Loss of the LGCIU2 BUS1 for the SEC3

TASK 27-94-00-810-891-A
Loss of the LGCIU2 BUS1 for the SEC3

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 279255
AMM 27-94-34-000-001	Removal of the SEC
AMM 27-94-34-400-001	Installation of the SEC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-94-00-740-150-A

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

4. Fault Isolation
Subtask 27-94-00-810-128-B

A. If the BITE test gives the maintenance message:
LGCIU2 OR BUS1 TO SEC3

(1) If the fault continues:

do a check and repair the wiring from the LGCIU2 (5GA2) to the SEC3 (1CE3) ASM 279255.

Subtask 27-94-00-740-151-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:28:19 UTC