Help for Lx470 front magnetic valve wiring for the A/C system

[Sawa]

I own lx470 2001, a/c compressor and freon pressure are good but no cooled air from front blower while rear a/c and center console cooler are ok. A/c techension add grounding wire for front magnetic valve which made front to cool down while the center cooler stopped cooling... Any idea what is wrong

 

[huntn80]

Im not sure but, i have seen the air distribution flaps or flap motors fail, which makes the a/c system only blow cold air to the flaps that are open, i would try testing this by using the heat and changing all the settings and comparing that to the the a/c and changing all the settings. if the heat distribution is normal and a/c isnt its something else, if they are the same than its a flap or flap motor issue

 

[Sawa]

thanks "huntn80"
This front magnetic valve or solenoid is on the leguid line before the front evaporator
Which has to be energized to make it open to let freon to evaporator
I think hot air is due to the valve closing and no freon to evaporator ,question is why it is closed and have to give it grounding to forse it to open