DOC AIRBUS | AMM A320FFADEC System Wiring Harness Operation Test [PW11]
TASK 73-21-00-710-810-A
FADEC System Wiring Harness Operation Test
The harness interactive test checks for harness and connector failures. During the test, the suspected harnesses must be moved to help reproduce fault messages reported by the Electronic Engine Control (EEC).
Use this procedure to perform harness checks to isolate intermittent EEC monitored faults.
This procedure also includes detailed on-wing engine harness checks if time permits.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 73-21-00-710-057-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:02:36 UTC
FADEC System Wiring Harness Operation Test
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThe harness interactive test checks for harness and connector failures. During the test, the suspected harnesses must be moved to help reproduce fault messages reported by the Electronic Engine Control (EEC).
Use this procedure to perform harness checks to isolate intermittent EEC monitored faults.
This procedure also includes detailed on-wing engine harness checks if time permits.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | COVER - PROTECTION |
| REFERENCE | DESIGNATION |
|---|---|
| TSM 71-00-00-810-835 | Component and Harness Intermittent Troubleshooting Procedure for Guidance Troubleshooting Intermittent Faults |
FADEC System Wiring Harness Operation Test - Fan Case HarnessesSubtask 73-21-00-710-057-A ** ON A/C NOT FOR ALL
A. Not Applicable
4. ProcedureCAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 73-21-00-710-058-A ** ON A/C NOT FOR ALL A. Do the FADEC System Wiring Harness Operation Test
(2) Use the multipurpose control and display unit to do a ground harness test.
(3) If any faults appear, refer to the relevant task in the Troubleshooting Manual.
(4) Examine the assembly for foreign objects, damage and correct assembly.
(5) Removal of protection covers
NOTE: The FADEC system wiring harness operation test is currently not available. To check for harness and connector failures TSM 71-00-00-810-835.
(1) Installation of protection covers CAUTION:
INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.
(a) Make sure that you install COVER - PROTECTION as necessary to prevent damage to the engine. (2) Use the multipurpose control and display unit to do a ground harness test.
(3) If any faults appear, refer to the relevant task in the Troubleshooting Manual.
(4) Examine the assembly for foreign objects, damage and correct assembly.
(5) Removal of protection covers
CAUTION:
REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.