Loss of the ADR3 BUS2 Interface with the EFCS1 Identified by the EFCS1

TASK 34-13-81-810-808-A
Loss of the ADR3 BUS2 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 341120

3. Fault Confirmation
Subtask 34-13-81-740-064-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 34-13-81-810-057-A

A. If the test gives the maintenance message ADR3 BUS 2:

do a check and repair the wiring between the terminal blocks 1860VT and 1840VT : between pins 27T, 27C and 11A, 11D AWM 341120.

Subtask 34-13-81-740-065-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:34 UTC