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. pins 1 and 2 (40 to 80 ohms)
for S/N different than 25451 and up: . pins 1 and 3 (>5 kiloohms)
R . pin 1 and the ground (>10 megohms)
for S/N 25451 and up: . pins 1 and 3 (>10 megohms)
R . pin 1 and the ground (>10 megohms).
a If the resistance values are out of the specified limits:
_
- replace the N1 sensor (4000EV) (Ref. AMM TASK 77-11-10-000-002) and (Ref. AMM TASK 77-11-10-400-002).
b If the resistance values are in the specified limits:
_ R - connect the HJ9 harness to the N1 sensor. R
R (b) Disconnect the HJ9 harness from the ECU (4000KS) and visually R examine the receptacle and the connector for damaged pins or R contamination (Ref. AMM TASK 73-21-50-210-002). R
1 If damage is found:
_ - repair or replace as required.
2 If no damage is found:
_ R - do the electrical resistance test through the HJ9 harness R between:
. pins 16 and 17 (40 to 80 ohms)
for S/N different than 25451 and up: . pins 16 and 6 (>5 kiloohms)
R . pin 16 and the ground (>10 megohms)
for S/N 25451 and up: . pins 16 and 6 (>10 megohms)
R . pin 16 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).
b If the resistance values are out of the specified limits:
_
- replace the HJ9 harness (Ref. AMM TASK 73-21-50-000-042) and (Ref. AMM TASK 73-21-50-400-042).
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(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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Loss of the Feedback Signal of the N1 Speed Sensor - Engine 1 - Channel B
1. Possible Causes
_______________
- SENSOR-N1 ROTATIONAL SPD (4000EV)
- ECU (4000KS)
- HJ10 harness
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific bristle brush
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2011 * stoddard solvent (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-043 Removal of the HJ10 Harness AMM 73-21-50-210-002 Visual Inspection of the Wiring Harnesses AMM 73-21-50-400-043 Installation of the HJ10 Harness 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 73-29-00-710-040 Operational Test of the FADEC on the Ground (with
Engine non Motoring) AMM 77-11-10-000-002 Removal of the N1 Speed Sensor (4000EV) AMM 77-11-10-400-002 Installation of the N1 Speed Sensor (4000EV)
3. Fault Confirmation
__________________
A. Do the operational test of the FADEC 1B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
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4. Fault Isolation
_______________
A. The failure message is generated if channel A and channel B inputs from R the N1 sensor disagree.
(1) If the failure message N1 SNSR, J10, ECU* is not confirmed: R
R (a) No maintenance action is required.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机指示(136)
