Originally Posted by ROAquaman
Well I suffered the failure or activation of my 2001 Workhorse P32 Auto Park Brake last week.
I ordered new pressure switches for RGS pump location and for under coach at tee. I also replaced 4 pin relay. I still do not have power to hydraulic pump motor. The 10 amp fuse was good but replaced anyway. Iím not sure what else to check at this point. Maybe the yellow brake selector interlock in cab has failed open?
I did find schematic but Iím limited on my understanding of 12VDC. I could not find any other relay under coach near tee as called out by one article I read. Hate to replace pump/motor before proving them out as not working. Reservoir is full.
Any ideas out there for me? Any help in identifying power supply to pump/motor would be greatly appreciated.
I have the same problem no power after system failed.
I have searched the forum for 5 days an still nothing as to where to begin looking at a power supply.
I have used a power probe all the way back to the grey switch an each time I have actuated the pump. Even pulled off connection to the yellow button an it to actuated the pump.
I activated the other side an the plunger for the key switch activated.
So it might be in there. So far I have had no replies to questions about this to verify if the key switch needs replaced or there is something else I'm missing.
What schematic do you have?
Let me know if you got yours fixed.