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TASK 73-10-00-810-817
Failure of the FRV of the Engine 1 in the Closed Position, on Channel A
1. Possible Causes
_______________
R
- harness J7 R - fuel return valve R - ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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R AMM 73-11-50-000-002
R AMM 73-11-50-400-002 AMM 73-21-50-000-040 AMM 73-21-50-400-040 AMM 73-21-60-000-001 AMM 73-21-60-400-001
R ASM 78-25/18 R 73-10-00-991-001
3. Fault Confirmation
__________________
R A. Not applicable. R
4. Fault Isolation
_______________ Removal of the Fuel Return Valve (FRV)
Installation of the Fuel Return ValveRemoval of the HJ7 HarnessInstallation of the HJ7 HarnessRemoval of the Electronic Control Unit (ECU)(4000KS)Installation of the Electronic Control Unit (ECU)(4000KS)
Fig. 201
R A. The fault is generated when the fuel return valve fails to reach the
R opened position when commanded by the ECU.
R (1) Inspect the J7 harness and associated connectors for sign of damage
R or contamination (Ref. ASM 78-25/18).
R
R (2) If damage is found:
R - replace the harness J7 (Ref. AMM TASK 73-21-50-000-040) and (Ref.
R AMM TASK 73-21-50-400-040).
R
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R (3) If nothing is found:
- replace the fuel return valve (Ref. AMM TASK 73-11-50-000-002) and
(Ref. AMM TASK 73-11-50-400-002).
R
R (4) If the fault continues:
R - replace the harness J7 (Ref. AMM TASK 73-21-50-000-040) and (Ref.
R AMM TASK 73-21-50-400-040).
R (5) If the fault continues:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref.
R AMM TASK 73-21-60-400-001).
R
R B. Test
R (1) Disconnect the connector C132 from the HJ13 harness at the oil
R temperature sensor to force the opening of the fuel return valve.
R (Ref. Fig. 201/TASK 73-10-00-991-001)
R (2) Do a wet motoring test of the engine and check that the fault does
R not duplicate. Disregard the ECAM status linked to the disconnection
R of the oil temperature sensor during the test.
R (3) Reconnect the HJ13 harness to the oil temperature sensor.
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TASK 73-10-00-810-818
Failure of the FRV of the Engine 2 in the Closed Position, on Channel A
1. Possible Causes
_______________
R
- harness J7 R - fuel return valve R - ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 發(fā)動機燃油和控制 1(46)
