What was found
CENTER FUEL TANK GAUGE WENT BLANK AFTER TAKE OFFON ARRIVAL FUEL QTY PROCESSOR BITE INDICATED AS FOLLOWS: PRESENT FAULTS - CT HIZ WIRE OPEN AT SPAR (G). LEG 00 FAULTS - CT HIZ SHIELD OPEN AT SPAR (A06), CT TU 3 SHORTED IN TANK (A01), CT HIZ WIRE OPEN AT SPAR (A05). SELF TEST- CT HIZ WIRE OPEN AT SPAR (G). FAULTS APPEAR TO RELATE TO LEFT CENTER HARNESS IAW WDM 28-41-51-2. FUEL QTY TEST SYS INTERFACE BOX PSD60 NOT AVAIL HNL. UPON ARRIVAL, ALL TANK UNITS IN LEFT CTR TANK SHOWED READINGS OF 0.0 PF. RT CTR TANK SHOWED AN AVERAGE 110.0 PF FOR EACH UNIT. AFTER SITTING, INIDICATIONS STABILIZED & CAPACITANCE MATCHED FOR LT & RT CTR TANK UNITS. SELF TEST NOW PASSES. SHOOK CONNECTOR D6892 & PRECEEDING WIRE WHILE MONITORING FUEL INDICATION FOR CTR TNK, NO FLUCTUATIONS OR BLANKING NOTED IAW WDM 28-41-41-2.1, FIM 28-41 FAULT TREE 847. SUGGEST FUEL TANK ENTRY FOR FURTHER TROUBLESHOOTING. NO ACTIVE FAULTS AT THIS TIME, FUEL INDICATIONS NORMAL. REPLACED FUEL QTY PROCESSOR UNIT IAW AMM28-41-08, OPS CHKD NORMAL. OPS TEST OF FUEL QTY IND SYS, OPS CHKD GOOD IAW AMM 28-41-00-715-199-002, SELF TEST OF FQIS PROCESSOR OPS CHKD GOOD IAW AMM 28-41-00-715-082-002. IF FAULT RETURNS SUGGEST TANK ENTRY FOR HARNESS TROUBLESHOOTING.