(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 SENS, 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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(a) If harness connectors or T3 thermocouple receptacle are damaged:
- repair or replace as required.
(b) If no damage is found:
- do a resistance check of the two T3 thermocouple connectors between: . pins A and B (0.5 to 10 ohms) . pin A and the ground (> 10 megohms).
1 If the resistance values of one of the two T3 thermocouple
_ connectors are out of specified limits:
- replace the T3 thermocouple (Ref. AMM TASK 77-23-10-000-001) and (Ref. AMM TASK 77-23-10-400-001).
2 If the resistance values are in the specified limits:
_
- reconnect the CJ13 harness to the T3 thermocouple
- disconnect the HJ13 harness from the ECU
- visually examine the ECU (4000KS) receptacle and the HJ13 harness connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-001).
a If harness connector or ECU receptacle is damaged:
_
- repair or replace as required.
b If no damage is found:
_
- do an electrical resistance test through the HJ13 harness between: . pins 4 and 5 (0.5 to 10 ohms) . pins 14 and 15 (0.5 to 10 ohms) . pins 4 and 16 (> 10 megohms) . pins 14 and 16 (> 10 megohms) . pin 4 and the ground (> 10 megohms) . pin 14 and the ground (> 10 megohms).
c 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).
d If the resistance values are out of the specified limits:
_
- reconnect the HJ13 harness
- disconnect the HJ13 harness from the CJ13 harness at the 6 o'clock junction box
- do an electrical resistance test through the CJ13 harness between: . pins 7 and 8 (0.5 to 10 ohms) . pins 1 and 10 (0.5 to 10 ohms) . pins 7 and 9 (> 10 megohms) . pins 1 and 9 (> 10 megohms) . pin 7 and the ground (> 10 megohms) . pin 1 and the ground (> 10 megohms).
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E 56 E E E e If the resistance values are out of the specified limits:
_
- replace the CJ13 harness (Ref. AMM TASK 73-21-50-000-029) and (Ref. AMM TASK 73-21-50-400-029).
f If the resistance values are in the specified limits:
_
- replace the HJ13 harness (Ref. AMM TASK 73-21-50-000-046) and (Ref. AMM TASK 73-21-50-400-046).
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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1. Possible Causes
Loss of the T3 Thermocouple Signal - Engine 2 - Channel B _______________
- T3 thermocouple
- CJ13 harness
- HJ13 harness
- ECU (4000KS)
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-029
AMM 73-21-50-000-046
AMM 73-21-50-210-001
AMM 73-21-50-400-029
AMM 73-21-50-400-046
AMM 73-21-60-000-001
AMM 73-21-60-400-001
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机指示(180)
