Loss of all Engine 1 Identification Connector Data

TASK 73-20-00-810-957-A
Loss of all Engine 1 Identification Connector Data

1. Possible Causes

J14 engine identification connector
ECU [4000KS]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 73-21-60-000-001	Removal of the Electronic Control Unit (ECU)
AMM 73-21-60-400-001	Installation of the Electronic Control Unit (ECU)
AMM 73-21-60-740-006	Read the LRU Identification Report and the Thrust Reverser Shut-off Valve Status
AMM 73-21-90-000-002	Removal of the Engine Identification Connector
AMM 73-21-90-400-002	Installation of the Engine Identification Connector
AMM 73-29-00-710-040	Operational Test of the FADEC on the ground (with Engine Motoring)

3. Fault Confirmation
Subtask 73-20-00-710-298-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the operational test of the FADEC 1B on the ground (with engine non motoring) AMM 73-29-00-710-040.
(2) Do the LRU identification through the MCDU AMM 73-21-60-740-006 and check that the data corresponds to the engine configuration.

4. Fault Isolation
Subtask 73-20-00-810-258-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message J14, ECU (ENG IDENT):

do a check for the loose or missing identification connector at the ECU1 connector J14 receptacle.

(1) If the Service Bulletin 72-0340 is not incorporated, and if the fault continues:

reset the ECU1 (4000KS) as follows:

(a) On the panel 115VU, set the ENG/MASTER 1 control switch (3KC) to OFF.
(b) After 30 seconds, set the ENG/MASTER 1 control switch (3KC) to ON.
1 If the fault continues:

replace the J14 engine identification connector AMM 73-21-90-000-002 and AMM 73-21-90-400-002.

a If the fault continues:

replace the ECU [4000KS] AMM 73-21-60-000-001 and AMM 73-21-60-400-001.

(2) If the Service Bulletin 72-0340 is incorporated, and if the fault continues:

read the LRU IDENTIFICATION report of the engine 1 AMM 73-21-60-740-006,
check that the engine identification connector installed on the engine meets the specific engine configuration (rating, N1 trim, system configuration, etc...).

(a) If the rating identified on the LRU IDENTIFICATION report is incorrect:

replace the J14 engine identification connector AMM 73-21-90-000-002 and AMM 73-21-90-400-002.

(b) If other parameters than the rating identified on the LRU IDENTIFICATION report is (are) incorrect:

check for correct programming of the J14 engine identification connector AMM 73-21-90-000-002 and AMM 73-21-90-400-002.

1 If the fault continues:

replace the J14 engine identification connector AMM 73-21-90-000-002 and AMM 73-21-90-400-002.

a If the fault continues:

replace the ECU [4000KS] AMM 73-21-60-000-001 and AMM 73-21-60-400-001.

Subtask 73-20-00-710-299-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:35:30 UTC