P1522 MAZDA - Intake manifold air control solenoid 2 short/open circuit.
Possible causes:
Faulty air control solenoid.
Air control solenoid harness is open or shorted.
Air control solenoid circuit poor electrical connection.
Faulty engine control module (ECM).
This is the listing from a Google search. While the solenoid and computer are possible suspects, those are way down at the bottom of the list. When a part is referenced in a fault code, it is actually the cause of that code less than half of the time. Wiring and connector terminal problems are much more common. Those are what we have to eliminate before we spend our customer's money on parts.
Given the relatively low mileage, the best suspect would probably be a light film of corrosion on the connector terminals. A mating terminal can be spread too, but that typically comes from repeated plugging and unplugging a connector while searching for the cause of a problem.
Also, follow the wiring harness to see if it is laying on the sharp edge of a metal bracket, or is sliding back and forth on an inner fender as the engine rocks. Do not overlook the possibility that a terminal got bent over when you connected the plug. That has happened to all of us at one time.
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Saturday, January 27th, 2018 AT 5:37 PM