DOC AIRBUS | TSM A320FFailure of the Ignition System on Engine 1
1. Possible Causes
· LEAD-IGNITION, A ( 4002JH1 )
· LEAD-IGNITION, B ( 4002JH2 )
· EXCITER-IGNITION, A ( 4000JH1 )
· EXCITER-IGNITION, B ( 4000JH2 )
· RELAY BOX ( 4100KS )
· NOZZLE-FUEL ( 2005EM )
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 71-00-00-710-012 Test No.3 : Idle Leak Check
Ref. AMM 71-51-49-000-010 Removal of the Relay Box
Ref. AMM 71-51-49-400-010 Installation of the Relay Box
Ref. AMM 73-13-41-000-010 Removal of the Fuel Nozzle
Ref. AMM 73-13-41-400-010 Installation of the Fuel Nozzle
Ref. AMM 74-11-38-000-010 Removal of the Ignition Exciter
Ref. AMM 74-11-38-400-010 Installation of the Ignition Exciter
Ref. AMM 74-21-41-200-010 Inspection of the Ignitor Plug, 4001JH1
Ref. AMM 74-21-43-000-010 Removal of the Ignition Leads
Ref. AMM 74-21-43-400-010 Installation of the Ignition Leads
3. Fault Confirmation
Subtask 80-00-00-710-086-A
A. Test
(1) The fault confirmation is not applicable, the fault is known.
(2) On the engine 1, do the Test No. 3, Idle leak check Ref. AMM 71-00-00-710-012 .
4. Fault Isolation
Subtask 80-00-00-810-072-A
A. If no fuel flow indication in cockpit:
· troubleshoot fuel switch connection to EEC.
(1) If the fault continues:
· remove ignition lead from the ignitor plug and examine the connectors.
(a) If arcing or burning is evident, replace the ignition lead.
(b) If no fault is found:
· do inspection of the ignitor plug for burning or erosion Ref. AMM 74-21-41-200-010 .
(c) If no fault is found:
· replace the LEAD-IGNITION, A ( 4002JH1 ) and LEAD-IGNITION, B ( 4002JH2 ) Ref.
AMM 74-21-43-000-010 and Ref. AMM 74-21-43-400-010 .
(d) If no fault is found:
· replace the EXCITER-IGNITION, A ( 4000JH1 ) and EXCITER-IGNITION, B ( 4000JH2 )
Ref. AMM 74-11-38-000-010 and Ref. AMM 74-11-38-400-010 .
(e) If no fault is found:
· replace the RELAY BOX ( 4100KS ) Ref. AMM 71-51-49-000-010 and Ref.
AMM 71-51-49-400-010 .
(f) If no fault is found:
· replace the NOZZLE-FUEL ( 2005EM ) adjacent to the igniter plugs (4001JH1) and
(4001JH2). Ref. AMM 73-13-41-000-010 and Ref. AMM 73-13-41-400-010 . [Rev.6 from Feb 2017] 2026.04.04 04:38:41 UTC