DOC AIRBUS | TSM A320FFailure of the ADR3 Baro-Source Pin-Programming
TASK 34-13-00-810-980-A
Failure of the ADR3 Baro-Source Pin-Programming
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-13-00-740-321-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-00-810-229-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:32:32 UTC
Failure of the ADR3 Baro-Source Pin-Programming
1. Possible Causes
- ADIRU-3 [1FP3]
- aircraft wiring
- wiring BARO PORT A SELECT pin programming of the ADIRU3
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 341203 | |
| AMM 34-12-34-000-001 | Removal of the ADIRU |
| AMM 34-12-34-400-001 | Installation of the ADIRU |
| AMM 34-13-00-740-002 | INTERFACE TEST of the ADR |
Subtask 34-13-00-740-321-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-00-810-229-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message WRG: BARO SOURCE SELECT PIN PROG:
Subtask 34-13-00-740-322-A ** ON A/C NOT FOR ALL - remove the ADIRU-3 [1FP3] AMM 34-12-34-000-001
- do a check of the wiring and make sure that there is a ground signal at pin AA/7G and an open circuit at pin AA/7F on the rack connector.
- repair the aircraft wiring : defective pin
- install the ADIRU3.
- do a check of pin AA/3C on the rack connector
- compare the state of the pin with the BARO PORT A SELECT pin programming given in the ASM ASM 341203.
- install a new ADIRU3 AMM 34-12-34-400-001.
- repair the wiring BARO PORT A SELECT pin programming of the ADIRU3 : pin AA/3C.
- install the ADIRU3.
B. Do the test given in Para. 3.