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1 If the fault continues:
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- disconnect the harness J5 from the ECU (4000KS),
- do a resistance check between: . pins 7 and 8 (>10 megohms) . pins 7 and 11 (>10 megohms) . pin 7 and the ground (>10 megohms).
a If there is an electrical short or a short to ground:
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- replace the thrust reverser harness (Ref. AMM TASK 71-51-43-000-044) and (Ref. AMM TASK 71-51-43-400-044) or repair the aircraft wiring to the relay 14KS2 (Ref. ASM 73-25/16).
2 If nothing is found:
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- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
R (2) If the test does not give the maintenance message J5, TR ACFT SW, R ECU:
- replace the RELAY-THRUST REV INHIBITION, ENG 2 (14KS2) on 188VU (Ref. ASM 73-25/16).
(a) If the fault continues:
- replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(b) If the fault continues:
- replace the CTL UNIT-THROTTLE, ENG 2 (8KS2) (Ref. AMM TASK 76-11-19-000-042) and (Ref. AMM TASK 76-11-19-400-042).
(c) 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).
(d) If the fault continues:
R - do a check for a short to ground between (Ref. ASM 73-25/16): .the EIU2 (1KS2) pin AA/4C and the TCU2 (8KS2) pin E/C .the EIU2 (1KS2) pin AA/4A and the TCU1 (8KS2) pin E/C .the relay (14KS2) and its related wiring.
1 If nothing is found:
_
- replace the thrust reverser harness (Ref. AMM TASK 71-51-43-000-044) and (Ref. AMM TASK 71-51-43-400-044).
B. Do the test given in Para. 3.
(1) No additional maintenance action is required if the fault is not confirmed.
(2) Repeat the fault isolation procedure if the fault continues.
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Failure of the Thrust Reverser Inhibition Switch - Engine 1 - Channel B
1. Possible Causes
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- CTL UNIT-THROTTLE, ENG 1 (8KS1)
- EIU-1 (1KS1)
- RELAY-THRUST REV INHIBITION, ENG 1 (14KS1)
- thrust reverser harness
- aircraft wiring
- ECU (4000KS)
2. Job Set-up Information
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A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 71-51-43-000-044 Removal of the Thrust Reverser (Channel A and B) Harness (4200KS) AMM 71-51-43-400-044 Installation of the Thrust Reverser (Channel A and B)
Harness (4200KS) 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 73-25-34-000-040 Removal of the Engine Interface Unit (EIU) AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU) AMM 76-11-19-000-042 Removal of the Throttle Control Unit (8KS1, 8KS2) AMM 76-11-19-400-042 Installation of the Throttle Control Unit (8KS1,
8KS2) AMM 78-31-00-710-042 Operational Test of the Thrust Reverser System ASM 73-25/16 ASM 73-25/16 ASM 78-37/01
3. Fault Confirmation
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A. Make sure that the throttle lever is not in the thrust reverser area.
B. Do the operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-042).
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4. Fault Isolation
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A. This fault message is generated when the ECU detects an unwanted closure of the inhibition relay 14KS1 or a short or short to ground in the harness J6 or in the thrust reverser harness or in the aircraft wiring.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 动力装置 POWER PLANT(14)
