So...

Can anybody comment this... I would be very gratefull...
We have two trucks. First truck is Caterpillar GP25N and Mitshubishi FG25N... instalations and computers are completly the same.
ECM module is MEC34-023 - 23710 GX11C.

Mits truck is completly in order with any electrical problems and faults at the display... Cat hat E38 at display and ofcourse it is not running ok. Gas instalation is completly controled and serviced also all wirings are ok...
When I transfer ECM from Cat to Mits (which is ok) there is the same problem... erorr 38...
Also it can not be erased with The Diagnoser..... that means that we have problem with signal from ECM to LPG valve which is located at evaporator...
What to do now? Does anybody have electric scheme from ECM because scheme is not provided at CAT/Mitsh manuals...

Any suggestions or comments?

Thanks