As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORMED TROUBLESHOOTING IAW GVII-G600 IWDM REV.3 42-11-00. MEASURED ASCB #2 BACKUP BUS END RESISTOR REF DES "103R8" IN SYSTEM MONITOR TEST PANEL SUCCESSFULLY. GAINED ACCESS TO ASCB BUS COUPLER #1 AND FOUND WIRING STRIPPED FROM TOO LONG DISTANCE EXPOSING CENTER CONDUCTOR. THIS IS CAUSING BUS TO SHORT WITH BARE WIRES TOUCHING EACH OTHER