Komatsu pw130 1997 and ls epc valve output from pump controller

We have been tracking problem with this unit for some time. Related on stalling on bigger load.

After checking pilot pressure and ls pressure, we noticed that ls epc pressure does not chage at all. Based on shop manual it should. Output voltage for ls epc valve is only 7V, mA values seems to be ok. With travel speed epc valve it gives 24 and 0-1000mA, just like maual says.

Cables are replaced and ok. Is there any other option than bad pump controller? There are a change that wires are...

Komatsu pw130 1997 and ls epc valve output from pump controller

Komatsu pw130 1997 and ls epc valve output from pump controller