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R B. Do the test given in Para. 3.A.
R (1) No additional maintenance action is required if the fault is not
R confirmed.
R (2) Repeat the fault isolation procedure if the fault continues.
R
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TASK 77-20-00-810-809
Loss of the T3 Thermocouple Signal - Engine 1 - Channel A
1. Possible Causes
_______________
- T3 thermocouple
- CJ13 harness
- HJ13 harness
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
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AMM 73-21-50-000-029 Removal of the CJ13 Harness
AMM 73-21-50-000-046 Removal of the HJ13 Harness
AMM 73-21-50-210-001 Visual Inspection of the Wiring Harness
R 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 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring) AMM 77-23-10-000-001 Removal of the Compressor Discharge Temperature (T3) Sensor AMM 77-23-10-000-002 Removal of the Compressor Discharge Temperature (T3) Sensor AMM 77-23-10-400-001 Installation of the Compressor Discharge Temperature (T3) Sensor AMM 77-23-10-400-002 Installation of the Compressor Discharge Temperature (T3) Sensor
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the FADEC 1A on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
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4. Fault Isolation
_______________
A. The failure message is generated if channel A sensor signal is invalid or out of range.
NOTE : If T3 sensor Part Number is 1348M21P01, P04 or P05, replace T3
____ sensor (Ref. AMM TASK 77-23-10-000-001) and (Ref. AMM TASK 77-23-10-400-001).
(1) If the failure message T3 SNSR, J13, ECU is not confirmed:
- no maintenance action is required.
(2) If the failure message T3 SNSR, J13, ECU is not confirmed, but is repetitive:
- visually examine the T3 thermocouple receptacle and the CJ13 R harness connector for damaged pins and contamination (Ref. AMM TASK R 73-21-50-210-002).
(a) If harness connector or T3 thermocouple receptacle is damaged:
- repair or replace as required.
(b) If no damage is found:
- visually examine the ECU (4000KS) receptacle and the HJ13 harness connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-001).
1 If harness connector or ECU receptacle is damaged:
_ - repair or replace as required.
2 If no damage is found:
_
- replace the T3 thermocouple (Ref. AMM TASK 77-23-10-000-002) and (Ref. AMM TASK 77-23-10-400-002).
(c) If the fault continues during the subsequent flights:
- replace the CJ13 harness (Ref. AMM TASK 73-21-50-000-029) and (Ref. AMM TASK 73-21-50-400-029).
(d) If the fault continues during the subsequent flights:
- replace the HJ13 harness (Ref. AMM TASK 73-21-50-000-046) and (Ref. AMM TASK 73-21-50-400-046).
(e) If the fault continues during the subsequent flights:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
(3) If the failure message T3 SNSR, J13, ECU is confirmed:
- disconnect the two CJ13 connectors from the T3 thermocouple
- visually examine the T3 thermocouple receptacle and the CJ13 harness connectors for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-001).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机指示(170)
