DOC AIRBUS | TSM A320FLoss of the CFDIU Data Input Bus on the ADIRU3
TASK 34-14-00-810-871-A
Loss of the CFDIU Data Input Bus on the ADIRU3
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-14-00-740-181-A 4. Fault Isolation
Subtask 34-14-00-810-129-B
[Rev.8 from Aug 2018]
2026.04.04 04:32:47 UTC
Loss of the CFDIU Data Input Bus on the ADIRU3
1. Possible Causes
- ADIRU-3 [1FP3]
wiring of CFDIU INPUT bus from the ADIRU3 (1FP3) to the first terminal block
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 34-12-34-000-001 | Removal of the ADIRU |
| AMM 34-12-34-400-001 | Installation of the ADIRU |
| AMM 34-14-00-740-001 | Interface Test of the IR |
| ASM 341402 |
Subtask 34-14-00-740-181-A 4. Fault Isolation
Subtask 34-14-00-810-129-B
A. If the BITE test gives the maintenance message CFDIU (1TW)/ADIRU3 (1FP3):
Subtask 34-14-00-740-182-A - replace the ADIRU-3 [1FP3] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
- do a check and repair the
wiring of CFDIU INPUT bus from the ADIRU3 (1FP3) to the first terminal block ASM 341402.
B. Do the test given in Para. 3.