DOC AIRBUS | TSM A320FFailure of the Ignition Systems A and B on Engine 1
1. Possible Causes
· LEAD-IGNITION, A ( 4002JH1 )
· LEAD-IGNITION, B ( 4002JH2 )
· PLUG-IGNITER, A ( 4001JH1 )
· PLUG-IGNITER, B ( 4001JH2 )
· 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 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External
Power
Ref. AMM 31-60-00-860-002 EIS Stop Procedure
Ref. AMM 71-00-00-710-018 Discontinued Start, Restart and Shutdown Procedures
Ref. AMM 71-00-00-710-043 Normal Engine Automatic Start Procedure
Ref. AMM 71-00-00-710-047 Normal Engine Manual Start Procedure
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 74-21-41-000-010 Removal of the Igniter Plug
Ref. AMM 74-21-41-400-010 Installation of the Igniter Plug
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 80-00-00-710-135-A
A. Test
(1) Not applicable, the engine does not start.
4. Fault Isolation
Subtask 80-00-00-810-107-A
A. If the fault symptom is identified by the maintenance messages IGN1/115VAC/EEC1 and IGN2/115VAC/
EEC1:
· remove the ignition lead from the igniter plug and examine the connector for arcing and burning.
(1) If you find arcing or burning, do the steps below:
(a) 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 .
(b) If the fault continues:
· replace the PLUG-IGNITER, A ( 4001JH1 ) and PLUG-IGNITER, B ( 4001JH2 ) Ref.
AMM 74-21-41-000-010 and Ref. AMM 74-21-41-400-010 .
(c) If the fault continues:
· 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 .
(d) If the fault continues:
· replace the RELAY BOX ( 4100KS ) Ref. AMM 71-51-49-000-010 and Ref.
AMM 71-51-49-400-010 .
(e) If the fault continues:
· replace the NOZZLE-FUEL ( 2005EM ) adjacent to the igniter plug (4001JH1 and 4001JH2)
Ref. AMM 73-13-41-000-010 and Ref. AMM 73-13-41-400-010 .
(2) If you find no arcing or burning, do the steps below:
(a) Replace the PLUG-IGNITER, A ( 4001JH1 ) and PLUG-IGNITER, B ( 4001JH2 ) Ref.
AMM 74-21-41-000-010 and Ref. AMM 74-21-41-400-010 .
(b) If the fault continues:
· 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 .
(c) If the fault continues:
· 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 .
(d) If the fault continues:
· replace the RELAY BOX ( 4100KS ) Ref. AMM 71-51-49-000-010 and Ref.
AMM 71-51-49-400-010 .
(e) If the fault continues:
· 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 .
Subtask 80-00-00-710-136-A
B. Test
(1) On the panel 50VU, push the ENG FADEC GND PWR 1 pushbutton switch and release it again.
NOTE: This action resets the FADEC memory.
(2) Adjust the brightness of the MCDU screen.
(3) Push the INIT mode key. The INIT page comes into view.
(4) Enter a new flight number.
(5) Start the engine 1 by the normal engine automatic start procedure Ref. AMM 71-00-00-710-043 or
the normal engine manual start procedure Ref. AMM 71-00-00-710-047 .
NOTE: Operation of the engine for at least 3 minutes erases the LAST LEG REPORT related to the
last flight and the new fault is recorded in the EEC LAST LEG REPORT.
(6) Do a shutdown of the engine 1 by the discontinued start, restart and shutdown procedure Ref.
AMM 71-00-00-710-018 .
(7) Read the LAST LEG REPORT of the FADEC (1A and 1B) menu on the MCDU (Ref. 70-00-00 Page
Block 301 Task Supporting Data).
(a) Make a record of the maintenance message.
(b) Make a record of the channel FADEC 1A or FADEC 1B which found the fault.
(8) Fully decrease the brightness of the MCDU screen (display off).
5. Close-up
Subtask 80-00-00-860-083-A
A. Put the aircraft back to its initial configuration.
(1) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
Ref. AMM 31-60-00-860-002 .
(2) On the panel 50VU, push the ENG/FADEC GND PWR1 pushbutton switch.
(3) De-energize the aircraft electrical circuits
Ref. AMM 24-41-00-862-002 . [Rev.6 from Feb 2017] 2026.04.04 04:38:42 UTC