Loss of the FCDC 1 BUS 3 Signal for the ELAC 1

TASK 27-93-00-810-916-A
Loss of the FCDC 1 BUS 3 Signal for the ELAC 1

1. Possible Causes

ELAC-1 [2CE1]
wiring of the DGI 12 signal from the ELAC 1 (2CE1) COM part to the first terminal block

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 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-93-00-740-160-A

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

4. Fault Isolation
Subtask 27-93-00-810-154-A

A. If the BITE test gives the maintenance message:
ELAC1 MON OR BUS3 FROM FCDC1

(1) If the fault continues:

do a check and repair the wiring of the DGI 12 signal from the ELAC 1 (2CE1) COM part to the first terminal block ASM 279502.

Subtask 27-93-00-740-161-A

B. Do the test given in Para. 3.

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