Infiniti Q45. Manual - part 351

 

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Infiniti Q45. Manual - part 351

 

 

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

EC-43

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EC

Blow air into the refueling EVAP vapor cut valve (from hose end B), and check that the air flows freely into
the tank.

4.

Check EVAP vapor cut valve for being stuck to open as follows.

a.

Connect vacuum pump to hose ends A and B using a suitable 3-way connector.

b.

Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.

c.

Put fuel tank upside down.

d.

Apply vacuum pressure to both hose ends A and B [

13.3 kPa (

100 mmHg, 

3.94 inHg)] with fuel gauge

retainer remaining open and check that the pressure is applicable.

REFUELING CONTROL VALVE

1.

Remove fuel filler cap.

2.

Check air continuity between hose ends A and B.
Blow air into the hose end B. Air should flow freely into the fuel tank.

3.

Blow air into hose end A and check there is no leakage.

4.

Apply pressure to both hose ends A and B [20 kPa (150 mmHg, 5.91 inHg)] using a pressure pump and a
suitable 3-way connector. Check that there is no leakage.

PBIB1135E

PBIB1135E

EC-44

POSITIVE CRANKCASE VENTILATION

POSITIVE CRANKCASE VENTILATION

PFP:11810

Description

NBS001QJ

SYSTEM DESCRIPTION

This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV
valve.
Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.
The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes
through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.

Component Inspection

NBS001QK

PCV (POSITIVE CRANKCASE VENTILATION) VALVE

With engine running at idle, remove PCV valve ventilation hose from
rocker cover. A properly working valve makes a hissing noise as air
passes through it. A strong vacuum should be felt immediately when
a finger is placed over valve inlet.

PBIB0062E

PBIB1588E

PBIB1589E

POSITIVE CRANKCASE VENTILATION

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PCV VALVE VENTILATION HOSE

1.

Check hoses and hose connections for leaks.

2.

Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.

S-ET277

EC-46

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

PFP:28591

Description

NBS001QL

If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to 

BL-200, "IVIS (INFINITI VEHICLE IMMOBILIZER

SYSTEM-NATS)"

 .

Confirm no self-diagnostic results of IVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

When replacing ECM, initialization of IVIS (NATS) system
and registration of all IVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of IVIS (NATS)
initialization and all IVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual,
IVIS/NVIS.

SEF543X

 

 

 

 

 

 

 

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