Loss of the FCDC 1 BUS 6 Signal for the ELAC 2

TASK 27-93-00-810-914-A
Loss of the FCDC 1 BUS 6 Signal for the ELAC 2

1. Possible Causes

ELAC-2 [2CE2]
FCDC-1 [3CE1]
wiring of the DGI 12 signal from the ELAC 2 (2CE2) MON part to the FCDC 1 (3CE1)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC
ASM 279502
AMM 27-95-34-000-001	Removal of the FCDC
AMM 27-95-34-400-001	Installation of the FCDC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-93-00-740-156-A

A. Test
(1) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.

4. Fault Isolation
Subtask 27-93-00-810-152-A

A. If the BITE test gives the maintenance message:
ELAC2-MON OR BUS 6 FROM FCDC1
(1) Replace the ELAC-2 [2CE2] AMM 27-93-34-000-001 and AMM 27-93-34-400-001.
(2) If the fault continues:

Replace the FCDC-1 [3CE1] AMM 27-95-34-000-001 and AMM 27-95-34-400-001.

(3) If the fault continues:

Do a check and repair the wiring of the DGI 12 signal from the ELAC 2 (2CE2) MON part to the FCDC 1 (3CE1) ASM 279502.

Subtask 27-93-00-740-157-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:28:05 UTC