1. Possible Causes
_______________
 - ECU (4000KS)

 - aircraft wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 73-25-34-710-043 Operational Test of the Engine Interface Unit ASM 73-25/10
 3. Fault Confirmation
__________________
 A. Do the operational test of the Engine Interface Unit (Ref. AMM TASK 73-25-34-710-043).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message EIU2 : NO FADEC 2A DATA:
 - replace the ECU (4000KS), (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 (1) If the fault continues:
 - do a check and repair the aircraft wiring of the output 1 bus on channel A from the ECU (4000KS) to the first terminal block (Ref. ASM 73-25/10).
 B. Do the test given in Para. 3.
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 1. Possible Causes
_______________
 - ECU (4000KS)

 - aircraft wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 22-96-00-710-001 Operational Test of the AFS 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) ASM 73-25/10
 3. Fault Confirmation
__________________
 A. Do the operational test of the AFS (Ref. AMM TASK 22-96-00-710-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message AFS : FADEC 1:
 - replace the ECU (4000KS), (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 (1) If the fault continues:
 - do a check and repair the aircraft wiring of the output 1 bus on channel A from the ECU (4000KS) to the first terminal block (Ref. ASM 73-25/10).
 B. Do the test given in Para. 3.
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 TASK 73-29-00-810-834
 Loss of the Output 1 Bus of the ECU 2 Channel A
 1. Possible Causes
_______________
 - ECU (4000KS)

 - aircraft wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-60-00-740-002 EIS Input Test AMM 31-60-00-740-007 GROUND SCANNING Test of the DMC 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)
 ASM 73-25/10

 3. Fault Confirmation
__________________
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 A. Do the EIS input test (Ref. AMM TASK 31-60-00-740-002).
R **ON A/C 106-149, 303-399, 401-499,
 A. Do the Ground Scanning Test of the DMC (Ref. AMM TASK 31-60-00-740-007).
 **ON A/C ALL
 4. Fault Isolation
_______________
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 A. If the test gives the maintenance message DMC1 : NO ECU 2A DATA:
 - replace the ECU (4000KS), (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 (1) If the fault continues:
 - do a check and repair the aircraft wiring of the output 1 bus on channel A from the ECU (4000KS) to the first terminal block (Ref. ASM 73-25/10).
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