R (a) If the fault continues during the subsequent flights:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and
R (Ref. AMM TASK 73-21-60-400-001).
R (b) If the fault continues during the subsequent flights:
R - replace the harness HJ9 (channel A) (Ref. AMM TASK 73-21-50-R 000-042) and (Ref. AMM TASK 73-21-50-400-042).
R (3) If the failure message START AIR, SAV is confirmed:
R (a) If freezing conditions are present:
R - manually operate the starter shutoff valve (Ref. AMM TASK 80-R 11-00-040-045).
R 1_ If the starter shutoff valve handle does not move:
R - use a heat gun to warm up the starter shutoff valve.
R 2_ If the starter shutoff valve remains stuck:
R - replace the starter shutoff valve (Ref. AMM TASK 80-11-20-R 000-003) and (Ref. AMM TASK 80-11-20-400-003).
R (b) If freezing conditions are not present:
R - operate the starter shutoff valve (Ref. AMM TASK 80-11-00-040-R 045).
R 1_ If the starter shutoff valve handle does not move:
R - replace the starter shutoff valve (Ref. AMM TASK 80-11-20-R 000-003) and (Ref. AMM TASK 80-11-20-400-003).
R 2_ If the fault continues during the subsequent flights:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001)
R (Ref. AMM TASK 73-21-60-400-001).
R 3_ If the fault continues during the subsequent flights:
R - disconnect the harness HJ9 (channel A) from the ECU (4000KS)
R and visually examine the connector and receptacle of the
R harness HJ9 (channel A) for damaged pins or contamination
R (Ref. AMM TASK 73-21-50-210-001).
R a_ If damage is found:
R - repair or replace as required.
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R R R R b_ If no damage is found:- replace the harness HJ9 (channel A) (Ref. AMM TASK 73-21-50-000-042) and (Ref. AMM TASK 73-21-50-400-042).
B. Do the test given in Para. 3.A.
(1) No additional maintenance action is required if the fault is not confirmed.
(2) Repeat the fault isolation procedure if the fault continues.
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TASK 80-11-00-810-805
Failure of the Control of the Starter Shutoff Valve Solenoid through the
Channel A on Engine 1
1. Possible Causes
_______________
- ECU (4000KS)
- harness J9
- starter shutoff valve
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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AMM 73-21-50-000-042 Removal of the HJ9 Harness
AMM 73-21-50-400-042 Installation of the HJ9 Harness
R 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
R (ECU)(4000KS) AMM 73-29-00-710-040 Operational Test of the FADEC on the ground (with Engine Motoring) AMM 80-11-20-000-003 Removal of the Starter Shutoff Valve AMM 80-11-20-400-003 Installation of the Starter Shutoff Valve ASM 74-31/01
3. Fault Confirmation
__________________
A. Do the operational test of the FADEC 1A 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 SAV (SOL), J9, ECU:
- do a check for open or short to ground of the harness J9 between the ECU (4000KS) and the starter shutoff valve solenoid, pins J9/11, 12 to pins J9/1, 2 (Ref. ASM 74-31/01).
(1) If the wiring is not correct:
- repair the above wiring.
(2) If the wiring is correct:
- disconnect the harness J9 from the ECU (4000KS) and do a check of the ECU resistance cable between: . pins 11 and 12 (15 to 60 Ohms) . pins 11 and 3 (> 10 Megohms) . pins 11 and ground (> 10 Megohms).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 STARTING 起动(14)
