Nissan Almera Tino V10. Manual — part 431
EC-550
[QG (WITH EURO-OBD)]
POSITIVE CRANKCASE VENTILATION
POSITIVE CRANKCASE VENTILATION
PFP:11810
Description
EBS00QU0
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 venti-
lating 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
EBS00QU1
PCV (POSITIVE CRANKCASE VENTILATION) VALVE
With engine running at idle, remove PCV valve 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.
PBIB0492E
SEC481D
SEC137A
POSITIVE CRANKCASE VENTILATION
EC-551
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
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-552
[QG (WITH EURO-OBD)]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00030
Fuel Pressure
EBS00QU2
Idle Speed and Ignition Timing
EBS00QU3
*1: Under the following conditions:
●
Air conditioner switch: OFF
●
Electric load: OFF (Lights, heater fan & rear window defogger)
●
Steering wheel: Kept in straight-ahead position
Calculated Load Value
EBS00QU4
Mass Air Flow Sensor
EBS00QU5
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature Sensor
EBS00QU6
Engine Coolant Temperature Sensor
EBS00QU7
Heated Oxygen Sensor 1 Heater
EBS00QU8
Heated Oxygen sensor 2 Heater
EBS00QU9
Crankshaft Position Sensor (POS)
EBS00QUA
Refer to
EC-347, "Component Inspection"
.
Fuel pressure at idle
Approximately 350 kPa (3.5 bar, 3.57 kg/cm
2
, 51 psi)
Target idle speed
A/T
No-load
*1
(in “P” or N” position)
800
±
50 rpm
M/T
No-load
*1
(in “Neutral” position)
700
±
50 rpm
Air conditioner: ON
A/T
In “P” or N” position
900 rpm or more
M/T
In “Neutral” position
Ignition timing
A/T
In “P” or N” position
10
°±
5
°
BTDC
M/T
In “Neutral” position
8
°±
5
°
BTDC
Calculated load value % (Using CONSULT-II or GST)
At idle
10 - 35
At 2,500 rpm
10 - 35
Supply voltage
Battery voltage (11 - 14V)
Output voltage at idle
1.0 - 1.7*V
Mass air flow (Using CONSULT-II or GST)
1.0 - 4.0 g·m/sec at idle*
5.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature
°
C (
°
F)
Resistance k
Ω
25 (77)
1.9 - 2.1
80 (176)
0.31 - 0.37
Temperature
°
C (
°
F)
Resistance k
Ω
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
Resistance [at 25
°
C (77
°
F)]
8 - 10
Ω
Resistance [at 25
°
C (77
°
F)]
5.0 - 7.0
Ω
SERVICE DATA AND SPECIFICATIONS (SDS)
EC-553
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Camshaft Position Sensor (PHASE)
EBS00QUB
Refer to
EC-353, "Component Inspection"
.
Throttle Control Motor
EBS00QUC
Injector
EBS00QUD
Fuel Pump
EBS00QUE
Resistance [at 25
°
C (77
°
F)]
Approximately 1 - 15
Ω
Resistance [at 20
°
C (68
°
F)]
13.5 - 17.5
Ω
Resistance [at 25
°
C (77
°
F)]
Approximately 1.0
Ω
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