- do a check and repair the wiring from the EIU 1 (1KS1) pins AB/5H, 5K to the first terminal block (Ref. ASM 73-25/06).
(3) 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.
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Loss of the Output B Bus on EIU 1
1. Possible Causes
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- EIU-1 (1KS1)
- wiring from the EIU 1 (1KS1) pins AB/5H, 5K to the first terminal block
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-50-00-710-001 Ground Scanning of the Central Warning System 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) ASM 73-25/05 ASM 73-25/06
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU ENGINE/1/FADEC A/AND EIU 1 2KS1 A04 121VU ENGINE/ENG1/FADEC B/AND EIU 1 4KS1 R41
B. Do the operational test of the Central Warning Systems (FWC) (Ref. AMM TASK 31-50-00-710-001).
4. Fault Isolation
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A. If the test gives the maintenance message FWC2 : NO DATA FROM EIU1:
- do a check for 28VDC at EIU 1 pins AC/9, 11.
(1) If there is 28VDC:
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040) (Ref. ASM 73-25/05).
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- do a check and repair the wiring from the EIU 1 (1KS1) pins AB/5H, 5K to the first terminal block (Ref. ASM 73-25/06).
(3) 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.
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TASK 73-20-00-810-845
Loss of the Output B Bus on EIU 1
1. Possible Causes
_______________
- EIU-1 (1KS1)
- wiring from the EIU 1 (1KS1) pins AB/5H, 5K to the first terminal block
- ECU (4000KS)
2. Job Set-up Information
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机燃油和控制 1(75)
