3. Fault Confirmation
__________________
A. Test
(1) Not applicable.
4. Fault Isolation
_______________
A. Replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(1) If the fault continues:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
B. No additional maintenance action is required if the fault is not
confirmed.
(1) Repeat the fault isolation procedure if the fault continues.
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ECES TASK 73-25-00-810-937 Loss of Data on the ARINC Bus from the EIU to the FADEC on Engine 2
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1. Possible Causes
_______________
- EIU-2 (1KS2)
- 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 73-25-34-000-040 Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU)
3. Fault Confirmation
__________________
A. Test
(1) Not applicable.
4. Fault Isolation
_______________
A. Replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(1) If the fault continues:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
B. No additional maintenance action is required if the fault is not
confirmed.
(1) Repeat the fault isolation procedure if the fault continues.
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TASK 73-25-00-810-938
Loss of Data on the ARINC Bus from the EIU to the FADEC on Engine 1
1. Possible Causes
_______________
- EIU-1 (1KS1)
- harness J3 between the EIU (1KS1) and the ECU (4000KS)
- CONT-ZONE TEMPERATURE (8HK)
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 21-63-34-000-001 Removal of the Zone Controller (8HK)
AMM 21-63-34-400-001 Installation of the Zone Controller (8HK)
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 73-25-34-000-040 Removal of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring) ASM 73-25/06
3. Fault Confirmation
__________________
A. Test Do the operational test of the FADEC 1B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
_______________
A. If the test gives the maintenance message FCU, EIU (034), J3:
- do a check for open or short to ground of the harness J3 between the EIU (1KS1) and the ECU (4000KS) pins AB/5A, 5C to pins J3/22, 23 (Ref. ASM 73-25/06).
(1) If the wiring is not correct:
- repair the above wiring.
(2) If the wiring is correct:
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
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