- HJ13 harness
- ECU (4000KS)
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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AMM 73-21-50-000-029 Removal of the CJ13 Harness AMM 73-21-50-000-046 Removal of the HJ13 Harness AMM 73-21-50-210-001 Visual Inspection of the Wiring Harness AMM 73-21-50-400-029 Installation of the CJ13 Harness AMM 73-21-50-400-046 Installation of the HJ13 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 77-23-10-000-002 Removal of the Compressor Discharge Temperature (T3) Sensor AMM 77-23-10-400-002 Installation of the Compressor Discharge Temperature (T3) Sensor
3. Fault Confirmation
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A. Do the operational test of the FADEC 1A and 1B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
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A. The failure message is generated if channel B sensor signal is invalid or out of range.
R NOTE : If T3 sensor Part Number is 1348M21P01, P04 or P05, replace T3
____ R sensor (Ref. AMM TASK 77-23-10-000-002) and (Ref. AMM TASK 77-23-10-400-002).
R (1) If the failure messages T3 SNSR, J13, ECU + T3 SNSR, J13, ECU are not R confirmed:
- no maintenance action is required.
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ER (2) If the failure messages T3 SNSR, J13, ECU + T3 SNSR, J13, ECU are not R confirmed, but are repetitive:
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- visually examine the T3 thermocouple receptacle and the CJ13 harness connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-001).
R (a) If harness connector or T3 thermocouple receptacle is damaged:
- repair or replace as required.
(b) If no damage is found:
- visually examine the ECU (4000KS) receptacle and the HJ13 harness connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-001).
R 1_If harness connector or ECU receptacle is damaged:
- repair or replace as required.
2 If no damage is found:
_
- replace the T3 thermocouple (Ref. AMM TASK 77-23-10-000-002) and (Ref. AMM TASK 77-23-10-400-002).
R (c) If the fault continues during the subsequent flights:
- replace the CJ13 harness (Ref. AMM TASK 73-21-50-000-029) and (Ref. AMM TASK 73-21-50-400-029).
R (d) If the fault continues during the subsequent flights:
- replace the HJ13 harness (Ref. AMM TASK 73-21-50-000-046) and (Ref. AMM TASK 73-21-50-400-046).
R (e) If the fault continues during the subsequent flights:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
R (3) If the failure messages T3 SNSR, J13, ECU + T3 SNSR, J13, ECU are R confirmed: R - disconnect the two CJ13 connectors from the T3 thermocouple R - visually examine the T3 thermocouple receptacle and the CJ13 R harness connectors for damaged pins and contamination (Ref. AMM
TASK 73-21-50-210-001).
R (a) If harness connectors or T3 thermocouple receptacle are damaged:
- repair or replace as required.
(b) If no damage is found: R - do a resistance check of the two T3 thermocouple connectors R between:
. pins A and B (0.5 to 10 ohms) . pin A and the ground (> 10 megohms).
1 If the resistance values of one of the two T3 thermocouple
_ connectors are out of specified limits:
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- replace the T3 thermocouple (Ref. AMM TASK 77-23-10-000-002)
and (Ref. AMM TASK 77-23-10-400-002).
2_ If the resistance values are in the specified limits:
- reconnect the CJ13 harness to the T3 thermocouple
- disconnect the HJ13 harness from the ECU
- visually examine the ECU (4000KS) receptacle and the HJ13
harness connector for damaged pins and contamination (Ref.
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