- disconnect the HJ7 harness from the ECU (4000KS) receptacle
- visually examine the ECU (4000KS) receptacle and the HJ7 harness connector for damaged pins or contamination (Ref. AMM TASK 73-21-50-210-001).
c If harness connector or ECU receptacle is damaged:
_ - repair or replace as required.
d If no damage is found:
_
- do an electrical resistance test through the HMU receptacle between: . pins 21 and 41 (< 5 ohms) . pins 21 and 8 (> 10 megohms) . pin 21 and the ground (> 10 megohms).
e If the resistance values are in the specified limits:
_
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
f If the resistance values are out of the specified limits:
_
- replace the HJ7 harness (Ref. AMM TASK 73-21-50-000-040) and (Ref. AMM TASK 73-21-50-400-040).
3 If the fault continues during the subsequent flights:
_
- remove the HMU (Ref. AMM TASK 73-21-10-000-002)
- inspect main fuel pump shaft.
a If damaged/broken or worn:
_
- replace the main fuel pump (Ref. AMM TASK 73-11-10-000-003) and (Ref. AMM TASK 73-11-10-400-003).
b If not damaged/broken or worn:
_
- replace the HMU (Ref. AMM TASK 73-21-10-000-002) and (Ref. AMM TASK 73-21-10-400-002).
B. Do the test given in Para. 3.A.
(1) No additional maintenance action is required if the fault is not confirmed.
(2) Repeat the fault isolation procedure if the fault continues.
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Loss of the Signal of the Channel A TCC-Sensor on Engine 1
1. Possible Causes
_______________
- TCC sensor
- harness CJ13
- harness HJ13
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific bristle brush No specific soft nose pliers
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2011 * stoddard solvent (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-029 Removal of the CJ13 Harness AMM 73-21-50-000-046 Removal of the HJ13 Harness AMM 73-21-50-210-002 Visual Inspection of the Wiring Harnesses AMM 73-21-50-400-029 Installation of the CJ13 Harness AMM 73-21-50-400-046 Installation of the HJ13 Harness AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU) AMM 73-21-60-400-001 Installation of the Electronic Control Unit (ECU) AMM 73-21-70-000-002 Removal of the High Pressure Turbine Clearance
Control (HPTCC) Sensor AMM 73-21-70-400-002 Installation of the High Pressure Turbine Clearance Control (HPTCC) Sensor AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring)
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3. Fault Confirmation
__________________
A. Do the operational test of the FADEC 1 on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
_______________
A. For configuration pre SB CFMI73-046
NOTE : The failure message is triggered if the TCC sensor channel A input
____ R is invalid (signal out of range) and the fault lasts for more than R 20 seconds.
(1) If the failure message TCC SNSR, J13, ECU is not confirmed:
(a) Do the following trouble shooting at next maintenance opportunity:
- disconnect the CJ13 connector (TCC-A) from the TCC sensor (9 O'Clock).
- visually examine the harness connector and sensor receptacle for damaged pins or contamination/oxidation. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机燃油和控制 1(69)
