Loss of the ADR2 BUS3 Interface with the EFCS1 Identified by the EFCS1

TASK 34-13-81-810-806-A
Loss of the ADR2 BUS3 Interface with the EFCS1 Identified by the EFCS1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)
AWM 341122

3. Fault Confirmation
Subtask 34-13-81-740-060-A

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

4. Fault Isolation
Subtask 34-13-81-810-055-A

A. If the test gives the maintenance message ADR2 OR BUS 3 TO ELAC1:

do a check and repair the wiring between the terminal blocks 1851VT and 1831VT : between pins 4M, 3M and 2R, 1H AWM 341122.

Subtask 34-13-81-740-061-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:33 UTC