W DOC AIRBUS | TSM A320F

Ignition Failure/Engine Failed to Light during Start

TASK 74-00-00-810-830-A
Ignition Failure/Engine Failed to Light during Start

1. Possible Causes
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
VOLTMETER - AC, 0-20 V MIN, 0,001 V, 50 TO 2000 HTZ
 B. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 71-00-00-810-834-A
General Troubleshooting Guidelines for Additional Troubleshooting Information
TSM TASK 71-00-00-810-835-A
Component and Harness Intermittent Troubleshooting Procedure for Guidance Troubleshooting Intermittent Faults
TSM TASK 71-00-00-810-850-A
Troubleshoot the Engine after a No Light - No/Low Fuel Flow event
TSM TASK 71-00-00-810-851-A
Troubleshoot the Engine after a No Light with Correct Fuel Flow event
AMM 71-00-00-860-822
Start the Engine (Normal Manual Start)
AMM 71-00-00-860-823
Start the Engine (Normal Automatic Start)
AMM 73-11-09-000-801
Removal of the Fuel Nozzles
AMM 73-11-09-400-801
Installation of the Fuel Nozzles
AMM 73-21-01-000-801
Removal of the Electronic Engine Control (EEC)
AMM 73-21-01-400-801
Installation of the Electronic Engine Control (EEC)
AMM 73-21-61-000-802
Removal of the Electronic Engine Control (EEC) Wiring Harness (WF01)
AMM 73-21-61-400-802
Installation of the Electronic Engine Control (EEC) Wiring Harness (WF01)
AMM 73-21-62-000-802
Removal of the EEC Wiring Harness (WF02)
AMM 73-21-62-400-802
Installation of the EEC Wiring Harness (WF02)
AMM 73-21-63-000-802
Removal of the Electronic Engine Control (EEC) Wiring Harness (W03)
AMM 73-21-63-400-802
Installation of the Electronic Engine Control (EEC) Wiring Harness (W03)
AMM 73-21-64-000-802
Removal of the Electronic Engine Control (EEC) Wiring Harness (W04)
AMM 73-21-64-400-802
Installation of the Electronic Engine Control (EEC) Wiring Harness (W04)
AMM 73-25-34-000-802
Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-802
Installation of the Engine Interface Unit (EIU)
AMM 73-25-34-710-802
Operational Test of the Engine Interface Unit (EIU) with the Centralized Fault Display System (CFDS)
AMM 74-00-00-210-801
General Visual Inspection (GVI) of the Ignition System
AMM 74-00-00-710-802
Operational Test of the Ignition System with the CFDS
AMM 74-11-01-000-801
Removal of the Ignition Exciter
AMM 74-11-01-400-801
Installation of the Ignition Exciter
AMM 74-21-01-000-801
Removal of the Igniter Plug
AMM 74-21-01-400-801
Installation of the Igniter Plug
AMM 74-21-61-000-802
Removal of the Ignition Cables
AMM 74-21-61-400-802
Installation of the Ignition Cables
AWM 743101
AWM 743102
AMM 78-36-00-010-802
Opening of the Thrust Reverser Cowl-Doors
AMM 78-36-00-410-802
Closing of the Thrust Reverser Cowl-Doors
F EEC Wiring Harness
F Ignition System - (Exciter and Cables)
F Ignition System Schematic
3. Fault Confirmation
Subtask 74-00-00-710-132-A ** ON A/C NOT FOR ALL
A. Not Applicable
NOTE: The Electronic Engine Control (EEC) in channel A and channel B has detected the engine has failed to light during the start using ignition system A and ignition system B. The ignition system alternates at the beginning of each engine auto start in the following sequence: Start 1- Ignition System A, Channel A, Start 2 - Ignition System A, Channel B, Start 3 - Ignition System B, Channel A, Start 4 - Ignition System B Channel B. The ignition exciter is located on the right side of the fan case at approximately 5 o'clock position.
4. Fault Isolation
WARNING: IGNITION SYSTEM VOLTAGE IS DANGEROUSLY HIGH. THE IGNITION SWITCH MUST BE IN THE "OFF" POSITION BEFORE REMOVING OR INSTALLING ANY IGNITION COMPONENTS. AFTER DISCONNECTING CABLE FROM IGNITER PLUG, DISCHARGE CURRENT BY GROUNDING IGNITION CABLE TERMINAL TO ENSURE COMPLETE DISSIPATION OF ENERGY FROM THE SYSTEM. FAILURE TO FOLLOW THIS PROCEDURE COULD RESULT IN SEVERE INJURY TO PERSONNEL.
WARNING: REFER TO THE MSDS FOR ALL MATERIAL USED AND THE MANUFACTURER'S SAFETY INSTRUCTIONS FOR ALL EQUIPMENT USED. IF YOU DO NOT OBEY THIS WARNING, INJURY CAN OCCUR.
CAUTION: MAKE SURE YOU REMOVE ELECTRICAL POWER FROM THE EEC BEFORE YOU REMOVE THE ELECTRICAL CONNECTORS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EEC CAN OCCUR.
