F 『 E C F M E E E E 56 E E E 2 If the resistance values are out of the specified limits:
_
- replace the engine 2 T12 temperature sensor (Ref. AMM TASK 73-21-40-000-001) (Ref. AMM TASK 73-21-40-400-001)
B. Do the test given in Para. 3.A.
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TASK 73-20-00-810-861
Loss of T12 Sensor Signal through the Channel A on Engine 1
1. Possible Causes
_______________
- T12 temperature sensor
- ECU (4000KS)
- harness HJ9
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific bristle brush
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2011 *
stoddard solvent (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-40-000-001 Removal of the T12 Temperature Sensor AMM 73-21-40-400-001 Installation of the T12 Temperature Sensor AMM 73-21-50-000-042 Removal of the HJ9 Harness AMM 73-21-50-210-002 Visual Inspection of the Wiring Harnesses AMM 73-21-50-400-042 Installation of the HJ9 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)
ASM 73-25/18
3. Fault Confirmation
__________________
A. 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
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A. The failure message is generated if channel A input from the T12 temperature sensor is invalid or out of range.
(1) If the failure messsage T12 SNSR, J9, ECU is not confirmed:
- replace the T12 temperature sensor (Ref. AMM TASK 73-21-40-000-001) and (Ref. AMM TASK 73-21-40-400-001).
NOTE : Such a failure can be intermittent and therefore requires the
____ replacement of the T12 temperature sensor as a first maintenance action.
(2) If the failure message T12 SNSR, J9, ECU is not confirmed but is repetitive:
- do the following procedure after the replacement of the T12 temperature sensor.
(a) Disconnect the harness HJ9 from the T12 temperature sensor (C92 connector) (Ref. ASM 73-25/18):
- visually examine the receptacle and the connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-002).
1 If damage is found:
_ - repair or replace as required.
2 If no damage is found:
_
- do a cleaning of the connectors using a bristle brush and stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
3 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).
4 If the fault continues during the subsequent flights:
_
- replace the harness HJ9 (Ref. AMM TASK 73-21-50-000-042) and (Ref. AMM TASK 73-21-50-400-042).
(3) If the failure message T12 SNSR, J9, ECU is confirmed:
- replace the T12 temperature sensor (Ref. AMM TASK 73-21-40-000-001) and (Ref. AMM TASK 73-21-40-400-001).
(a) Disconnect the harness HJ9 from the T12 temperature sensor (C92 connector) (Ref. ASM 73-25/18):
- visually examine the receptacle and the connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-002).
1 If damage is found:
_ - repair or replace as required.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机燃油和控制 1(92)
