P1800 2003 INFINITI I35 - Variable Intake Air System Control Solenoid Valve Circuit
- Faulty VIAS control solenoid valve
- VIAS control solenoid valve circuit harness is open or shorted
- VIAS control solenoid valve circuit poor electrical connection
When is the code detected?
- Engine Light ON (or Service Engine Soon Warning Light)
P1800 2003 INFINITI I35 Description
The surge tank and one-way valve are provided. When the engine is running at high speed, the Engine Control Module (ECM) sends the signal to the Variable Intake Air System (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.
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