W DOC AIRBUS | TSM A320F

Failure of the Starter Shutoff Valve - Engine 1 - Channel A

TASK 80-11-00-810-803-A
Failure of the Starter Shutoff Valve - Engine 1 - Channel A

1. Possible Causes
  • starter shutoff valve
  • harness J9
  • harness HJ9
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 73-21-50-000-008
Removal of the J9 Harness
AMM 73-21-50-000-042
Removal of the HJ9 Harness for SAC Engines
AMM 73-21-50-210-001
Visual Inspection of the Wiring Harness
AMM 73-21-50-400-008
Installation of the J9 Harness
AMM 73-21-50-400-042
Installation of the HJ9 Harness for SAC Engines
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 73-29-00-710-040
Operational Test of the FADEC on the ground (with Engine Motoring)
AMM 80-11-00-040-041
Manually Operate the Starter Valve
AMM 80-11-00-040-045
Manually Operate the Starter Valve
AMM 80-11-20-000-001
Removal of the Starter Shutoff Valve
AMM 80-11-20-000-003
Removal of the Starter Shutoff Valve
AMM 80-11-20-400-001
Installation of the Starter Shutoff Valve
AMM 80-11-20-400-003
Installation of the Starter Shutoff Valve
3. Fault Confirmation
Subtask 80-11-00-710-054-A ** ON A/C NOT FOR ALL
A. Test
   (1) Do the operational test of the FADEC 1A on the ground (with engine motoring) AMM 73-29-00-710-040.
4. Fault Isolation
Subtask 80-11-00-810-052-A ** ON A/C NOT FOR ALL
A. This fault is generated if the actual starter shutoff valve position and the demanded valve position disagree for a set time interval.

NOTE: The starter air duct pressure is expected to be greater than 25 psi (1.72 bar).
If the starter air duct pressure is less than 25 psi:
  • do the trouble shooting of the bleed air system (TSM chapter 49 if the APU was used),
  • check that supplying engine speed was correct if cross bleed start was performed (increase engine speed for higher bleed pressure).
   (1) If the failure message START AIR, SAV is not confirmed:
     (a) No maintenance action is required.
   (2) If the failure message START AIR, SAV is not confirmed but is repetitive:
     (a) If the fault continues during the subsequent flights:
     (b) If the fault continues during the subsequent flights:
   (3) If the failure message START AIR, SAV is confirmed:
     (a) If freezing conditions are present:
       1 If the starter shutoff valve handle does not move:
  • use a heat gun to warm up the starter shutoff valve.
       2 If the starter shutoff valve remains stuck:
     (b) If freezing conditions are not present:
       1 If the starter shutoff valve handle does not move:
       2 If the fault continues during the subsequent flights:
       3 If the fault continues during the subsequent flights:
  • disconnect the harness J9 (channel A) from the ECU (4000KS) and visually examine the connector and receptacle of the harness J9 (channel A) for damaged pins or contamination AMM 73-21-50-210-001.
         a If damage is found:
  • repair or replace as required.
         b If no damage is found:
Subtask 80-11-00-810-052-B ** ON A/C NOT FOR ALL
A. This fault is generated if the actual starter shutoff valve position and the demanded valve position disagree for a set time interval.

NOTE: The starter air duct pressure is expected to be greater than 25 psi (1.72 bar).
If the starter air duct pressure is less than 25 psi:
  • do the trouble shooting of the bleed air system (TSM chapter 49 if the APU was used),
  • check that supplying engine speed was correct if cross bleed start was performed (increase engine speed for higher bleed pressure).
   (1) If the failure message START AIR, SAV is not confirmed:
     (a) No maintenance action is required.
   (2) If the failure message START AIR, SAV is not confirmed but is repetitive:
     (a) If the fault continues during the subsequent flights:
     (b) If the fault continues during the subsequent flights:
   (3) If the failure message START AIR, SAV is confirmed:
     (a) If freezing conditions are present:
       1 If the starter shutoff valve handle does not move:
  • use a heat gun to warm up the starter shutoff valve.
       2 If the starter shutoff valve remains stuck:
     (b) If freezing conditions are not present:
       1 If the starter shutoff valve handle does not move:
       2 If the fault continues during the subsequent flights:
       3 If the fault continues during the subsequent flights:
  • disconnect the harness HJ9 (channel A) from the ECU (4000KS) and visually examine the connector and receptacle of the harness HJ9 (channel A) for damaged pins or contamination AMM 73-21-50-210-001.
         a If damage is found:
  • repair or replace as required.
         b If no damage is found:
Subtask 80-11-00-710-055-A ** ON A/C NOT FOR ALL
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.
[Rev.8 from Aug 2018] 2026.04.04 04:38:39 UTC
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