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R 1_ If damage is found:
R - repair or replace as required.
R 2_ If no damage is found:
R - do an electrical resistance test through the HJ12 harness
R between:
R . pins 4 and 5 (80 to 109.5 ohms)
R . pins 6 and 7 (85 to 115 ohms)
R . pins 2 and 3 (85 to 115 ohms)
R . pins 4 and 1 (> 10 megohms)
R . pins 6 and 1 (> 10 megohms)
R . pins 2 and 1 (> 10 megohms)
R . pin 4 and the ground (> 10 megohms)
R . pin 6 and the ground (> 10 megohms)
R . pin 2 and the ground (> 10 megohms).
R 3_ If the resistance values are in the specified limits:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001)
R and (Ref. AMM TASK 73-21-60-400-001).
R 4_ If the resistance values are out of the specified limits:
R - disconnect the HJ12 harness from the CJ12R harness located
R at the 6 o'clock junction box and do an electrical
R resistance test through the CJ12R harness between:
R . pins 20 and 21 (80 to 109.5 ohms)
R . pins 7 and 19 (85 to 115 ohms)
R . pins 2 and 9 (85 to 115 ohms)
R . pins 20 and 8 (> 10 megohms)
R . pins 7 and 8 (> 10 megohms)
R . pins 2 and 8 (> 10 megohms)
R . pin 20 and the ground (> 10 megohms)
R . pin 7 and the ground (> 10 megohms)
R . pin 2 and the ground (> 10 megohms).
R 5_ If the resistance values are in the specified limits:
R - replace the harness HJ12 (ECU to the 6 o'clock junction box)
R (Ref. AMM TASK 73-21-50-000-045) and (Ref. AMM TASK 73-21-R 50-400-045).
R 6_ If the resistance values are out of the specified limits:
R - replace the harness CJ12R (Ref. AMM TASK 73-21-50-000-028)
R and (Ref. AMM TASK 73-21-50-400-028).
R **ON A/C ALL
R B. Do the test given in Para. 3.A.
R (1) No additional maintenance action is required if the fault is not
R confirmed.
R (2) Repeat the fault isolation procedure if the fault continues.
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R TASK 75-22-00-810-808
R Loss of the Feedback Signals from the LPTC Valve - Engine 2 - Channel A and R Channel B
R 1. Possible Causes
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R - LPTC valve R - ECU (4000KS) R - harness J11 R - harness CJ11R R - harness J12 R - harness CJ12R R - harness HJ11 R - harness HJ12
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 73-21-50-000-002
R AMM 73-21-50-000-004
R AMM 73-21-50-000-010
R AMM 73-21-50-000-011
R AMM 73-21-50-000-026
R AMM 73-21-50-000-028
R AMM 73-21-50-000-044
R AMM 73-21-50-000-045
R AMM 73-21-50-210-001
R AMM 73-21-50-210-002
R AMM 73-21-50-400-002
R AMM 73-21-50-400-004
R AMM 73-21-50-400-010
R AMM 73-21-50-400-011
R AMM 73-21-50-400-026
R AMM 73-21-50-400-028
R AMM 73-21-50-400-044
R AMM 73-21-50-400-045
R AMM 73-21-60-000-001
R AMM 73-21-60-000-001
R AMM 73-21-60-400-001
R
R AMM 73-21-60-400-001
R AMM 73-29-00-710-040
R
R AMM 75-22-10-000-001
R
F EEFF : ALL E E ECES Removal of the CJ11R Harness Removal of the CJ12R Harness Removal of the J11 Harness Removal of the J12 Harness Removal of the CJ11R Harness Removal of the CJ12R Harness Removal of the HJ11 Harness Removal of the HJ12 Harness Visual Inspection of the Wiring Harness Visual Inspection of the Wiring Harnesses Installation of the CJ11R Harness Installation of the CJ12R Harness Installation of the J11 Harness Installation of the J12 Harness Installation of the CJ11R Harness Installation of the CJ12R Harness Installation of the HJ11 Harness Installation of the HJ12 Harness Removal of the Electronic Control Unit (ECU)(4000KS) Removal of the Electronic Control Unit (ECU) Installation of the Electronic Control Unit (ECU)(4000KS) Installation of the Electronic Control Unit (ECU) Operational Test of the FADEC on the Ground (with Engine non Motoring) Removal of the Low Pressure Turbine Active Clearance Control Valve (LPTACC). 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 大气 AIR(30)
