Altima V6-3.5L (VQ35) (2003)
Variable Induction Control Solenoid: Description and Operation
DTC P1800 VIAS CONTROL SOLENOID VALVE
System Description
Description
When the engine is running at low or medium speed, the power valve is fully closed. Under this condition, the effective suction port length is equivalent
to the total length of the intake manifold collector's suction port including the intake valve. This long suction port provides increased air intake which
results in improved suction efficiency and higher torque generation.
The surge tank and one-way valve are provided. When engine is running at high speed, the ECM sends the signal to the VIAS control solenoid valve.
This signal introduces the intake manifold vacuum into the power valve actuator and therefore opens the power valve to two suction passages together in
the collector.
Under this condition, the effective port length is equivalent to the length of the suction port provided independently for each cylinder. This shortened
port length results in enhanced engine output with reduced suction resistance under high speeds.
COMPONENT DESCRIPTION
Power Valve