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3. Fault Confirmation
__________________
A. Do the operational test of the FADEC 2 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 B input
____ is invalid (signal out of range) and the fault lasts for more than 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-B) from the TCC sensor (3 O'Clock).
- visually examine the harness connector and sensor receptacle for damaged pins or contamination/oxidation.
- if damage is found, repair or replace as required.
- 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).
- connect the harness connector to the sensor. Tighten the connector by hand plus one eighth of a turn. If necessary use soft nose pliers.
(2) If the failure message TCC SNSR, J13, ECU is not confirmed but is repetitive:
(a) Do the following trouble shooting at next maintenance opportunity:
- disconnect the CJ13 connector (TCC-B) from the TCC sensor (3 O'Clock).
- do a cleaning of the harness connector using a bristle brush with stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
- replace the TCC sensor (Ref. AMM TASK 73-21-70-000-002) and (Ref. AMM TASK 73-21-70-400-002).
NOTE : Tighten the connector by hand plus one eighth of a turn.
____ If necessary use soft nose pliers.
1 If the fault continues:
_
- disconnect the harness HJ13 from the ECU (4000KS) connector and the 6 o'clock junction box.
- visually examine the harness connectors for damaged pins or contamination/oxidation.
- if damage is found, repair or replace as required.
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- do a cleaning of the connectors and receptacles using a bristle brush with stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
2 If the fault continues:
_
- replace the harness CJ13 (Ref. AMM TASK 73-21-50-000-029) and (Ref. AMM TASK 73-21-50-400-029).
3 If the fault continues:
_
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
4 If the fault continues:
_
- replace the harness HJ13 (Ref. AMM TASK 73-21-50-000-046) and (Ref. AMM TASK 73-21-50-400-046).
(3) If the failure message TCC SNSR, J13, ECU is confirmed:
(a) Disconnect the connector (TCC-B) on the harness CJ13 from the TCC sensor (3 O'Clock) and do a check of the resistance as follows:
- place the positive (+) lead of an ohmmeter on the TCC sensor pin A and the negative (-) lead of the ohmmeter on the TCC sensor pin B. Record as r1.
- place the positive (+) lead of an ohmmeter on the TCC sensor pin B and the negative (-) lead of the ohmmeter on the TCC sensor pin A. Record as r2. 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(131)
