A320 Trouble Shooting Manual 排故手册 大气 AIR(9)

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R  3_If the resistance values are not in the specified limits:
 - replace the High Pressure Turbine Clearance Control (HPTCC) Valve (Ref. AMM TASK 75-21-10-000-002) and (Ref. AMM TASK 75-21-10-400-002).
R  4_If the resistance values are in the specified limits:
 - disconnect the harnesses HJ11 and HJ12 from the harnesses CJ11R and CJ12R at the 6 o'clock junction box and do a check of the resistance of the harnesses CJ11R and CJ12R between:
 - for harness CJ11R
 . pins 29 and 30 (68 to 102 ohms)
 . pins 18 and 31 (30 to 42 ohms)
 . pins 16 and 28 (22 to 30 ohms)
 . pins 29 and 17 (> 10 Megohms)
 . pins 18 and 17 (> 10 Megohms)
 . pins 16 and 17 (> 10 Megohms)
 . pin 29 and the ground (> 10 Megohms)
 . pin 18 and the ground (> 10 Megohms)

R  . pin 16 and the ground (> 10 Megohms).

 - for harness CJ12R
 . pins 16 and 6 (68 to 102 ohms)
 . pins 19 and 18 (30 to 42 ohms)
 . pins 20 and 8 (22 to 30 ohms)
 . pins 17 and 7 (> 10 Megohms)

R  . pins 19 and 7 (> 10 Megohms) . pins 20 and 7 (> 10 Megohms) . pin 17 and the ground (> 10 Megohms) . pin 19 and the ground (> 10 Megohms)

R  . pin 20 and the ground (> 10 Megohms).

 a If the resistance values are in the specified limits:
_
 - replace the harness HJ11 (Ref. AMM TASK 73-21-50-000-044) and (Ref. AMM TASK 73-21-50-400-044) and/or harness HJ12 (Ref. AMM TASK 73-21-50-000-045) and (Ref. AMM TASK 73-21-50-400-045).
R
R  b_If the resistance values are not in the specified limits:
 - replace the harness CJ11R (Ref. AMM TASK 73-21-50-000-026) and (Ref. AMM TASK 73-21-50-400-026) and/or harness CJ12R (Ref. AMM TASK 73-21-50-000-028) and (Ref. AMM TASK 73-21-50-400-028).
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 E 56 E E E NOTE : Tighten the connector by hand plus one eighth of a

____ turn. If necessary use soft nose pliers.
 B. Do the test given in para. 3.
 (1) No additional maintenance action is required if the fault is not confirmed.
R (2) Continue the fault isolation procedure if the fault continues.
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 Loss of the Feedback Signal from the HPTCC Valve through the two Channels on Engine 2
 1. Possible Causes
_______________
 - High Pressure Turbine Clearance Control (HPTCC) Valve

 - ECU (4000KS)

 - harness HJ11

 - harness HJ12

 - harness CJ11R

 - harness CJ12R

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM  73-21-50-000-026 
AMM  73-21-50-000-028 
AMM  73-21-50-000-044 
AMM  73-21-50-000-045 
AMM  73-21-50-400-026 
AMM  73-21-50-400-028 
AMM  73-21-50-400-044 
AMM  73-21-50-400-045 
AMM  73-21-60-000-001 
AMM  73-21-60-400-001 
AMM  73-29-00-710-040 
AMM  75-21-10-000-002 
AMM  75-21-10-400-002 

3. Fault Confirmation
__________________
 A. Test
Removal of the CJ11R HarnessRemoval of the CJ12R HarnessRemoval of the HJ11 HarnessRemoval of the HJ12 HarnessInstallation of the CJ11R HarnessInstallation of the CJ12R HarnessInstallation of the HJ11 HarnessInstallation of the HJ12 HarnessRemoval of the Electronic Control Unit (ECU)(4000KS)Installation of the Electronic Control Unit (ECU)(4000KS)Operational Test of the FADEC on the Ground (with Engine non Motoring)Removal of the High Pressure Turbine Active Clearance Control (HPTACC) ValveInstallation of the High Pressure Turbine Active Clearance Control (HPTACC) Valve
 (1) Do the operational test of the FADEC 2 on the ground with engine non motoring (Ref. AMM TASK 73-29-00-710-040).
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