R a_ if damage is found:
R - replace or repair the above harness.
R b_ if nothing is found:
R - continue the troubleshooting as follows.
R 3_ Do a pin retention check on connectors sockets.
R a_ if damage is found:
R - replace or repair the above harness.
R b_ if nothing is found:
R - continue the troubleshooting as follows.
R 4_ Do a check for absence of corrosion or contamination. Pay
R particular attention to engine to pylon connectors.
R a_ If damage is found:
R - repair the A/C electrical wiring or replace the J3
R harness (Ref. AMM TASK 71-51-43-000-046) and (Ref. AMM
R TASK 71-51-43-400-046) as required.
R (2) If the test gives the maintenance messages TLA SNSR, J3, ECU and TLA
R SNSR, J4, ECU (confirmed on two channels):
R - Do the two following steps (3) and (4).
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(3) If the test gives the maintenance message TLA SNSR, J3, ECU (confirmed on channel A):
- Disconnect the J3 harness from the ECU (4000KS) receptacle and visually examine the ECU receptacle and the J3 harness connector for damaged pins or contamination (Ref. AMM TASK 73-21-50-210-002).
(a) If damage on a connector is found:
- replace or repair as required.
(b) If nothing is found:
- do an electrical resistance test through the J3 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).
2 If the resistance values are out of the specified limits:
_ R - disconnect the connector CC at the throttle control unit R (8KS1) 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, ENG1 (8KS1) (Ref. AMM TASK 76-11-19-000-042) and (Ref. AMM TASK 76-11-19-400-042).
b If the resistance values are in the specified limits:
_
- continue the troubleshooting as follows:
(c) Do a check of the electrical wiring between the throttle control unit (8KS1) 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 as follows.
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R (d) Do a continuity and insulation check of this wiring.
R 1_ if damage is found:
R - replace or repair the above harness.
R 2_ if nothing is found:
R - continue the troubleshooting as follows.
R (e) Do a pin retention check on connectors sockets.
R 1_ if damage is found:
R - replace or repair the above harness.
R 2_ if nothing is found:
R - continue the troubleshooting as follows.
R (f) Do a check for absence of corrosion or contamination. Pay
R particular attention to engine to pylon connector.
R 1_ If damage is found:
R - repair the A/C electrical wiring or replace the J3 harness
R (Ref. AMM TASK 71-51-43-000-046) and (Ref. AMM TASK 71-51-
43-400-046).
R (4) If the test gives the maintenance message TLA SNSR, J4, ECU
R (confirmed on channel B):
R - Disconnect the J4 harness from the ECU (4000KS) receptacle and
R visually examine the ECU receptacle and the J4 harness connector
R for damaged pins or contamination (Ref. AMM TASK 73-21-50-210-002).
R (a) If damage on a connector is found:
R - replace or repair as required.
R (b) If nothing is found:
R - do an electrical resistance test through the J4 harness
R between:
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 發動機控制(3)
