VTCS Solenoid Check
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, 2002 Mazda MX-5 Miata, and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Remove VTCS solenoid. Check solenoid airflow. Air should flow through ports "B" and "C". See Fig 1 . Apply battery voltage to solenoid. Check airflow. Air should flow through ports "A" and "B". If air flow is not as specified, replace VTCS solenoid. If solenoid is okay, check vacuum lines. Repair as necessary. If problem is not present, Check for open or short in wiring. See WIRING DIAGRAMS article. Repair or replace wiring harness as necessary.