No data from CFDIU - DIR 2

TASK 23-73-00-810-944-A
No data from CFDIU - DIR 2

1. Possible Causes

wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 31-32-00-810-880-A	Failure of the CFDIU
AMM 23-73-00-740-003	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the PTP
AMM 23-73-00-740-005	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
ASM 237303
AMM 23-73-34-000-001	Removal of the CIDS Director
AMM 23-73-34-400-001	Installation of the CIDS Director
AMM 31-32-34-000-001	Removal of the CFDIU
AMM 31-32-34-400-001	Installation of the CFDIU

3. Fault Confirmation
Subtask 23-73-00-710-401-A ** ON A/C NOT FOR ALL

A. Do the bite test of the CIDS AMM 23-73-00-740-003.

Subtask 23-73-00-710-401-B ** ON A/C NOT FOR ALL

A. Test
(1) Do the CIDS Interface and Power-Up Test via the CFDS AMM 23-73-00-740-005.

4. Fault Isolation
Subtask 23-73-00-810-786-A

A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.

Subtask 23-73-00-810-787-A ** ON A/C NOT FOR ALL

B. If the test gives the maintenance message NO CFDIU DATA

on the ECAM control panel:
select the ECAM STATUS page on the lower ECAM display.

(1) If the ECAM STATUS page shows the message CFDIU:
(a) Do the related trouble shooting procedure (Ref. TSM TASK 31-32-00-810-880).
(2) If the ECAM STATUS page does not show the message CFDIU:
(a) Remove the DIR-CIDS, 2 (102RH) AMM 23-73-34-000-001.
(b) Remove the CFDIU 1TW AMM 31-32-34-000-001.
(c) Do a check of the wiring between:

CFDIU 1TW connector AB pin 3D and DIR-CIDS, 2 (102RH) connector AA pin A11
CFDIU 1TW connector AB pin 3E and DIR-CIDS, 2 (102RH) connector AA pin B11
CFDIU 1TW connector AB pin 11D and DIR-CIDS, 2 (102RH) connector AA pin D11
CFDIU 1TW connector AB pin 11E and DIR-CIDS, 2 (102RH) connector AA pin E11
ASM 237303.

(d) Install the removed DIR-CIDS, 2 (102RH) AMM 23-73-34-400-001.
(e) Install the removed CFDIU 1TW AMM 31-32-34-400-001.

Subtask 23-73-00-810-787-B ** ON A/C NOT FOR ALL

B. If the test gives the maintenance message CFDIU (1TW)/ DIR2 (102RH)

on the ECAM control panel:
Select the ECAM STATUS page on the lower ECAM display.

(1) If the ECAM STATUS page shows the message CFDIU:
(a) Do the related trouble shooting procedure (Ref. TSM TASK 31-32-00-810-880).
(2) If the ECAM STATUS page does not show the messages CFDIU:
(a) Remove the DIR-CIDS, 2 (102RH) AMM 23-73-34-000-001.
(b) Remove the CFDIU 1TW AMM 31-32-34-000-001.
(c) Do a check of the wiring between:

CFDIU 1TW connector AB pin 3F and DIR-CIDS, 2 (102RH) connector AA pin A11
CFDIU 1TW connector AB pin 3G and DIR-CIDS, 2 (102RH) connector AA pin B11
CFDIU 1TW connector AB pin 11F and DIR-CIDS, 2 (102RH) connector AA pin D11
CFDIU 1TW connector AB pin 11G and DIR-CIDS, 2 (102RH) connector AA pin E11
ASM 237303.

(d) Install the removed DIR-CIDS, 2 (102RH) AMM 23-73-34-400-001.
(e) Install the removed CFDIU 1TW AMM 31-32-34-400-001.

5. Close-up
Subtask 23-73-00-710-402-A

A. Do the test as given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:26:00 UTC