(1) Repeat the fault isolation procedure if the fault continues.
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TASK 73-25-00-810-903
Loss of the GMT Data on the ARINC Bus from the EIU to the FADEC on Engine 1
1. Possible Causes
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- EIU-1 (1KS1)
- harness J3 from the EIU (1KS1) to the ECU (4000KS)
- wiring from CFDIU (1TW) to the EIU-1 (1KS1)
- CFDIU (1TW)
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
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. Do the operational test of the FADEC 1A 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 CFDIU, EIU (GMT), J3*:
- do a check for open or short to ground at pins AB/5A, 5C to pins J3/22, 23 of the harness J3 from the EIU (1KS1) to the ECU (4000KS) and at pins AA/11F, 11G to pins AA/11C, 11B of the wiring from CFDIU (1TW) to the EIU-1 (1KS1) (Ref. ASM 73-25/06).
(1) If one of these wirings is not correct:
- repair the defective harness J3 or the wiring.
(2) If these wirings are 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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- replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
(4) 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. Do the test given in Para. 3.A.
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TASK 73-25-00-810-904
Loss of the GMT Data on the ARINC Bus from the EIU to the FADEC on Engine 2
1. Possible Causes
_______________
- EIU-2 (1KS2)
- harness J3 from the EIU-2 (1KS2) to the ECU (4000KS)
- wiring from CFDIU (1TW) to the EIU-2 (1KS2)
- CFDIU (1TW)
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
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. Do the operational test of the FADEC 2A 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 CFDIU, EIU (GMT), J3*:
- do a check for open or short to ground at pins AB/5A, 5C to pins J3/22, 23 of the harness J3 from the EIU-2 (1KS2) to the ECU (4000KS) and at pins AB/11D, 11E to pins A/11C, 11B of the wiring from CFDIU (1TW) to the EIU-2 (1KS2) (Ref. ASM 73-25/06).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 發動機燃油和控制 2(61)
