DOC AIRBUS | TSM A320FLoss of the Control Data Input Bus 2 of the GPWC
TASK 34-48-00-810-837-A
Loss of the Control Data Input Bus 2 of the GPWC
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-48-00-740-086-A 4. Fault Isolation
Subtask 34-48-00-810-101-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:33:17 UTC
Loss of the Control Data Input Bus 2 of the GPWC
1. Possible Causes
- GPWC [1WZ]
- wiring of the FCU 2 DATA INPUT bus from the GPWC to the first terminal block
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 34-48-00-740-002 | BITE Test of the GPWS |
| ASM 344802 | |
| AMM 34-48-34-000-001 | Removal of the GPWC |
| AMM 34-48-34-400-001 | Installation of the GPWC |
Subtask 34-48-00-740-086-A 4. Fault Isolation
Subtask 34-48-00-810-101-A ** ON A/C NOT FOR ALL
A. If the BITE test gives the maintenance message:
FCU (3CA) BUS CP-R/GPWC (1WZ)
Subtask 34-48-00-810-101-D ** ON A/C NOT FOR ALL FCU (3CA) BUS CP-R/GPWC (1WZ)
- replace the GPWC [1WZ] AMM 34-48-34-000-001 and AMM 34-48-34-400-001.
- do a check and repair the wiring of the FCU 2 DATA INPUT bus from the GPWC to the first terminal block : for pins AA/9C, 9D of the GPWC ASM 344802.
A. If the BITE test gives the maintenance message:
FCU (2CA) BUS CP-R/GPWC (1WZ)
Subtask 34-48-00-740-087-A FCU (2CA) BUS CP-R/GPWC (1WZ)
- replace the GPWC [1WZ] AMM 34-48-34-000-001 and AMM 34-48-34-400-001.
- do a check and repair the wiring of the FCU 2 DATA INPUT bus from the GPWC to the first terminal block : for pins AA/9C, 9D of the GPWC ASM 344802.
B. Do the test given in Para. 3.