- replace the RELAY-ENGINE START (17HB).
 (1) If the fault continues:

 - 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:

 - do a check and repair the wiring from the EIU-1 (1KS1) to the engine start relay (17HB) pin AB/1J to pin AA/Z (Ref. ASM 73-25/09).
 B. Do the test given in Para. 3.A.
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 TASK 73-25-00-810-866
 Failure of the Pack Valve Output on Engine 2
 1. Possible Causes
_______________
 - EIU-2 (1KS2)

 - RELAY-ENGINE START (16HB)

 - wiring from the EIU-2 (1KS2) to the engine start relay (16HB)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
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 73-25-34-710-043 Operational Test of the Engine Interface Unit
 ASM 73-25/09

 3. Fault Confirmation
__________________
 A. Do the operational test of the engine interface unit through the CFDS (Ref. AMM TASK 73-25-34-710-043).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message CHECK 16HB RELAY CIRCUIT OR EIU
 2:

 - replace the RELAY-ENGINE START (16HB).
 (1) If the fault continues:

 - 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:

 - do a check and repair the wiring from the EIU-2 (1KS2) to the engine start relay (16HB) pin AB/1J to pin AA/Z (Ref. ASM 73-25/09).
 B. Do the test given in Para. 3.A.
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 TASK 73-25-00-810-867
 Failure of the APU Boost on Engine 1
 1. Possible Causes
_______________
 - EIU-1 (1KS1)

 - ECB (59KD)

 - wiring from EIU-1 (1KS1) to the ECB (59KD)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 49-61-34-000-001 Removal of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) AMM 49-61-34-400-001 Installation of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) 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 73-25-34-710-043 Operational Test of the Engine Interface Unit
 ASM 73-25/09
 ASM 73-25/09

 3. Fault Confirmation
__________________
 A. Do the operational test of the engine interface unit through the CFDS (Ref. AMM TASK 73-25-34-710-043).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message CHECK ECB (59KD)/EIU1 CIRCUIT OR EIU1:
 - do a check to make sure that the APU is boosted during the engine start sequence when the starter shutoff valve is open.
 (1) If the APU is boosted:

 - 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 APU is not boosted:

 - do a check and repair the wiring from EIU-1 (1KS1) to the ECB (59KD), pin AB/1C to pin AB/E5 (Ref. ASM 73-25/09) and (Ref. ASM 73-25/09).
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 - replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
　
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) 發(fā)動(dòng)機(jī)燃油和控制 2(46)