W DOC AIRBUS | TSM A320F

Nosewheel Steering Order Disagree

TASK 32-51-00-810-815-A
Nosewheel Steering Order Disagree

1. Possible Causes
  • BSCU [10GG]
  • XMTR UNIT-N/W STRG HANDWHEEL,CAPT [1GC]
  • XMTR UNIT-N/W STRG HANDWHEEL,F/O [2GC]
  • wiring from the BSCU (10GG) to the handwheel (1GC)
  • wiring from the BSCU (10GG) to the handwheel (2GC)
  • XDCR UNIT-PEDAL POS, L [25CE1]
  • XDCR UNIT-PEDAL POS, R [25CE2]
  • wiring from the ELAC 1 (2CE1) to the transducer units (25CE1,25CE2)
  • wiring from the ELAC 2 (2CE2) to the transducer units (25CE1,25CE2)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 27-92-15-000-001
Removal of the Pedal Position Transducer Unit
AMM 27-92-15-400-001
Installation of the Pedal Position Transducer Unit
ASM 279223
AMM 32-42-34-000-001
Removal of the Braking/Steering Control Unit (BSCU)
AMM 32-42-34-400-001
Installation of the Braking/Steering Control Unit (BSCU)
AMM 32-46-00-740-002
BITE Test of the BSCU - Ground Scanning
AMM 32-51-00-720-003
Functional Test of the Nose Wheel Steering with the Handwheel
AMM 32-51-00-720-004
Functional Test of the Nose Wheel Steering with the Pedals
ASM 325101
AMM 32-51-11-000-001
Removal of the Transmitter Unit - Nose-Wheel Steering Handwheel
AMM 32-51-11-400-001
Installation of the Transmitter Unit - Nose-Wheel Steering Handwheel
3. Fault Confirmation
Subtask 32-51-00-740-074-A
A. Test
   (1) Do the functional test of the Nose Wheel Steering with the handwheel AMM 32-51-00-720-003.
   (2) Do the functional test of the Nose Wheel Steering with the pedals AMM 32-51-00-720-004.
   (3) Do the ground scanning of the BSCU AMM 32-46-00-740-002.
4. Fault Isolation
Subtask 32-51-00-810-066-B ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message STEERING HANDWHEEL OR BSCU:
   (1) If the fault continues:
   (2) If the fault continues:
   (3) If the fault continues:
  • do a check and repair the wiring from the BSCU (10GG) to the handwheel (1GC) pins AA/15A, 9A, 11A, 1B, 10A, 12A, 15K, 9K, 11K, 1J, 10K, 12K to pins A/B, U, V, C, S, T, D, P, P, R, E, M, N ASM 325101.
  • do a check and repair the wiring from the BSCU (10GG) to the handwheel (2GC) pins AA/13A, 9A, 15A, 14A, 10A, 1B, 13K, 9K, 15K, 14K, 10K, 1J to pins A/V, U, B, T, S, C, R, P, D, N, M, E ASM 325101.
   (4) If the fault continues:
   (5) If the fault continues:
   (6) If the fault continues:
  • do a check and repair the wiring from the ELAC 1 (2CE1) to the transducer units (25CE1,25CE2) ASM 279223.
  • do a check and repair the wiring from the ELAC 2 (2CE2) to the transducer units (25CE1,25CE2) ASM 279223.
Subtask 32-51-00-810-066-C ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message BSCU (10GG)/STEERING HANDWHEELS (1GC/2GC) or BSCU(10GG)/STEERING HANDWHEELS(1GC/2GC) SPLY:
   (1) If the fault continues:
   (2) If the fault continues:
   (3) If the fault continues:
  • do a check and repair the wiring from the BSCU (10GG) to the handwheel (1GC) pins AA/15A, 9A, 11A, 1B, 10A, 12A, 15K, 9K, 11K, 1J, 10K, 12K to pins A/B, U, V, C, S, T, D, P, P, R, E, M, N ASM 325101.
  • do a check and repair the wiring from the BSCU (10GG) to the handwheel (2GC) pins AA/13A, 9A, 15A, 14A, 10A, 1B, 13K, 9K, 15K, 14K, 10K, 1J to pins A/V, U, B, T, S, C, R, P, D, N, M, E ASM 325101.
   (4) If the fault continues:
   (5) If the fault continues:
   (6) If the fault continues:
  • do a check and repair the wiring from the ELAC 1 (2CE1) to the transducer units (25CE1,25CE2) ASM 279223.
  • do a check and repair the wiring from the ELAC 2 (2CE2) to the transducer units (25CE1,25CE2) ASM 279223.
Subtask 32-51-00-740-075-A
B. Test
  • do the test given in Para. 3.A.
[Rev.8 from Aug 2018] 2026.04.04 04:31:48 UTC
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