Failure of the CSM/G Control Unit Detected by the CFDIU

TASK 24-24-00-810-809-A
Failure of the CSM/G Control Unit Detected by the CFDIU

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 242401
AMM 31-32-00-740-002	BITE Test of the Centralized Fault Display Interface Unit (CFDIU)
ASM 313206

3. Fault Confirmation
Subtask 24-24-00-740-050-A

A. Test
Do the BITE test of the CFDIU AMM 31-32-00-740-002.

4. Fault Isolation
Subtask 24-24-00-810-061-A

A. If the test gives the message GCU EMER:

do a check for other CFDS messages or upper ECAM DU warnings related to the AC emergency generation (CSM/G, GCU).

(1) If there are other messages or warnings:

(2) If there are no messages and no warnings:

do a check and repair the wiring between:
. pin A/W of the CSM/G control unit (1XE) and pin AA/4K of the CFDIU (1TW)
. pin A/V of the CSM/G control unit (1XE) and pin AB/4A of the CFDIU (1TW) ASM 242401 and ASM 313206.

Subtask 24-24-00-740-051-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:26:43 UTC