airsuspension W638

[jaakko]

airsusp is broken, faultlight illuminate, rear is so call lowrider, car is W638 v-class 230TD 1998, if i take the susp controlmodule off and give gnd pole 9 , compressor press air to bags, i bought a new contrmodule , no help, i have connection sheet but it was quite difficult to read what should be ok or wrong , i have checked gnd , power supply , D+, is OK, but power supp +5 V is missing, (box no 6384460117)
Any tips or make I manual switch to raise...