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How to identity soleniod whether it's groundside controlled or powerside controlled.socket plugg in koeo 12 on both wires this is a groundside controlled.0 volt on both wires koeo powerside controlled.right?now i am confused,have toyota mark 2 1gx with p1349 vvti soleniod.koeo am getting 0volts on the wire wich is supposed to have 12 volt but once i disconnect the soleniod i get 12 volts back and 10 mv on ground control wire.wen i start the engine i get 0volts on 12 volts wire socket plugged in and after like 30 second i get 2 to 7 volts on the same wire.wat cound be happening here ooooo?????
Does the 12v come from the ecu or from a relay? Is there other components fed from this 12v supply that could be pulling it low?
I guess it's possible the solenoid itself is shorted pulling the 12v low but I thought that would have blown a fuse or something. Can you do a resistance check on the solenoid?
Yep resistance 9 ohm.12 volt comes from fuse not pcm.what I have noticed is once the key on position the solenoid is energized.I can here it criking. I get 12 volts on one wire wen i unplug the socket but once i attempt to plugg in 12votlts is pulled down to zero and i hear solenoid opening.
Surely no matter what you do that 12v supply from the relay should remain constant. What model is this? Car and engine? Can you post a wiring diagram for that component?
Just looking at a Corolla diagram, both wires coke from the ecu so perhaps the 12v you see is just a circuit integrity check. It doesn't seem right if your solenoid activates with just koeo though.
There's also a tsb for p1349 on some toyotas for a failed cam gear.
I'm wondering if this code sets if the cam timing is off too.
Ah ok. And the 2 to 7 volts I'm assuming is on a multimeter which is averaging out the pulse width readings?
One thing I have seen is the oil gauze block up. It's normally behind a 17 or 19mm plug in the head. They block up and won't let oil pressure to the solenoid.
What model engine is this?
Here's a link to the tsb I mentioned.
Like Matt mentioned, try to be more specific Cyrus. We're here to help but decent feedback is important
A lot of great info has been posted. Our members are awesome!
As for your P1349 it usually ends up in changing the VVT actuator on camshaft. Definitely check filter as mentioned.
Do you have the possibility to perform an actuator test on your scan tool?
