- replace or repair as required.
(b) If nothing is found:
- do an electrical resistance test through the J4 harness between: . pins 17 and 30 (30 to 40 ohms) . pins 5 and 15 (15 to 25 ohms) . pins 29 and 28 (15 to 25 ohms) . pins 17 and 16 (> 10 megohms) . pins 5 and 16 (> 10 megohms) . pins 29 and 16 (> 10 megohms) . pin 17 and the ground (> 10 megohms) . pin 5 and the ground (> 10 megohms) . pin 29 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).
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2 If the resistance values are out of the specified limits:
_
- disconnect the connector 1208VC at the throttle control unit (8KS2) and do the resistance check at the throttle control unit connector between: . pins A, B (30 to 40 ohms) . pins C, D (15 to 25 ohms) . pins E, F (15 to 25 ohms) .pin A and the ground (> 10 megohms) .pin B and the ground (> 10 megohms) .pin C and the ground (> 10 megohms)
a If the resistance values are out of the specified limits:
_
- replace the CTL UNIT-THROTTLE, ENG2 (8KS2) (Ref. AMM TASK 76-11-19-000-040) and (Ref. AMM TASK 76-11-19-400-040).
b If the resistance values are in the specified limits:
_ - continue the troubleshooting.
(c) Do a check of the electrical wiring between the throttle control unit (8KS2) and the ECU (4000KS) (Ref. ASM 73-25/12).
1 if damage is found:
_
- replace or repair the above harness.
2 if nothing is found:
_ - continue the troubleshooting.
(d) Do a continuity and insulation check of this wiring
1 if damage is found:
_
- replace or repair the above harness.
2 if nothing is found:
_ - continue the troubleshooting.
(e) Do a pin retention check on connectors sockets.
1 if damage is found:
_
- replace or repair the above harness.
2 if nothing is found:
_ - continue the troubleshooting.
(f) Do a check for absence of corrosion or contamination. Pay particular attention to engine to pylon connector.
1 If damage is found:
_
- repair the A/C electrical wiring or replace the J4 harness (Ref. AMM TASK 71-51-44-000-004) and (Ref. AMM TASK 71-51-44-400-004) as required
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(1) No additionnal maintenance action is required if the fault is not confirmed.
(2) Repeat the fault isolation procedure if the fault continues.
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ENGINE MASTER CONTROL - FAULT ISOLATION PROCEDURES
__________________________________________________ TASK 76-12-00-810-805 Failure of the ENG 1/MASTER Control Switch
1. Possible Causes
_______________
- EIU-1 (1KS1)
- CTL SW-ENG/MASTER 1 (3KC)
- wiring from the EIU 1 (1KS1) to the ENG panel (115VU)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 71-00-00-710-002 AMM 73-25-34-000-040 AMM 73-25-34-400-040 AMM 73-25-34-710-043 ASM 76-12/01 Wet Motoring CheckRemoval of the Engine Interface Unit (EIU) (1KS1,1KS2)Installation of the Engine Interface Unit (EIU) (1KS1,1KS2)Operational Test of the Engine Interface Unit
3. Fault Confirmation__________________
A. Test
Do the operational test of the Engine Interface Unit (EIU) through the Centralized Fault Display System (CFDS) (Ref. AMM TASK 73-25-34-710-043).
4. Fault Isolation
_______________
A. If the test gives the maintenance message 115VU (MASTER LEVER 1) SW: R - replace the CTL SW-ENG/MASTER 1 (3KC) and perform the a motoring check R (Ref. AMM TASK 71-00-00-710-002).
(1) If the fault continues:
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040). 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 发动机控制(18)
