(2) Repeat the fault isolation procedure if the fault continues.

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 TASK 76-11-00-810-811
 Internal Failure of the ECU on Engine 1
 1. Possible Causes
_______________
 - ECU (4000KS)

 - DMU (1TV)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-36-34-000-001 Removal of the Data Management Unit (DMU) (1TV) AMM 31-36-34-400-001 Installation of the Data Management Unit (DMU) (1TV) AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU)(4000KS) AMM 73-21-60-400-001 Installation of the Electronic Control Unit
 (ECU)(4000KS) AMM 73-21-60-740-007 Correct Time Limited Faults (Non Asterisked) of the Engine Scheduled Maintenance Report AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring) ASM 73-25/10
 3. Fault Confirmation
__________________
 A. Do the operational test of the FADEC 1A and 1B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
 4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-105, 151-154, 201-207,
 A. If the ECAM Warning "THR LEVER FAULT" is not associated with failure messages TLA SNSR, J3, ECU and TLA SNSR, J4, ECU this is most likely indicating an internal failure of the ECU. In such a case this ECAM Warning is usually displayed with other engine related ECAM Warnings. This can be checked in the Post Flight Report (PFR) (Ref. AMM TASK 73-21-60-740-007).
 (1) If the test does not give the failure messages TLA SNSR, J3, ECU and TLA SNSR, J4, ECU:
 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
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 (a) If the fault repeats and is accompagned by failure message NO ECU 1(2) ADATA:
 - replace the DMU (1TV) (Ref. AMM TASK 31-36-34-000-001) and (Ref. AMM TASK 31-36-34-400-001).
 1 If the fault continues:
_
 - Do a continuity and insulation check of the wiring between the ECU (ARINC OUTPUT) connector J3 (pins 11 and 24) / connector J4 (pins 11 and 24) and FWC 1 and 2 (Ref. ASM 73-25/10).
 a if damage is found:
_
 - replace or repair wiring as required.
 b if nothing is found:
_
 - repeat the fault isolation procedure.
 (2) If the test gives the failure messages TLA SNSR, J3, ECU and/or TLA SNSR, J4, ECU:
 - Do the related troubleshooting procedure.
R **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499,
 A. If the ECAM Warning "THR LEVER FAULT" is not associated with failure messages TLA SNSR, J3, ECU and TLA SNSR, J4, ECU this is most likely indicating an internal failure of the ECU. In such a case this ECAM Warning is usually displayed with other engine related ECAM Warnings. This can be checked in the Post Flight Report (PFR) (Ref. AMM TASK 73-21-60-740-007).
 (1) If the test does not give the failure messages TLA SNSR, J3, ECU and TLA SNSR, J4, ECU:
 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 (a) If the fault repeats and is accompagned by failure message NO ECU 1(2) ADATA:
 - replace the DMU (1TV) (Ref. AMM TASK 31-36-34-000-001) and (Ref. AMM TASK 31-36-34-400-001).
 1 If the fault continues:
_
 - Do a continuity and insulation check of the wiring between the ECU (ARINC OUTPUT) connector J3 (pins 11 and 24) / connector J4 (pins 11 and 24) and FWC 1 and 2 (Ref. ASM 73-25/10).
 a if damage is found:
_
 - replace or repair wiring as required.
 b if nothing is found:
_
 - repeat the fault isolation procedure.
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