VARIABLE SWIRL SHUTTER VALVE SWITCH INSPECTION [L3 Turbo]

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  Note
  • Perform the following inspection only when directed.

Voltage Inspection

1. Turn the ignition switch to the ON position (Engine off).

2. Verify that the PCM terminal 1N voltage is as shown in the following table when the variable swirl shutter valve actuator rod is depressed and released by hand.

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  • If not as specified, perform the “Circuit Open/Short Inspection”.
    ― If there is no open or short circuit, replace the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)

Variable swirl shutter valve switch output voltage

Condition | PCM terminal 1N
--- | ---
Released (Open position) | Below 1.0 V
Depressed (Closed position) | B+

Circuit Open/Short Inspection

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1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)

2. Inspect the following harnesses for an open or short circuit. (Continuity check)

Open circuit

  • If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
    ― Variable swirl shutter valve switch terminal A and PCM terminal 1N
    ― Variable swirl shutter valve switch terminal B and body ground.

Short circuit

  • If there is continuity, there is a short circuit. Repair or replace the wiring harness.
    ― Variable swirl shutter valve switch terminal A and power supply
    ― Variable swirl shutter valve switch terminal A and body ground
    ― Variable swirl shutter valve switch terminal B and power supply