_______ 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.
(a) If there is:
- approved test equipment available, go to Step (3)
- no approved test equipment available, go to Step (6).
(3) Get access to the tank wall connector 4039VC1(2)-A (for the wing tank harness 13QT1(2)) (Ref. AMM TASK 28-42-43-000-008).
(4) Disconnect the free connector 4039VC1(2)-A from the receptacle 4039VC1(2).
(5) Do a resistance check of the sensor 30QJ1(2) at the tank wall connector 4039VC1(2) between pins <B and F (Ref. AWM 28-46-11) ((Ref. AWM 28-46-12)). Make sure the resistance is between 330 and 480 ohms. If there is:
- continuity as specified above, go to Step (6)
- no continuity as specified above (resistance check out of range), go to Step (8).
NOTE : The sensor status (wet or dry) and fuel/air temperature will
____ have an effect on the resistance value.
(6) Replace the FLSCU-1 (7QJ) (FLSCU-2 (9QJ)) (Ref. AMM TASK 28-46-34-000-001) and (Ref. AMM TASK 28-46-34-400-001).
(7) If the fault continues:
(a) Get access to the tank wall connector 4039VC1(2)-A (for the wing tank harness 13QT1(2)) (Ref. AMM TASK 28-42-43-000-008).
(b) Disconnect the free connector 4039VC1(2)-A from the receptacle 4039VC1(2).
「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 : 001-049, 051-099, 101-149, 151-199, ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page A210
201-299, 401-499, Aug 01/05 CES
(c) Do a check (Ref. AWM 28-46-11), and (Ref. AWM 28-46-12) of the aircraft wiring (sensor input line - H) between the FLSCU-1(2) rack connector AB, pin 7D and the tank wall free connector 4039VC1(2)-A, pin <B.
(d) Do a check (Ref. AWM 28-46-11), and (Ref. AWM 28-46-12) of the aircraft wiring (sensor input line - L) between the FLSCU-1(2) rack connector AB, pin 7C and the tank wall free connector 4039VC1(2)-A, pin F.
(e) Do a check (Ref. AWM 28-46-11) of the aircraft wiring (FLSCU-1 BITE 4 test command line) between the FLSCU-1 rack connector AA, pin 15D and the FQIC rack connector AB, pin 7K or ((Ref. AWM 28-46-12) of the aircraft wiring (FLSCU-2 BITE 4 test command line) between the FLSCU-2 rack connector AA, pin 15D and the FQIC rack connector AB, pin 9H).
(f) Do a check (Ref. AWM 28-46-11) of the aircraft wiring (FLSCU-1 T2 output line) between the FLSCU-1 rack connector AB, pin 4D and the FQIC rack connector AB, pin 5K or ((Ref. AWM 28-46-12) of the aircraft wiring (FLSCU-2 T2 output line) between the FLSCU-2 rack connector AB, pin 4D and the FQIC rack connector AB, pin 15K).
(g) Repair all the unserviceable wiring and connectors (Ref. ESPM 20-00-00).
(h) Connect the free connector 4039VC1(2)-A to the receptacle 4039VC1(2).
(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-CHAN A, L WING TK INR (13QT1) and HARNESS-CHAN A, L WING TK OUTR (15QT1) (HARNESS-CHAN A, R WING TK INR (13QT2) and HARNESS-CHAN A, R WING TK OUTR (15QT2)) (Ref. AWM 28-46-11) ((Ref. AWM 28-46-12)) and replace, if necessary (Ref. AMM TASK 28-42-43-000-006) and (Ref. AMM TASK 28-42-43-400-006) or (Ref. AMM TASK 28-42-43-000-003) and (Ref. AMM TASK 28-42-43-400-003).
(c) If the harnesses 13QT1(2) and 15QT1(2) are serviceable, replace the SENSOR-TEMP, LEFT WING TK OUTER CHANNEL A (30QJ1) ( SENSOR-TEMP, RIGHT WING TK OUTER CHANNEL A (30QJ2)) (Ref. AMM TASK 28-46-17-000-002) and (Ref. AMM TASK 28-46-17-400-002).
「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 : 001-049, 051-099, 101-149, 151-199, ∞∞28-46-00∞∞∞∞∞∞∞∞∞∞Page A211
201-299, 401-499, Aug 01/05 CES
**ON A/C ALL
TASK 28-46-00-810-815
L(R) IDG Shut Off Sensor 38QJ1(2)
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-1 (7QJ)
