VAD shutter valve operation

WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: VAD Shutter Valve Operation Specifications

Courtesy of MAZDA MOTORS CORP.

If the shutter valve operation is not as specified, inspect as follows:

(1) Verify that DTC P2676 or P2677 is not displayed.
- If DTC P2676 or P2677 is shown, perform DTC inspection. (See DTC TABLE .)
(2) Inspect VAD control solenoid valve.
(See VARIABLE AIR DUCT (VAD) CONTROL SOLENOID VALVE INSPECTION .)
- If the VAD control solenoid valve is not okay, replace VAD control solenoid valve.
- If the VAD control solenoid valve is okay, inspect the following:
  - Vacuum hose looseness or damage
  - Vacuum chamber cracks or damage
  - Shutter valve actuator.
    (See VARIABLE AIR DUCT (VAD) SHUTTER VALVE INSPECTION .)
  - Shutter valve is stuck open or closed.