pablo help

Yes I checked everything
Wires 1939, there is right voltage
Dealership put test ecu on truck new valve does same thing

 

I checked and traced 300, 300r, 593b no shortage all wires look fine
Is there a relay because I could find one

 

i put back staff in cab didn't have time to put staff back by engine
what voltage i need to have on 300 and 592b
and can i run power manually from battery that i can cotrol with switch
do i need 12v to supply to solenoid all time or only when i need to fan on
if i don't find problem at least i can have manual switch as back-up
that way i can go back to work

Thanks for you help

 

Hi
I checked wires and for some reason 300R has 4.6volt on at
Would you know what is problem and I try diagram and I can see that go to fire wall after that I do not know where It's goes

 

When truck is running I have 4.6 on 300r and 12 on 300
But when truck is not running I have 0 on 300r and 12 on 300 with key in turn on
And 4.6 on 300r stays on all time

 

I find that white wire on fire wall connector was caming up when you turn connector to closed
I instilled this is 4 solenoid and this one I can't connect to ecu because it will shortage
Like every before