to check fuel pressure.

1.

Release fuel pressure to zero.

2.

Install the inline fuel quick disconnected fitting (A) between fuel
damper (1) and injector tube.

3.

Connect the fuel pressure test gauge (quick connector adapter
hose) (B) to the inline fuel quick disconnected fitting.

4.

Turn ignition switch ON and check for fuel leakage.

5.

Start engine and check for fuel leakage.

6.

Read the indication of fuel pressure gauge.

7.

If result is unsatisfactory, check fuel hoses and fuel tubes for
clogging.
If OK, Replace “fuel filter and fuel pump assembly”.
If NG, Repair or replace malfunctioning part.

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At idling

: Approximately 350 kPa (3.57 kg/cm

2

, 51 psi)

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