Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 62 (ENGINE CONTROLS [SYSTEM & COMPONENT TESTING])AIR INDUCTION SYSTEMSVARIABLE INTAKE-AIR SYSTEM - MAZDA6 (2.3L)VARIABLE INTAKE-AIR SYSTEM (VIS) INSPECTION
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Variable Intake-Air System (VIS) Inspection
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Variable Intake-Air System (VIS) Inspection
WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Start engine.
- Inspect rod operation. See VIS SHUTTER VALVE ROD OPERATION - MAZDA6 (2.3L) table. If shutter valve actuator rod operation is not as specified, inspect as follows:
- Stop engine.
- Connect scan tool to DLC-2.
- Ensure DTC P0661 or P0662 is not displayed. If DTC P0661 or P0662 is displayed, see appropriate DTC testing procedure under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - MAZDA6 2.3L article.
- Check VIS control solenoid valve. See VARIABLE INTAKE-AIR SYSTEM CONTROL SOLENOID VALVE INSPECTION . If VIS control solenoid valve is faulty, replace VIS control solenoid valve. If VIS control solenoid valve is okay, check following:
- Vacuum hose and vacuum chamber for looseness or damage.
- VIS shutter valve actuator. See VARIABLE INTAKE-AIR SYSTEM (VIS) SHUTTER VALVE ACTUATOR INSPECTION .
- Check if VIS shutter valve is stuck open or closed.
Repair as necessary.
VIS SHUTTER VALVE ROD OPERATION - MAZDA6 (2.3L)
| Engine RPM | Shutter Valve Operation |
|---|---|
| Less Than 4500 | Operates |
| More Than 4500 | Does Not Operate |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.