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R (7) If the fault continues:
R (a) Get access to the tank wall connector 4039VC1(2)-A (for the wing R tank harness 57QT(58QT) (Ref. AMM TASK 28-42-43-000-008)
R (b) Disconnect the free connector 4039VC1(2)-A from the receptacle R 4039VC1(2).
R (c) Do a check (Ref. AWM 28-46-04) of the aircraft wiring (sensor input line - H) between the FLSCU-1(2) rack connector AB, pin 13A and the tank wall free connector 4039VC1(2)-A, pin L.
R (d) Do a check (Ref. AWM 28-46-04) of the aircraft wiring (sensor input line - L) between the FLSCU-1(2) rack connector AB, pin 13B and the tank wall free connector 4039VC1(2)-A, pin M.
R (e) Do a check (Ref. AWM 28-46-06) of the aircraft wiring (STD2/A321 identify line) between the FLSCU-1(2) rack connector AA, pin 6D, and the DC2 ground/earth point (614VG).
 NOTE : The level sense channel 8 (LS8) of FLSCU-1(2) is only used
____ on STD2/A321 aircraft fitted with a Simmonds FQIC.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page A222
 May 01/05 CES The fault message L(R) LO LEVEL SENSOR 40QJ1(2) will always be shown after the FLSS BITE test if the ground/earth (channel 8 enable) is not supplied to the FLSCU when in this configuration.

 (f) Do a check (Ref. AWM 28-46-06) of the aircraft wiring (FLSCU-1 BITE 2 test command line) between the FLSCU-1 rack connector AA, pin 15A and the FQIC rack connector AB, pin 14E or the (aircraft wiring (FLSCU-2 BITE 2 test command line) between the FLSCU-2 rack connector AA, pin 15A and the FQIC rack connector AB, pin 12E).

 (g) Do a check (Ref. AWM 28-46-06) of the aircraft wiring (FLSCU-1 LS8 output line) between the FLSCU-1 rack connector AB, pin 4A and the FQIC rack connector AC, pin 3J or the (aircraft wiring (FLSCU-2 LS8 output line) between the FLSCU-2 rack connector AB, pin 4A and the FQIC rack connector AC, pin 1H).

 (h) Repair all the unserviceable wiring and connectors (Ref. ESPM 20-00-00).

 (i) Do the test in Para. 3.A.

 (8) If the fault continues or if there is no continuity in Step (5):
 (a) Drain, open and vent the tank (Ref. AMM TASK 28-10-00-910-001) and (Ref. AMM TASK 28-10-00-910-002).

 (b) Do a wiring check of the HARNESS-LEFT WING TANK A (57QT), ( HARNESS-RIGHT WING, TANK A (58QT)) (Ref. AWM 28-46-04) and replace, if necessary (Ref. AMM TASK 28-42-43-000-005) and (Ref. AMM TASK 28-42-43-400-005).

 (c) If the harness is serviceable, replace the SENSOR-LOW LVL (1500KG), L WING TANK CHANNEL A (40QJ1) (SENSOR-LOW LVL (1500KG), R WING TANK CHANNEL A (40QJ2)) (Ref. AMM TASK 28-46-15-000-001) and (Ref. AMM TASK 28-46-15-400-009).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 301-399, ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page A223
 Aug 01/05R
 CES

 **ON A/C ALL

 TASK 28-46-00-810-817
 Center Tank High Level Dummy Sensor 6QJ
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST
_______ EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
 1. Possible Causes
_______________
 - FLSCU-2 (9QJ)

 - aircraft wiring

 - CTR TK HIGH LVL DUMMY SENSOR (6QJ)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-46-00-810-818 FLSCU1(2) 7QJ(9QJ)
 AMM 28-46-00-740-001 Functional (BITE) Test
 AMM 28-46-34-000-001 Removal of the Fuel-Level Sensing Control-Unit

 (FLSCU) (7QJ,9QJ) AMM 28-46-34-400-001 Installation of the Fuel-Level Sensing Control-Unit
 (FLSCU) (7QJ,9QJ)
 ASM 28-46/01
 AWM 28-46-01
 AWM 28-46-03

 3. Fault Confirmation
__________________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 A. Do the BITE test of the FLSS (Ref. AMM TASK 28-46-00-740-001).
 (1) Examine the FLSS STATUS Page.

 (2) If the page shows messages for one or more of the other sensors and/or the FLSCU-2, do (Ref. TASK 28-46-00-810-818).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page A224
　
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