- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
(2) If there is no 115VAC:
- do a check for 115VAC at the EIU-2 (1KS2) pin AB/14F.
(a) If there is 115VAC:
- 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 J1 harness between the EIU-2 (1KS2) and the ECU (4000KS).
(b) If there is no 115VAC:
- do a check of the wiring between the EIU-2 (1KS2) pin AB/14F and the circuit breaker (1JH).
1 If there is no continuity:
_ - repair the above wiring.
2 If there is continuity:
_
- replace the C/B-ENGINE/1 AND 2/IGN/SYS A (1JH).
(3) If the fault continues:
- make sure that there is no ground signal at the EIU-2 (1KS2) pin AA/5B.
B. If the circuit breaker (1JH) is open:
- close it.
(1) If the circuit breaker trips:
- remove the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and
- remove the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040).
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- do a check and repair the wiring for short to ground between the EIU-2 (1KS2) pin AB/14F and the circuit breaker (1JH).
(a) If the fault continues:
- replace the C/B-ENGINE/1 AND 2/IGN/SYS A (1JH).
(3) If the circuit breaker stays closed:
- install the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-400-040).
(a) If the circuit breaker trips:
- replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(b) If the circuit breaker stays closed:
- install the ECU (4000KS) (Ref. AMM TASK 73-21-60-400-001).
1 If the circuit breaker trips:
_
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
2 If the circuit breaker trips again:
_
- do a check and repair the wiring between the ECU (4000KS) pins J1/7 and the EIU-2 (1KS2) pin AB/14B.
(4) If the fault continues:
- make sure that there is no ground signal at the EIU-2 (1KS2) pin AA/5B.
C. Do the test given in Para. 3.
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TASK 71-50-00-810-803
Loss of the 115VAC Power Supply on the ECU 1
1. Possible Causes
_______________
- EIU-1 (1KS1)
- ECU (4000KS)
- J2 harness
- wiring
- C/B-ENGINE/IGN/ENG1/SYS B (3JH1)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R 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 R (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 74-31/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
121VU ENGINE/IGN/ENG1/SYS B 3JH1 P41
B. Test
(1) If you cannot close the circuit breaker (3JH1), refer to Para. 4.B.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 动力装置 POWER PLANT(9)
