Nissan Altima L32. Instruction — part 503
VARIABLE INDUCTION AIR SYSTEM
EC-1133
< FUNCTION DIAGNOSIS >
[VQ35DE]
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VARIABLE INDUCTION AIR SYSTEM
System Diagram
INFOID:0000000004362002
System Description
INFOID:0000000004362003
INPUT/OUTPUT SIGNAL CHART
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
In the medium speed range, the ECM sends the ON signal to the VIAS control solenoid valve. This signal
introduces the intake manifold vacuum into the power valve actuator and therefore closes the power valve.
JMBIA1831GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
VIAS control
VIAS control solenoid valve 1
VIAS control solenoid valve 2
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Throttle position sensor
Throttle position
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage*
JMBIA0181GB
EC-1134
< FUNCTION DIAGNOSIS >
[VQ35DE]
VARIABLE INDUCTION AIR SYSTEM
Under this condition, the pressure waves of the exhaust stroke do not disturb the pressure waves of the intake
stroke of each opposite bank. Therefore, charging efficiency is increased together with the effect of the long
intake passage.
However, in the high speed range, the ECM sends the OFF signal to the VIAS control solenoid valve and the
power valves is opened. Under this condition, the pressure waves of intake stroke are resonant with those of
each opposite bank exhaust stroke. Therefore, charging efficiency is also increased.
In addition, both valves 1 and 2 are opened or closed in other ranges mentioned above. Thus maximum
charging efficiency is obtained for the various driving conditions.
VACUUM HOSE DRAWING
1.
Power valve actuator 1
2.
VIAS control solenoid valve 1
3.
VIAS control solenoid valve 2
4.
Power valve actuator 2
5.
Intake manifold collector
JMBIA0172ZZ
VARIABLE INDUCTION AIR SYSTEM
EC-1135
< FUNCTION DIAGNOSIS >
[VQ35DE]
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Component Parts Location
INFOID:0000000004404412
1.
Power valve actuator 1
2.
Intake valve timing control solenoid
valve (bank 1)
3.
Power steering pressure sensor
4.
Intake valve timing control solenoid
valve (bank 2)
5.
VIAS control solenoid valves 1 and 2 6.
Fuel injector (bank 2)
7.
Ignition coil (with power transistor)
and spark plug (bank 2)
8.
Crankshaft position sensor (POS)
9.
Engine coolant temperature sensor
10. Camshaft position sensor (PHASE)
(bank 2)
11. ECM
12. Refrigerant pressure sensor
13. Battery current sensor
14. PNP switch
15. Condenser-2
16. Mass air flow sensor (with intake air
temperature sensor)
17. EVAP service port
18. Camshaft position sensor (PHASE)
(bank 1)
19. Electric throttle control actuator
20. Power valve actuator 2
21. EVAP canister purge volume control
solenoid valve
22. Ignition coil (with power transistor)
and spark plug (bank 1)
23. Knock sensor
ALBIA0110ZZ
EC-1136
< FUNCTION DIAGNOSIS >
[VQ35DE]
VARIABLE INDUCTION AIR SYSTEM
1.
Mas air flow sensor (with intake air
temperature sensor)
2.
Air cleaner case
3.
Engine coolant temperature sensor
4.
EVAP canister purge volume control
solenoid valve
5.
Power valve actuator 1
6.
VIAS control solenoid valve 1
7.
VIAS control solenoid valve 2
8.
Power valve actuator 2
9.
Power steering pressure sensor
10. Tie rod (RH)
11. Power valve actuator 2
12. Camshaft position sensor (PHASE)
(bank 1)
13. Camshaft position sensor (PHASE)
(bank 2)
: Vehicle front
ALBIA0101ZZ
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