Hi all

I am working on a Toyota reachtruck 9BRU18, with lack of use but that worked near the sea and let in outsides without any roof protection for some time. Is almost new just degradated by environmental conditions.

The issue is that with battery pack at 36V, once I turn on the EPO and turn on the ignition switch:
1. Display turns on with its beep and initialize safe test.
2. Suddenly it stops at step 4/27 and displays Code FH FN (call service), without any error displayed.
I checked both Curtis controllers (Traction/Hyd) and non of them were receiving any power supply. Neither MPC/STR contactors were activating. I followed the cables and found out that Controllers signals came from a electric PCB board with 4 relays and fuses which were fine and operative.

I am working in blind, Does any one have any information related to this model: Service manual with diagrams or at least from previous model 8BRU18 to work on it, or at least any help.

Thanks