3. Fault Confirmation
__________________
A. Test
Removal of the CJ13 HarnessRemoval of the HJ13 HarnessVisual Inspection of the Wiring HarnessInstallation of the CJ13 HarnessInstallation of the HJ13 HarnessRemoval of the Electronic Control Unit (ECU)Installation of the Electronic Control Unit (ECU)Operational Test of the FADEC on the Ground (with Engine non Motoring)Removal of the Compressor Discharge Temperature (T3) SensorRemoval of the Compressor Discharge Temperature (T3) SensorInstallation of the Compressor Discharge Temperature (T3) SensorInstallation of the Compressor Discharge Temperature (T3) Sensor
(1) Do the operational test of the FADEC 2B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
_______________
A. The failure message is generated if channel B 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).
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(1) If the failure message T3 SENS, J13, ECU is not confirmed:
- no maintenance action is required.
(2) If the failure message T3 SENS, J13, ECU is not confirmed, but is repetitive:
- visually examine the T3 thermocouple receptacle and the CJ13 harness connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-001).
(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 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).
(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).
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_ connectors are out of specified limits:
- replace the T3 thermocouple (Ref. AMM TASK 77-23-10-000-002) and (Ref. AMM TASK 77-23-10-400-002).
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).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 發動機指示(181)
