yes ctforkliftguy, even the controls go through the steering card too, they have to because if any steering failure occurs it has to shut the truck down to avoid any accidents.
if possible when operating the truck can you monitor the steering card display and see if it is flashing any codes?
Find a way to jack up and block the truck and operate it and try to get it to duplicate the error. Watch the steering card display and see what it shows. It should be a single digit display, tell me what it shows during this error condition.
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