This error suggests you should connect the Pathfinder to engine (different cable).
You can eliminate the fan motor valve failure simply unplugging the cable from it. The engine and truck should start normally working (and on the display appeares the error 158).
Is the "lightning" lamp on the display on?
Anyway - connect the Pathfinder with Diesel Diagnostic cable.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.