Loss of the ADR 2 BUS 2 Output Identified by the EFCS 1

TASK 34-13-00-810-872-A
Loss of the ADR 2 BUS 2 Output Identified by the EFCS 1

1. Possible Causes

ADIRU-2 [1FP2]
wiring of the ADR OUTPUT BUS 2 bus from the ADIRU 2 (1FP2) to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
ASM 341301

3. Fault Confirmation
Subtask 34-13-00-740-169-A

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

4. Fault Isolation
Subtask 34-13-00-810-121-A

A. If the test gives the maintenance message ADR2 BUS 2:

(1) If the fault continues:

do a check and repair the wiring of the ADR OUTPUT BUS 2 bus from the ADIRU 2 (1FP2) to the first terminal block ASM 341301.

Subtask 34-13-00-740-170-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:26 UTC