R R  4_ If the resistance values are in the specified limits: - disconnect the harness HJ11 from the harness CJ11R at the 6 o'clock junction box and do a check of the resistance of the harness CJ11R between: . 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) . pin 16 and the ground (> 10 Megohms).
R  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). 
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).
 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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 TASK 75-21-00-810-810
 Loss of the Feedback Signal on Channel A of the HPTCC Valve on Engine 2
 1. Possible Causes
_______________
 - High Pressure Turbine Clearance Control (HPTCC) Valve

 - ECU (4000KS)

 - harness HJ11

 - harness CJ11R

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-026 Removal of the CJ11R Harness AMM 73-21-50-000-044 Removal of the HJ11 Harness AMM 73-21-50-400-026 Installation of the CJ11R Harness AMM 73-21-50-400-044 Installation of the HJ11 Harness AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU)(4000KS) AMM 73-21-60-400-001 Installation of the Electronic Control Unit
 (ECU)(4000KS) AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring) AMM 75-21-10-000-002 Removal of the High Pressure Turbine Active Clearance Control (HPTACC) Valve AMM 75-21-10-400-002 Installation of the High Pressure Turbine Active Clearance Control (HPTACC) Valve
 3. Fault Confirmation
__________________
 A. Test
 (1) 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. This failure message is triggered when there is a disagreement between channels A and B position signals from the HPTCC Valve or one or both signals is out of range.
 (1) If the failure message HPTC VLV, J11, ECU is not confirmed:
 (a) No maintenance action required.
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 (2) If the failure message HPTC VLV, J11, ECU is not confirmed but is repetitive:

 (a) Do the following trouble shooting at next maintenance
 opportunity: R - replace the High Pressure Turbine Clearance Control (HPTCC) R Valve (Ref. AMM TASK 75-21-10-000-002) and (Ref. AMM TASK 75-
21-10-400-002).
 1 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).
 NOTE : Tighten the connector by hand plus one eighth of a
____ turn. If necessary use soft nose pliers.
 (3) If the failure message HPTC VLV, J11, ECU is confirmed:
R  (a) Disconnect the harness HJ11 from the ECU and do a resistance
R  check of the harness HJ11 between: . pins 34 and 35 (68 to 102 Ohms) . pins 18 and 36 (30 to 42 Ohms) . pins 16 and 33 (22 to 30 Ohms) . pins 34 and 17 (> 10 Megohms) . pins 18 and 17 (> 10 Megohms) . pins 16 and 17 (> 10 Megohms) . pin 34 and the ground (> 10 Megohms) . pin 18 and the ground (> 10 Megohms)
R  . pin 16 and the ground (> 10 Megohms).
 1 If the resistance values are in the specified limits:
_
 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 2 If the resistance values are not in the specified limits:
_ R - disconnect the harness CJ11R from the HPTCC Valve and do a R resistance check of the HPTCC Valve between:
　
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