DTC P2009 is driving me crazy!!! Can anyone tell me what im doing wrong?

[biondos1]

03 msp 140k

Runs really well other than the p2009 code which is killing my gas mileage!!!

i have a new solenoid installed, as i thought that was the issue but it turns out that the solenoid is always energized so the shutter valve is always open. from what i read the shutter valve should open after 3700rpm

i checked the continuity of the blue and red wire from the plug to the ecu and its all good. then i checked the continuity of the white and red wire from the plug to the fuse box and thats good also.

so whats the issue? the pcm is supposed to block the ground signal until 3700rpm right?

my friend has a protege p5 and on his the solenoid has 12.5v with ignition on but it doesn't flap open. with the ignition on mine flaps open right away.

this is killing me. i just bought the car last week, but used to have #538 a few years ago. this one has been sitting for about 3 months

thanks for any help in advance

 

[biondos1]

by the way this is what i followed except that i didnt understand what the 4t connector was but i found the blue and red wire instead
http://dvs-mazda.ru/files/MPV/1st/esicont/en/srvc/html/BME010202000W02.html

 

[msprotege2k3.5]

the butterfly could be stuck open. only way to check is to pull the manifold.

 

[biondos1]

i dont think thats the issue though because the solenoid shouldnt have power at idle. the actuator moves feely. im refering to the vtcs not the vics

 

[hornsfan10609]

VTCS only actuates when you first start the car, and the valves are open when the engine is off or if the sensors/actuators are bad. VICS is what opens at 3500rpm. When you first start the car the VTCS flaps will close some then open back up and stay there.

 

[msprotege2k3.5]

i dont think thats the issue though because the solenoid shouldnt have power at idle. the actuator moves feely. im refering to the vtcs not the vics

i know what your are talking about and of the butterfly wont close you will get a code. hense the poor gas milage becuase your dumping more air in the motor and the computer is over correcting the issue by adding me fuel which means bad mpgs.

 

[biondos1]

so our cars are diff than p5's? anyway i decided to switch the solonoids around and the cel light went away and i passed inspection. but now my manifold acts like the p5 manifold where the solonoid for the vtcs doesnt open at idle.

 

[biondos1]

thanks guys

 

[ND4MSP]

How does the car run when both plugs are swapped?