DOC AIRBUS | TSM A320FLoss of Data on the Bus from the EIU 1 to FADEC 1
1. Possible Causes
· EIU-1 ( 1KS1 )
· wiring from the EIU 1 (1KS1) to the EEC ENG 1 (4000KS)
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. ASM 73-25-06
Ref. AMM 73-25-34-000-041 Removal of the Engine Interface Unit (EIU)
Ref. AMM 73-25-34-400-041 Installation of the Engine Interface Unit (EIU)
Ref. AMM 73-25-34-710-042 Operational Test of the EIU with the CFDS
3. Fault Confirmation
Subtask 73-25-00-710-096-A
A. Test
(1) Do the operational test of the EIU 1 with the CFDS Ref. AMM 73-25-34-710-042 .
4. Fault Isolation
Subtask 73-25-00-810-073-A
A. If the operational test gives the maintenance message CHECK EIU1 ARINC OUTPUT CIRCUIT TO
FADEC OR EIU1:
· replace the EIU-1 ( 1KS1 ) , Ref. AMM 73-25-34-000-041 and Ref. AMM 73-25-34-400-041 .
(1) If the fault continues:
· do a check and repair:
the wiring from the EIU 1 (1KS1) to the EEC ENG 1 (4000KS) pins AB/5A, 5C to
pin J1/P, N
the wiring from the EIU 1 (1KS1) to the EEC ENG 1 (4000KS) pins AB/5A, 5C to
pins J7/P, N
Ref. ASM 73-25-06.
Subtask 73-25-00-710-097-A
B. Do the test given in Para. 3. [Rev.6 from Feb 2017] 2026.04.04 04:36:22 UTC