3. Fault Confirmation
__________________
A. Not applicable.
4. Fault Isolation
_______________
A. Read the scheduled maintenance report or class 3 report and check if the maintenance message P0/P12/T12, ADC, ECU is present.
(1) If the message is present:
- check the P0 port of the ECU for absence of blockage (Ref. AMM 73-20-00 P.Block 001).
- check the PS12 sense line for absence of blockage or leaks (Ref. AMM TASK 72-23-00-280-002). If leaks or blockage are found tighten unions or replace the PS12 sense line (Ref. AMM TASK 72-23-00-000-040) and (Ref. AMM TASK 72-23-00-400-040).
(2) If nothing is found:
- Do a check of the Post Flight Report (PFR), of the Scheduled Maintenance Report (SMR) or class 3 Report and of the FADEC Last Leg Report for LGCIU failure.
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E 56 E E E (a) If message is present:
- do the related trouble shooting procedure for the LGCIU.
(b) If no message is present:
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(3) If the fault repeats on the subsequent flights:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
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TASK 73-25-00-810-917
Loss of Weight on Wheels Signal on the System 2
1. Possible Causes
_______________
- P0 port
- PS12 sense line
- LGCIU
- EIU-2 (1KS2)
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 72-23-00-000-040 Removal of the PS12 Line
AMM 72-23-00-280-002 Inspection/Check of the PS12 line
AMM 72-23-00-400-040 Installation of the PS12 Line
AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU)
AMM 73-21-60-400-001 Installation of the Electronic Control Unit (ECU)
AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU)
AMM 73-20-00 P.Block 001 CONTROLLING
3. Fault Confirmation
__________________
A. Not applicable.
4. Fault Isolation
_______________
A. Read the scheduled maintenance report or class 3 report and check if the maintenance message P0/P12/T12, ADC, ECU is present.
(1) If the message is present:
- check the P0 port of the ECU for absence of blockage (Ref. AMM 73-20-00 P.Block 001).
- check the PS12 sense line for absence of blockage or leaks (Ref. AMM TASK 72-23-00-280-002). If leaks or blockage are found tighten unions or replace the PS12 sense line (Ref. AMM TASK 72-23-00-000-040) and (Ref. AMM TASK 72-23-00-400-040).
(2) If nothing is found:
- Do a check of the Post Flight Report (PFR), of the Scheduled Maintenance Report (SMR) or class 3 Report and of the FADEC Last Leg Report for LGCIU failure.
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E 56 E E E (a) If message is present:
- do the related trouble shooting procedure for the LGCIU.
(b) If no message is present:
- replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(3) If the fault repeats on the subsequent flights:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机燃油和控制 2(67)
