DOC AIRBUS | TSM A320FLoss of the CFDIU Input on the GPSSU2
TASK 34-58-00-810-824-A
Loss of the CFDIU Input on the GPSSU2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 34-58-00-740-096-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-58-00-810-073-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:33:34 UTC
Loss of the CFDIU Input on the GPSSU2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-32-34-000-001 | Removal of the CFDIU |
| AMM 31-32-34-400-001 | Installation of the CFDIU |
| AMM 34-58-00-740-001 | BITE Test of the GPS |
| ASM 345801 | |
| AMM 34-58-31-000-001 | Removal of the GPSSU |
| AMM 34-58-31-400-001 | Installation of the GPSSU |
Subtask 34-58-00-740-096-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-58-00-810-073-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message CFDIU (1TW)/GPSSU2 (1SN2):
Subtask 34-58-00-740-097-A ** ON A/C NOT FOR ALL - replace the
[1SN2] AMM 34-58-31-000-001 and AMM 34-58-31-400-001.
- replace the CFDIU [1TW] AMM 31-32-34-000-001 and AMM 31-32-34-400-001.
- do a check and repair the wiring between the CFDIU and the GPSSU2 : pins AB/2H, 2J and A/31, 32 ASM 345801.
B. Do the test given in Para. 3.