(2) Do the operational test of the FADEC 2A and 2B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
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A. If the fault symptom is identified by the upper ECAM warning ENG2 BLEED STATUS FAULT and the tests of the EIU and FADEC give no maintenance messages:
- do a check for open or short to ground of the harness J3 between the EIU (1KS2) and the ECU (4000KS) pins AB/5A, 5C to pins J3/22, 23 (Ref. ASM 73-25/06).
(1) If the wiring is not correct:
- repair the above wiring.
(2) If the wiring is correct:
- 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 continues:
- replace the CONT-ZONE TEMPERATURE (8HK) (Ref. AMM TASK 21-63-34-000-001) and (Ref. AMM TASK 21-63-34-400-001).
(4) If the fault continues:
- 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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Failure of the Starter Shutoff Valve on Engine 1
1. Possible Causes
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- starter shutoff valve (SAV)
- starter
- harness J9
- harness J10
- ECU (4000KS)
2. Job Set-up Information
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A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-008 Removal of the J9 Harness AMM 73-21-50-000-009 Removal of the J10 Harness AMM 73-21-50-400-008 Installation of the J9 Harness AMM 73-21-50-400-009 Installation of the J10 Harness 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 non Motoring)
AMM 80-11-10-000-001 Removal of the Pneumatic Starter
AMM 80-11-10-400-001 Installation of the Pneumatic Starter
AMM 80-11-20-000-001 Removal of the Starter Shutoff Valve
AMM 80-11-20-400-001 Installation of the Starter Shutoff Valve
3. Fault Confirmation
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A. Test
(1) Do the operational test of the FADEC 1A and 1B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
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A. If the fault symptom is identified by the upper ECAM warning START AIR, SAV and the test of the FADEC 1A and 1B gives no CFDS maintenance message:
- do a check for open or short to ground at pins J9/11, 12 or J10/11, 12 of the harness J9 or J10 between the ECU (4000KS) and the stater shutoff valve.
(1) If the wiring is not correct:
- repair the above wiring.
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F 『 E C F M E E E E 56 E E E (2) If the wiring is correct:
- disconnect the harness J9 or J10 from the ECU (4000KS) and do a check of the ECU resistance cable between: . pins 11 and 12 (10 to 60 ohms).
(a) If the resistance values are in the specified limits:
- do a check for low starter air duct pressure.
1 If the starter air duct pressure is in the specified limits
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(11 PSI < P < 60 PSI):
- replace the starter shutoff valve (SAV) (Ref. AMM TASK 80-11-20-000-001) (Ref. AMM TASK 80-11-20-400-001)
- replace the starter (Ref. AMM TASK 80-11-10-000-001) (Ref. AMM TASK 80-11-10-400-001). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机指示(105)