Subtask 74-00-00-810-108-A ** ON A/C NOT FOR ALL
A. Do the steps that follow:
   (1) Open the thrust reverser cowl-doors AMM 78-36-00-010-802.
   (2) Look at the engine start report to see if fuel flow was OK during the engine start attempt.
     (a) If the fuel flow was not OK, refer to troubleshoot the engine after a no Light-no/low fuel flow event (Ref. TSM TASK 71-00-00-810-850).
       1 Do the test given in the Para. 4.B.
     (b) If the fuel flow was OK, refer to troubleshoot the engine after a no light with correct fuel flow event (Ref. TSM TASK 71-00-00-810-851).
       1 Do the test given in the Para. 4.B.
       2 If the problem continues, go to the next step.
   (3) Look at the ground report to see if there are any other maintenance messages set against the ignition system.
     (a) If there are any maintenance messages set, do the corrective action for those maintenance messages.
     (b) If there are no related maintenance messages, go to the next step.
   (4) Do a general visual inspection of the igniter plug (4036JH) and (4037JH), ignition exciter (4000JH) connections and the ignition cable (4038JH) and (4039JH) for signs of arcing and flashover AMM 74-00-00-210-801.
     (a) Fix any problems that you find.
     (b) Do the test given in the Para. 4.B.
     (c) If the fault comes back or no problems were found, go to the next step.
   (5) Do the FADEC system ignition test on the MCDU for the ignition system A and ignition system B AMM 74-00-00-710-802. Make sure that you run the test in channel A and B for each ignition system to confirm the problem.
     (a) If the ignition system test is OK, do the test given in the Para. 4.B.
       1 If the fault comes back, go to the Para. 4.A.(8).
     (b) If the ignition system test is not OK, go to the next step.
   (6) Do the following for system A:
  • Make sure that 115VAC is available at the ignition exciter (4000JH) connector P67 (4000JH-P67).
     (a) Disconnect the connector P67 (4000JH-P67) from the ignition exciter (4000JH).
     (b) Connect a VOLTMETER - AC, 0-20 V MIN, 0,001 V, 50 TO 2000 HTZ across connector P67 (4000JH-P67) contacts 2 and 3.
     (c) Do the FADEC system ignition test for ignition system A AMM 74-00-00-710-802 and look for 115VAC.
       1 If 115 VAC is available:
       2 If 115 VAC is not available:
  • Disconnect the connector at P102 (4104VC-A)/J102 (4104VC) interface.
  • Connect the VOLTMETER - AC, 0-20 V MIN, 0,001 V, 50 TO 2000 HTZ to J102 (4104VC) connector pins 1 and 2.
  • Do the FADEC system ignition test for ignition system A AMM 74-00-00-710-802 and look for 115 VAC.
         a If 115VAC is available:
         b If 115VAC is not available, go to the next step.
       3 Look for power at the P402 (402VC-A) fan pylon junction box. Connect a VOLTMETER - AC, 0-20 V MIN, 0,001 V, 50 TO 2000 HTZ across connector P402 (402VC-A) fan pylon junction box, pins 31 and 32.
       4 Do the FADEC system ignition test for ignition system A AMM 74-00-00-710-802.
         a If power was not available for ENG 1, continue to look at the aircraft power supply and wiring for problems.
  • Do an operational test of the Engine Interface Unit (EIU-1) with the Centralized Fault Display System (CFDS) AMM 73-25-34-710-802.
  • If there is ignition system or engine start/stop fault, troubleshoot it.
  • If there is no fault at (EIU-1), check for wiring fault:
    * Put a shunt between pin 31 and 32 at (402VC1).
    * Remove EIU-1 [1KS1] AMM 73-25-34-000-802.
    * Check for ground at pin 6 of connector AC on 85VU side.
    * If there is no ground, repair aircraft wiring AWM 743101.
         b If power was not available for ENG 2:
  • Do an operational test of the Engine Interface Unit (EIU-2) with the CFDS AMM 73-25-34-710-802.
  • If there is ignition system or engine start/stop fault, troubleshoot it.
  • If there is no fault at (EIU-2), check for wiring fault:
    * Put a shunt between pin 31 and 32 at (402VC2).
    * Remove EIU-2 [1KS2] AMM 73-25-34-000-802.
    * Check for ground at pin 6 of connector AC on 86VU side.
    * If there is no ground, repair aircraft wiring AWM 743102.
         c Remove shunts, connect all connectors disconnected and install EIU-1 [1KS1] and EIU-2 [1KS2] AMM 73-25-34-400-802.
         d If power was available, replace HARNESS-FAN, WF02 [4218KS] AMM 73-21-62-000-802 and AMM 73-21-62-400-802.
         e Do the test given in the Para. 4.B.
         f If the fault comes back, go to the next step.
   (7) Do the following for system B:
  • Make sure that 115VAC is available at the ignition exciter (4000JH) connector P66 (4000JH-P66).
     (a) Disconnect the connector P66 (4000JH-P66) from the ignition exciter (4000JH).
     (b) Connect a VOLTMETER - AC, 0-20 V MIN, 0,001 V, 50 TO 2000 HTZ across connector P66 (4000JH-P66) contacts 2 and 3.
