2 If no damage is found:
_
- do a cleaning of the connector and receptacle using a bristle brush with stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
(b) If the fault continues during the subsequent flights:
- replace the EGT thermocouple (Ref. AMM TASK 77-21-10-000-025) (Ref. AMM TASK 77-21-10-400-025).
(c) If the fault continues during the subsequent flights: R - replace the extension leads of the CJ13 and HJ13 harnesses R (Ref. AMM TASK 77-21-10-000-008) and (Ref. AMM TASK 77-21-10-
400-008).
B. No additionnal maintenance action is required if the fault is not confirmed.
(1) Repeat the fault isolation procedure if the fault continues.
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TASK 77-00-00-810-824
Disagree between the EGT Indication and the ECU Output on Engine 2
1. Possible Causes
_______________
- EGT thermocouple
- CJ13 and HJ13 harnesses
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
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No specific bristle brush
B. Consumable Materials
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REFERENCE DESIGNATION
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Material No. CP2011 *
stoddard solvent (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
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AMM 73-21-50-210-002 Visual Inspection of the Wiring Harnesses
AMM 77-21-10-000-008 Removal of the Upper Extension Lead
R AMM 77-21-10-000-025 Removal of the Main Junction Box AMM 77-21-10-400-008 Installation of the Upper Extension Lead
R AMM 77-21-10-400-025 Installation of the Main Junction Box
3. Fault Confirmation
__________________
A. Test
(1) Not applicable.
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4. Fault Isolation
_______________
R A. The ECAM warning message ENG 2 EGT DISCREPANCY is generated if the
R cockpit indicated EGT and the EGT output selected from the ECU disagree.
(1) Disconnect harnesses from the EGT sensor receptacles, HJ13 and CJ13 (upper right hand and left hand thermocouple connectors, lower left hand and right hand thermocouple connectors).
R (a) Visually examine the receptacle and the connector for damaged R pins or contamination (Ref. AMM TASK 73-21-50-210-002).
1 If damage is found:
_ - repair or replace as required.
2 If no damage is found:
_
- do a cleaning of the connector and receptacle using a bristle brush with stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
(2) Disconnect harnesses from the ECU (4000KS), HJ3 and HJ4.
R (a) Visually examine the receptacle and the connector for damaged R pins or contamination (Ref. AMM TASK 73-21-50-210-002).
1 If damage is found:
_ - repair or replace as required.
2 If no damage is found:
_
- do a cleaning of the connector and receptacle using a bristle brush with stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
(b) If the fault continues during the subsequent flights:
- replace the EGT thermocouple (Ref. AMM TASK 77-21-10-000-025) (Ref. AMM TASK 77-21-10-400-025).
(c) If the fault continues during the subsequent flights: R - replace the extension leads of the CJ13 and HJ13 harnesses R (Ref. AMM TASK 77-21-10-000-008) and (Ref. AMM TASK 77-21-10-
400-008).
B. No additionnal maintenance action is required if the failure is not confirmed.
(1) Repeat the fault isolation procedure if the fault continues.
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