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.
2006 Mazda MX-5 Miata BaseFACTORY OEM SERVICE PROCEDURE
Variable Intake Air Control Operation Inspection
- Start the engine.
- Inspect the rod operation. (See VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR INSPECTION
.)
- If the rod operation is not as specified, inspect as follows:
- Stop the engine.
- Connect the WDS or equivalent to the DLC-2.
- Verify that DTC P0661 or P0662 is not displayed.
- If DTC P0661 or P0662 is shown, perform DTC inspection.
(See DTC TABLE .)
- If DTC P0661 or P0662 is shown, perform DTC inspection.
- Inspect the variable intake air solenoid valve.
(See VARIABLE INTAKE AIR SOLENOID VALVE INSPECTION .)
- If the variable intake air solenoid valve is not normal, replace the variable intake air solenoid valve.
- If the variable intake air solenoid valve is normal, inspect the following:
- Vacuum hose and vacuum chamber for looseness or damage
- Shutter valve actuator
(See VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR INSPECTION .)
- Shutter valve stuck open or closed
Factory Service Tools
Use the Manual With the Right Hardware
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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.