DOC AIRBUS | TSM A320FNosewheel Steering Position Order Disagree
TASK 32-51-00-810-818-A
Nosewheel Steering Position Order Disagree
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 32-51-00-740-080-A
Subtask 32-51-00-810-069-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:31:49 UTC
Nosewheel Steering Position Order Disagree
1. Possible Causes
- BSCU [10GG]
- SENSOR-N/W STRG FDBK,CTL CHAN [3GC]
- SENSOR-N/W STRG FDBK,MONITORING CHAN [4GC]
wiring from the BSCU (10GG)to the sensor (3GC) wiring from the BSCU (10GG) to the sensor (4GC)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| 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 32-46-00-740-001 | BITE Test of the BSCU |
| AMM 32-46-00-740-004 | BITE Test of the BSCU - Steering Data |
| AMM 32-51-00-820-002 | Adjustment of the N/WS Zero Position with Adjusting Tool F26630200 for A/C with N/WS Feedback Sensor-Box P/N C24763000, NLG Centering Cams as Reference |
| ASM 325101 | |
| AMM 32-51-19-000-001 | Removal of the Nose Wheel Steering Feedback Sensor P/N C24763000 |
| AMM 32-51-19-400-001 | Installation of the Nose Wheel Steering Feedback Sensor P/N C24763000 |
| TSM TASK 32-42-00-03 | NORMAL BRAKING - TASK SUPPORTING DATA |
Subtask 32-51-00-740-080-A
A. Test
(1) Do a reset of the BSCU with the A/SKID AND NOSE WHEEL switch (5GG).
(2) Do the BITE test of the BSCU AMM 32-46-00-740-001.
(3) Read the TROUBLE SHOOTING DATA of the BSCU on the MCDU32-42-00-03 TSM TASK 32-42-00-03 and do the BITE test of the BSCU (steering data) AMM 32-46-00-740-004.
4. Fault Isolation(1) Do a reset of the BSCU with the A/SKID AND NOSE WHEEL switch (5GG).
(2) Do the BITE test of the BSCU AMM 32-46-00-740-001.
(3) Read the TROUBLE SHOOTING DATA of the BSCU on the MCDU
Subtask 32-51-00-810-069-A ** ON A/C NOT FOR ALL
A. If the tests give the maintenance message BSCU or STEERING FEEDBACK SENSOR:
Subtask 32-51-00-810-069-B ** ON A/C NOT FOR ALL - replace the BSCU [10GG] AMM 32-42-34-000-001 and AMM 32-42-34-400-001.
- replace the SENSOR-N/W STRG FDBK,CTL CHAN [3GC] AMM 32-51-19-000-001 and AMM 32-51-19-400-001.
- replace the SENSOR-N/W STRG FDBK,MONITORING CHAN [4GC] AMM 32-51-19-000-001 and AMM 32-51-19-400-001.
- do a check and repair the
wiring from the BSCU (10GG)to the sensor (3GC) pins A/A, B, C, D, E, F to pins AB/15E, 15F, 8E, 8F, 9F, 9E ASM 325101.
- do a check and repair the
wiring from the BSCU (10GG) to the sensor (4GC) pins A/A, B, C, D, E, F to pins AB/14E, 14F, 10E, 10F, 11F, 11E ASM 325101
- do the adjustment of the Nose Wheel Steering gearbox AMM 32-51-00-820-002.
A. If the tests give the maintenance message BSCU(10GG)/STEERING FDBK SENSORS (3GC/4GC):
Subtask 32-51-00-740-081-A - replace the BSCU [10GG] AMM 32-42-34-000-001 and AMM 32-42-34-400-001.
- replace the SENSOR-N/W STRG FDBK,CTL CHAN [3GC] AMM 32-51-19-000-001 and AMM 32-51-19-400-001.
- replace the SENSOR-N/W STRG FDBK,MONITORING CHAN [4GC] AMM 32-51-19-000-001 and AMM 32-51-19-400-001.
- do a check and repair the
wiring from the BSCU (10GG)to the sensor (3GC) pins A/A, B, C, D, E, F to pins AB/15E, 15F, 8E, 8F, 9F, 9E ASM 325101.
- do a check and repair the
wiring from the BSCU (10GG) to the sensor (4GC) pins A/A, B, C, D, E, F to pins AB/14E, 14F, 10E, 10F, 11F, 11E ASM 325101
- do the adjustment of the Nose Wheel Steering gearbox AMM 32-51-00-820-002.
B. Test
Do the test given in Para. 3.A.
Do the test given in Para. 3.A.