TASK 77-00-00-810-881
 Loss of the Channel B of the FADEC on Engine 2
 1. Possible Causes
_______________
 - harness J10

 - ECU (4000KS)

 - 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 2B on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
 4. Fault Isolation
_______________
 A. If the fault symptom is identified by:
 - the upper ECAM warning ENG2 FADEC B FAULT

 - no CFDS maintenance message after the test of the FADEC 2B

 - 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 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 77-00-00-810-882
 Loss of the Channels A and B of the FADEC on Engine 1
 1. Possible Causes
_______________
 - EIU-1 (1KS1)

 - ECU (4000KS)

 - harnesses J1 and J2

 - aircraft wirings

 - C/B-ENGINE/1/FADEC A/AND EIU 1 (2KS1)

 - C/B-ENGINE/ENG1/FADEC B/AND EIU 1(4KS1)

 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 1A and 1B on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
　
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