- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
F 『 EEFF : ALL E ∞∞73-20-00∞∞∞∞∞∞∞∞∞∞Page 243
E E Aug 01/01 ERE ECES
F 『 E C F M E E E E 56 E E E (b) If the fault continues:
- do a check for a short to ground at the harness J1 between the EIU 2 (1KS2) and the ECU (4000KS), pin AC/7 to pin J1/13.
1 If there is a short to ground:
_ - replace the harness J1.
2 If there is no short to ground:
_
- do a check for a short to ground at the aircraft wiring between EIU 2 (1KS2) pin AC/11 and the circuit breaker (2KS2).
a If there is a short to ground:
_ - repair the above wiring.
b If there is no short to ground:
_ - replace the C/B-ENGINE/2/FADEC A/AND EIU 2 (2KS2).
3 Make sure that 28VDC supplies the ESS bus (Ref. ASM 73-25/05).
_
B. Do the test given in Para. 3.B.
F 『 EEFF : ALL E ∞∞73-20-00∞∞∞∞∞∞∞∞∞∞Page 244
E E Aug 01/01 ERE
ECES
F 『
E C F M E
E E
E 56 E
E E
TASK 73-20-00-810-853
Loss of the T25 Sensor Signal through the Channel A on Engine 1
1. Possible Causes
_______________
- harness J11
- ECU (4000KS)
- harness CJ11R
- T25 temperature sensor
2. Job Set-up Information
______________________
R A. Fixtures, Tools, Test and Support Equipment
R -------------------------------------------------------------------------------R REFERENCE QTY DESIGNATION
R -------------------------------------------------------------------------------
R No specific bristle brush
R B. Consumable Materials
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION
R -------------------------------------------------------------------------------
R Material No. CP2011 *
R stoddard solvent (Ref. 70-30-00)
R C. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R AMM AMM AMM AMM AMM AMM AMM AMM AMM 73-21-20-000-002 73-21-20-400-002 73-21-50-000-026 73-21-50-000-044 73-21-50-210-002 73-21-50-400-026 73-21-50-400-044 73-21-60-000-001 73-21-60-400-001
AMM 73-29-00-710-040
ASM 73-25/18
F EEFF : ALL E E ECES Removal of the T25 Temperature SensorInstallation of the T25 Temperature SensorRemoval of the CJ11R HarnessRemoval of the HJ11 Harness Visual Inspection of the Wiring HarnessesInstallation of the CJ11R HarnessInstallation of the HJ11 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)
『E
∞∞73-20-00∞∞∞∞∞∞∞∞∞∞Page 245
E Aug 01/05EE
F 『
E C F M E
E E
E 56 E
E E
3. Fault Confirmation
__________________
A. Do the operational test of the FADEC 1A on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
_______________
A. If the test gives the maintenance message T25 SNSR, J11, ECU:
- do a check for open or short to ground of the harness J11 between the ECU (4000KS) and the 6 o'clock junction box, between the 6 o'clock junction box and the T25 temperature sensor pins J11/19, 37, 38 to pins J11/1, 2, 3 (Ref. ASM 73-25/18).
(1) If the wiring is not correct:
- repair the above wiring.
(2) If the wiring is correct: R - disconnect the harness J11 from the ECU (4000KS). R - do a visual inspection of the harness connector and receptacle. R Look for contamination or oxidation or pins that have damage. R - if you find damage, repair or replace as required. R - clean the connector and receptacle with a bristle brush and R stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-R 002). R - do a check of the ECU cable resistance between: R
. pins 37 and 38 (160 to 250 Ohms) . pins 37 and 19 (> 10 Megohms) . pin 37 and the ground (> 10 Megohms).
(a) 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).
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 发动机燃油和控制 1(82)
