- do a check for 28VDC at EIU 1 pins AC/9, 11.
(a) 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).
(2) If the fault continues:
- replace the harness J3.
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E F 『 E C F M E E E E 56 E E E (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.A.
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TASK 71-50-00-810-833
Loss of all Signals from the EIU to the FADEC on Engine 2
1. Possible Causes
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- EIU-2 (1KS2)
- connector J3 at the ECU (4000KS)
- harness J3
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------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 73-25/10
3. Fault Confirmation
__________________
A. 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
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A. If the test gives the maintenance message EIU (ARINC), J3:
- do a visual check of the connector J3 at the ECU (4000KS) for integrity (Ref. ASM 73-25/10).
(1) If the fault continues:
- do a check for 28VDC at EIU 2 pins AC/9, 11.
(a) If there is 28VDC:
- replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(2) If the fault continues:
- replace the harness J3.
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E F 『 E C F M E E E E 56 E E E (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.A.
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