Loss of the ELAC 1 BUS Signal for the ELAC 2

TASK 27-93-00-810-904-A
Loss of the ELAC 1 BUS Signal for the ELAC 2

1. Possible Causes

ELAC-2 [2CE2]
ELAC-1 [2CE1]
wiring of the DGO 05 signal from the ELAC 1 (2CE1) COM part to the ELAC 2 (2CE2)
wiring of the DGO 05 signal from the ELAC 1 (2CE1) MON part to the ELAC 2 (2CE2)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 279250
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-93-00-740-136-A

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

4. Fault Isolation
Subtask 27-93-00-810-142-A

A. If the BITE test gives the maintenance message:
ELAC2 OR BUS FROM ELAC1

(1) If the fault continues:

(2) If the fault continues:
(a) Do a check of the wiring of the DGO 05 signal from the ELAC 1 (2CE1) COM part to the ELAC 2 (2CE2) ASM 279250.

(b) Do a check and repair the wiring of the DGO 05 signal from the ELAC 1 (2CE1) MON part to the ELAC 2 (2CE2) ASM 279250.

Subtask 27-93-00-740-137-A

B. Do the test given in Para. 3.

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