Make sure the ignition is OFF. The VAF which is normally marked as JE02, it is between the air box and the throttle body, it has a plug connected to it. Check that the plug to the VAF is not corroded, disconnect the plug and scratch the terminals with a knife/blade to clean them and spray some penetrating fluid into both ends. If the problem persists .. let me know.
17" ROH Adrenaline Alloy Wheels, Superchip (for hi-octane +12hp), Stainless steel scuff plates, Powerfolding jdm mirrors, Mazda 6 MPS brakes (front + rear), 929 brake master (mx6 reservoir), JDM headlights, Altezza tail lights, Modified stock radio/cd with line-out +amp, Sound deadened doors + rear quarters << massive improvement