_______________

 2. Job Set-up Information

______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
73-29-00-810-874 Loss of the HPTC Torque Motor Control through the Channel A on Engine 2 73-29-00-810-875 Loss of the HPTC Torque Motor Control through the Channel B on Engine 2 AMM 73-29-00-710-040 Operational Test of the FADEC on the ground (with Engine Motoring)
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the FADEC 2A and 2B on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance messages J7, HMU (HPTCTM), ECU and J8, HMU (HPTCTM), ECU:
 - do the following troubleshooting procedures (Ref. TASK 73-29-00-810-874) and (Ref. TASK 73-29-00-810-875).
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 TASK 73-29-00-810-918
 Loss of Outputs 1 and 2 on Engine 1 J3 Connector
 1. Possible Causes
_______________
 - J3 connector

 - 5CA1

 - 5CA2

 - harness J3

 - ECU (4000KS)

 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 73-29-00-710-040 Operational Test of the FADEC on the ground (with Engine Motoring) ASM 73-25/12
 3. Fault Confirmation
__________________
 A. 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 test gives the maintenance message J3 (INSTINCT DISC):
 - do a check for loose J3 connector at the ECU 1 (Ref. ASM 73-25/12).
 (1) If the fault continues:

 - make sure that the pins are not bent and that the pins and sockets have not moved into the J3 ECU 1 connector (Ref. ASM 73-25/12).

 (2) If the fault continues:

 - do a check for open circuit in the harness J3 between the pins J3/6, 31 (Ref. ASM 73-25/12).
 (a) If the fault continues:
 - replace the 5CA1

 - replace the 5CA2

 - replace the harness J3.

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 - 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 73-29-00-810-919

 Loss of Outputs 1 and 2 on Engine 2 J3 Connector
 1. Possible Causes
_______________
 - J3 connector

 - 5CA1

 - 5CA2

 - harness J3

 - ECU (4000KS)

 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 73-29-00-710-040 Operational Test of the FADEC on the ground (with Engine Motoring) ASM 73-25/12
 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).
　
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