Loss of the Reception of the AP 2 ENGD Discrete Signal by the FMGC 1

TASK 22-11-00-810-823-A
Loss of the Reception of the AP 2 ENGD Discrete Signal by the FMGC 1

1. Possible Causes

FMGC-1 [1CA1]
wiring of the AP OPP ENGD MON OPP and AP OPP ENGD COM OPP discretes from the FMGC 1 (1CA1) to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 22-83-34-000-001	Removal of the FMGC
AMM 22-83-34-400-001	Installation of the FMGC
ASM 228503
AMM 22-96-00-710-001	Operational Test of the AFS

3. Fault Confirmation
Subtask 22-11-00-710-082-A

A. Test
(1) On the FCU, push the AP 2 pushbutton switch.
(2) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FMGC 1.

4. Fault Isolation
Subtask 22-11-00-810-074-B

A. If the test gives the maintenance message AFS: FMGC1/AP2 ENGD WIRG:

replace the FMGC-1 [1CA1] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.

(1) If the fault continues:

do a check and repair the wiring of the AP OPP ENGD MON OPP and AP OPP ENGD COM OPP discretes from the FMGC 1 (1CA1) to the first terminal block ASM 228503.

Subtask 22-11-00-710-083-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:07 UTC