System Check
WARNING: This page is about a different car, the 2001 Mazda Protege, 2001 Mazda Millenia, 2001 Mazda MX-5 Miata, 2001 Mazda MPV, and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Shutter valve actuator rod retracts for 5 seconds after engine is started.
Connect scan tool to DLC-2. DLC-2 is located under instrument panel, left of steering column. Select RPM PID. Start engine, and let idle. Turn on all electrical loads. Shutter valve actuator rod should be extended at idle. See Fig 1 . Gradually increase engine speed to 5250 RPM and ensure actuator rod retracts. If system actuator does not operate as specified, check for vacuum leaks. If no vacuum leaks are detected, check shutter valve and shutter valve solenoid.