What was found
RIGHT WING FUEL QTY IS BLANK. GROUNDED - YES. PERFORMED TROUBLESHOOTING PER B737-800 FIM 28-41 TASK 810. RESET CB A5 & A6, NO GOOD, #2 FUEL TANK QTY DISPLAY INOP. PERFORMED FQIS BITE TEST AND FOUND TEST FAILED WITH MAINTENANCE MESSAGE 28-41115 ARINC OUTPUT BUS FAILED. FOUND ALL LOAD SELECT INDICATORS ON REFUEL ACCESS PANEL INOP AND ALL DISPLAY "ARINC". REF FIM 28-21 TASK 802 FOUND GOOD VOLTAGE AT CONNNECTOR D11320, PINS 24 & 19, AND 24 & 23 W/28V. VERIFIED FUELING IND TEST SWITCH GOOD AT CONNECTOR D11320, PINS 2 & 19, AND 2 & 23 W/NO CONTINUITY. FOUND OPEN CIRCUIT AT PINS 2 & 19 OF CONNECTOR D11320. REMOVED AND REPLACED FUEL QUANTITY PROCESSOR UNIT IAW B737-800 AMM 28-41-81/401. OPS TEST GOOD, FUEL QTY. NOW DISPLAYS ON REFUEL PANEL AND DEU. PERFORMED AND PASSED FQIS BITE TEST.