(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 2
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 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 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.
- 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-A) from the TCC sensor (9 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.
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