     (c) Do the FADEC system ignition test for ignition system B AMM 74-00-00-710-802 and look for 115VAC.
       1 If 115 VAC is available:
       2 If 115 VAC is not available:
  • Disconnect the connector at P101 (4102VC-A)/J101 (4102VC) interface.
  • Connect the VOLTMETER - AC, 0-20 V MIN, 0,001 V, 50 TO 2000 HTZ to J101 (4102VC) connector pins 1 and 2.
  • Do the FADEC system ignition test for ignition system B AMM 74-00-00-710-802 and look for 115 VAC.
         a If 115VAC is available:
         b If 115VAC is not available, go to the next step.
       3 Look for power at the P403 (403VC-A) fan pylon junction box. Connect a VOLTMETER - AC, 0-20 V MIN, 0,001 V, 50 TO 2000 HTZ across connector P403 (403VC-A) fan pylon junction box, pins 31 and 32.
       4 Do the FADEC system ignition test for ignition system B AMM 74-00-00-710-802.
         a If power was not available for ENG 2, continue to look at the aircraft power supply and wiring for problems.
  • Do an operational test of the Engine Interface Unit (EIU-1) with the CFDS AMM 73-25-34-710-802.
  • If there is ignition system or engine start/stop fault, troubleshoot it.
  • If there is no fault at (EIU-1), check for wiring fault:
    * Put a shunt between pin 31 and 32 at (403VC1).
    * Remove EIU-1 [1KS1] AMM 73-25-34-000-802.
    * Check for ground at pin 6 of connector AC on 85VU side.
    * If there is no ground, repair aircraft wiring AWM 743101.
         b If power was not available for ENG 2:
  • Do an operational test of the Engine Interface Unit (EIU-2) with the CFDS AMM 73-25-34-710-802.
  • If there is ignition system or engine start/stop fault, troubleshoot it.
  • If there is no fault at (EIU-2), check for wiring fault:
    * Put a shunt between pin 31 and 32 at (403VC2).
    * Remove EIU-2 [1KS2] AMM 73-25-34-000-802.
    * Check for ground at pin 6 of connector AC on 86VU side.
    * If there is no ground, repair aircraft wiring AWM 743102.
         c Remove shunts, connect all connectors disconnected and install EIU-1 [1KS1] and EIU-2 [1KS2] AMM 73-25-34-400-802.
         d If power was available, replace HARNESS-FAN, WF01 [4217KS] AMM 73-21-61-000-802 and AMM 73-21-61-400-802.
         e Do the test given in the Para. 4.B.
         f If the fault comes back, go to the next step.
   (8) Replace IGNITION CABLE 1 [4038JH] and IGNITION CABLE 2 [4039JH] for ignition system A and B AMM 74-21-61-000-802 and AMM 74-21-61-400-802.
     (a) Do the test given in the Para. 4.B.
     (b) If the fault comes back, go to the next step.
   (9) Replace IGNITER-1 [4036JH] and IGNITER-2 [4037JH] for ignition system A and B AMM 74-21-01-000-801 and AMM 74-21-01-400-801.
     (a) Do the test given in the Para. 4.B.
     (b) If the fault comes back, go to the next step.
   (10) Replace IGNITION EXCITER [4000JH] AMM 74-11-01-000-801 and AMM 74-11-01-400-801 if not already replaced.
     (a) Do the test given in the Para. 4.B.
     (b) If the fault comes back, go to the next step.
   (11) If the problem continues, replace NOZZLE-FUEL [2005EM] AMM 73-11-09-000-801 and AMM 73-11-09-400-801 adjacent to the igniter plugs if not already replaced.
     (a) Do the test given in the Para. 4.B.
     (b) If the fault comes back, go to the next step.
   (12) Look at maintenance history. Repair any problems that have been deferred.
   (13) Replace W03 HARNESS [4087KS] AMM 73-21-63-000-802 and AMM 73-21-63-400-802 if not already replaced.
     (a) Do the test given in the Para. 4.B.
     (b) If the fault comes back, go to the next step.
   (14) Replace W04 HARNESS [4088KS] AMM 73-21-63-000-802 and AMM 73-21-63-400-802 if not already replaced.
     (a) Do the test given in the Para. 4.B.
     (b) If the fault comes back, go to the next step.
   (15) Replace [4000KS] AMM 73-21-01-000-801 and AMM 73-21-01-400-801 if not already replaced.
     (a) Do the test given in the Para. 4.B.
Subtask 74-00-00-710-133-A ** ON A/C NOT FOR ALL
B. Repair Confirmation
   (1) Do an engine start with ignition system A and ignition system B in both channels to confirm the repair of this fault AMM 71-00-00-860-822 or AMM 71-00-00-860-823 (four engine starts).
5. Close-up
Subtask 74-00-00-860-075-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
   (1) Make sure that the work area is clean and clear of tools and other items.
     (a) Close the thrust reverser cowl-doors AMM 78-36-00-410-802.
[Rev.8 from Aug 2018] 2026.04.04 04:40:43 UTC
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