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TASK 77-00-00-810-877
Loss of the Channel B of the FADEC on Engine 1
1. Possible Causes
_______________
- harness J10
- ECU (4000KS)
- control alternator
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 71-00-00-710-006 Minimum Idle Check AMM 73-21-30-000-002 Removal of the Control Alternator AMM 73-21-30-400-002 Installation of the Control Alternator AMM 73-21-50-000-009 Removal of the J10 Harness AMM 73-21-50-400-009 Installation of the J10 Harness 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 73-29-00-710-040 Operational Test of the FADEC on the ground (with Engine Motoring) ASM 73-25/18
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the FADEC 1B on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
_______________
A. If the fault symptom is idenfified by:
- the upper ECAM warning ENG1 FADEC B FAULT
- no CFDS maintenance message after the test of the FADEC 1B
- the crew observation N2 higher than 15% on ground or in flight
(1) do a check for open or short to ground of the harness J10 between the ECU (4000KS) and the control alternator pins J10/4, 5, 13, 14, 15 to pins J10/2, 3, 4, 5 (Ref. ASM 73-25/18)
(a) If the wiring is not correct:
- repair the above wiring.
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F 『 E C F M E E E E 56 E E E (b) If the wiring is correct:
- disconnect the harness J10 from the ECU (4000KS) and do a check of the ECU cable resistance between: . pins 5 and 13 (< 1 Ohm) . pins 5 and 14 (< 1 Ohm) . pins 5 and 15 (< 1 Ohm) . pins 5 and 4 (> 10 Megohms) . pin 5 and the ground (> 10 Megohms).
1 If the resistance values are in the specified limits:
_
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
2 If the resistance values are out of the specified limits:
_
- disconnect the harness J10 from the control alternator and do a check of the alternator resistance between: . pins 2 and 5 (< 1 Ohm) . pins 3 and 5 (< 1 Ohm) . pins 4 and 5 (< 1 Ohm) . pin 5 and the ground (> 10 Megohms).
a If the resistance values are in the specified limits:
_
- replace the harness J10 (Ref. AMM TASK 73-21-50-000-009) and (Ref. AMM TASK 73-21-50-400-009).
b If the resistance values are out of the specified limits:
_
- replace the control alternator (Ref. AMM TASK 73-21-30-000-002) and (Ref. AMM TASK 73-21-30-400-002).
B. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006).
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TASK 77-00-00-810-878
Loss of the Channel A of the FADEC on Engine 2
1. Possible Causes
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- EIU-2 (1KS2)
- ECU (4000KS)
- harness J1
- aircraft wiring
- C/B-ENGINE/2/FADEC A/AND EIU 2 (2KS2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 71-00-00-710-006 Minimum Idle Check 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 Motoring)
ASM 73-25/05
ASM 73-25/08
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the FADEC 2A on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
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