R . pins 17 and 30 (30 to 40 ohms)
R . pins 5 and 15 (15 to 25 ohms)
R . pins 29 and 28 (15 to 25 ohms)
R . pins 17 and 16 (> 10 megohms)
R . pins 5 and 16 (> 10 megohms)
R . pins 29 and 16 (> 10 megohms)
R . pin 17 and the ground (> 10 megohms)
R . pin 5 and the ground (> 10 megohms)
R . pin 29 and the ground (> 10 megohms).
R 1_ If the resistance values are in the specified limits:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001)
R and (Ref. AMM TASK 73-21-60-400-001).
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2 If the resistance values are out of the specified limits:
_ R - disconnect the connector DD 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.
(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 as follows.
(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 as follows.
(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 71-51-43-000-047) and (Ref. AMM TASK 71-51-43-400-047) as required
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R B. Do the test given in Para. 3.A.
R (1) No additionnal maintenance action is required if the fault is not
R confirmed.
R (2) Repeat the fault isolation procedure if the fault continues.
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TASK 76-11-00-810-804
Loss of the TLA Resolver Signal through the two Channels on Engine 2
1. Possible Causes
_______________
- ECU (4000KS) R
- CTL UNIT-THROTTLE, ENG2 (8KS2) R - A/C electrical wiring R - J3 harness R - J4 harness
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R R R AMM AMM AMM AMM AMM AMM AMM AMM 71-51-43-000-046 71-51-43-000-047 71-51-43-400-046 71-51-43-400-047 73-21-50-210-002 73-21-60-000-001 73-21-60-400-001 73-29-00-710-040
AMM AMM 76-11-19-000-042 76-11-19-400-042
ASM 73-25/12
3. Fault Confirmation__________________
Removal of the ECU (Channel A) Harness (4211KS)
Removal of the ECU (Channel B) Harness (4212KS)
Installation of the ECU (Channel A) Harness (4211KS)
Installation of the ECU (Channel B) Harness (4212KS)
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