@ iirk1. This thread is on a SP3450 with 814 code. Different than an 814 on RR/RD
on rd /RR 5000 or 5200 s models 814 is height reset switch or height encoder... check wires on mast and recal
I know this is an old thread but wanted to share a note.
SP3450H
My problem was 814 @ power up. MRC1 was not powering up & ED2 not closing. Had already checked off the two 814 steps in the book. OK
MRC1 was not getting B+ at CA402-14. This comes from CA212-8 (no B+ @ CA212-8 either). Following the dist board diag this power comes from the bank of caps bott right center of board.
Luckily I have an old dist board with other issues to swap in for test. Problem resolved!
-Yes, K2 was checked
-Yes, All Connections/plugs were checked.
Confirmed by reinst. orig board and problem returned.
Update: Uppon inspection of old dist board I found the solder point of the large coil (bottom center) next to CR7 had broke. For whatever reason this board DID NOT have the white silicone on the coil and caps like most current dist boards have now. I re-soldered the landing point and tested the board. No fail! :)
any time I see an electric forklift throwing "wifs" (weird intermittent failures) I also insist that the customer allow us to get all the corrosion out from under the battery compartment, replace any power cables with cracked or corrosion soaked insulation and add an anti-static/ground strap (especially if this unit does not have a black rubber traction tire anymore) if they want to expect any sort of warranty.
When you say "all the lines ohm out good" are you referring to all the power cables having greater than 100k ohms resistance between the conductor and the frame of the truck when the battery is removed? or are you saying all of the power cables have proper continuity between expected connections?
Event Code 814
Access 3 communication error.
Steering, traction and lift disabled.
Step 1: Check condition of battery and cable connections.
Low or poor battery condition and/or cable connections
can cause this event.
Step 2: Check BDI settings. Discharging the battery
below recommended level can cause this event.