Nissan Frontier D22. Instruction — part 369
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-579
[KA24DE]
C
D
E
F
G
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A
EC
13.
CHECK ONE-WAY FUEL VALVE-II
1.
Make sure that fuel is drained from the tank.
2.
Remove fuel filler tube and hose.
3.
Check one-way fuel valve for operation as follows.
When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.
OK or NG
OK
>> INSPECTION END.
NG
>> Replace fuel filler tube or replace one-way fuel valve
with fuel tank.
SEF665U
EC-580
[KA24DE]
POSITIVE CRANKCASE VENTILATION
POSITIVE CRANKCASE VENTILATION
PFP:11810
Description
UBS00DDU
This system returns blow-by gas to the intake collector.
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 duct 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 intake collector under all conditions.
Inspection
UBS00DDV
PCV (POSITIVE CRANKCASE VENTILATION) VALVE
With engine running at idle, remove PCV valve from breather sepa-
rator. 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 the valve inlet.
VENTILATION HOSE
1.
Check hoses and hose connections for leaks.
AEC042B
SEF244Q
POSITIVE CRANKCASE VENTILATION
EC-581
[KA24DE]
C
D
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A
EC
2.
Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.
SET277
EC-582
[KA24DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00030
Fuel Pressure Regulator
UBS00DDW
Idle Speed and Ignition Timing
UBS00DDX
*1: Throttle position sensor harness connector disconnected or using CONSULT-II “WORK SUPPORT” mode
*2: Throttle position sensor harness connector connected
*3: Under the following conditions:
●
Air conditioner switch: OFF
●
Electrical load: OFF (Lights, heater fan & rear window defogger)
●
Steering wheel: Kept in straight-ahead position
Ignition Coil
UBS00DDY
Mass Air Flow Sensor
UBS00DDZ
*: Engine is warmed up to normal operating temperature and idling under no-load.
Engine Coolant Temperature Sensor
UBS00DE0
EGR Temperature Sensor
UBS00DE1
Fuel Pump
UBS00DE2
IACV-AAC Valve
UBS00DE3
Injector
UBS00DE4
Fuel pressure at idling
kPa (kg/cm
2
, psi)
Vacuum hose is connected
Approximately 235 (2.4, 34)
Vacuum hose is disconnected
Approximately 294 (3.0, 43)
Base idle speed*1
rpm
No-load*3 (in P or N position)
750
±50
Target idle speed*2
rpm
No-load*3 (in P or N position)
800
±50
Air conditioner: ON
rpm
In P or N position
875 or more
Ignition timing*1
In P or N position
20
°±2° BTDC
Primary voltage
V
Battery voltage 12
Primary resistance [at 20
°C (68°F)] Ω
Approximately 1.0
Secondary resistance [at 20
°C (68°F)] kΩ
Approximately 10
Supply voltage
V
Battery voltage (11 - 14)
Output voltage
V
0.9 - 1.8*
Mass air flow
(Using CONSULT-II or GST)
g·m/sec
0.9 - 5.8 at idle*
7.5 - 13.2 at 2,500 rpm*
Temperature
°C (°F)
Resistance
k
Ω
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
EGR temperature
°C (°F)
Voltage
(V)
Resistance
(M
Ω)
0 (32)
4.56
0.62 - 1.05
50 (122)
2.25
0.065 - 0.094
100 (212)
0.59
0.011 - 0.015
Resistance [at 25
°C (77°F)] Ω
0.2 - 5.0
Resistance [at 25
°C (77°F)] Ω
Approximately 10.0
Resistance [at 25
°C (77°F)] Ω
7.3 - 9.9
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