DOC AIRBUS | TSM A320FFailure of the CFDIU Detected by the ILS 2
TASK 31-32-00-810-866-A
Failure of the CFDIU Detected by the ILS 2
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-32-00-865-114-A
Subtask 31-32-00-810-115-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:29:53 UTC
Failure of the CFDIU Detected by the ILS 2
1. Possible Causes
- CFDIU [1TW]
- wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 313203 | |
| AMM 31-32-34-000-001 | Removal of the CFDIU |
| AMM 31-32-34-400-001 | Installation of the CFDIU |
| AMM 34-36-00-740-002 | BITE Test of the ILS |
Subtask 31-32-00-865-114-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 31-32-00-740-176-A 4. Fault Isolation| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/ILS/2 | 1RT2 | K09 |
Subtask 31-32-00-810-115-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message ILS2 NO DATA FROM CFDIU:
Subtask 31-32-00-810-115-B ** ON A/C NOT FOR ALL - replace the CFDIU [1TW] , AMM 31-32-34-000-001 and AMM 31-32-34-400-001.
- do a check and repair the wiring from the CFDIU (1TW) pins AB/2H, 2J to the first terminal block , ASM 313203.
A. If the test gives the maintenance message
CFDIU(1TW)/ILS2(2RT2) or CMC1(1TM1)/ILS2(1RT2):
Subtask 31-32-00-740-177-A CFDIU(1TW)/ILS2(2RT2) or CMC1(1TM1)/ILS2(1RT2):
- replace the CFDIU [1TW] , AMM 31-32-34-000-001 and AMM 31-32-34-400-001.
- do a check and repair the wiring from the CFDIU (1TW) pins AB/2H, 2J to the first terminal block , ASM 313203.
B. Do the test given in Para. 3.B.