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 73-21-50-210-001).
R (a) If harness connector or T3 thermocouple receptacle is damaged: R - repair or replace as required.
R (b) If no damage is found: R - visually examine the ECU (4000KS) receptacle and the HJ13 R 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:
R - repair or replace as required.

R 2_ If no damage is found:
R - replace the T3 thermocouple (Ref. AMM TASK 77-23-10-000-002)
R and (Ref. AMM TASK 77-23-10-400-002).

R (c) If the fault continues during the subsequent flights:
R - replace the CJ13 harness (Ref. AMM TASK 73-21-50-000-029) and
R (Ref. AMM TASK 73-21-50-400-029).

R (d) If the fault continues during the subsequent flights:
R - replace the HJ13 harness (Ref. AMM TASK 73-21-50-000-046) and
R (Ref. AMM TASK 73-21-50-400-046).

R (e) If the fault continues during the subsequent flights:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and
R (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:
R - repair or replace as required.

R (b) If no damage is found:
R - do a resistance check of the two T3 thermocouple connectors
R between:

R . pins A and B (0.5 to 10 ohms)

R . pin A and the ground (> 10 megohms).

R 1_ If the resistance values of one of the two T3 thermocoupleR 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.
 AMM TASK 73-21-50-210-001).
 a If harness connector or ECU receptacle is damaged:_
 - repair or replace as required.
 b If no damage is found:_
 - do an electrical resistance test through the HJ13 harness
 between:
 . pins 4 and 5 (0.5 to 10 ohms) 
R  . pins 14 and 15 (0.5 to 10 ohms)
 . pins 4 and 16 (> 10 megohms)
 . pins 14 and 16 (> 10 megohms)
 . pin 4 and the ground (> 10 megohms)
 . pin 14 and the ground (> 10 megohms).
 c 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).
 d If the resistance values are out of the specified limits:_
 - reconnect the HJ13 harness
 - disconnect the HJ13 harness from the CJ13 harness at the
 6 o'clock junction box
 - do an electrical resistance test trough the CJ13 harness
 between:
 . pins 7 and 8 (0.5 to 10 ohms)
 . pins 1 and 10 (0.5 to 10 ohms)
 . pins 7 and 9 (> 10 megohms)
 . pins 1 and 9 (> 10 megohms)
 . pin 7 and the ground (> 10 megohms)
 . pin 1 and the ground (> 10 megohms).
 e If the resistance values are out of the specified limits:_
 - replace the CJ13 harness (Ref. AMM TASK 73-21-50-000-029)
 and (Ref. AMM TASK 73-21-50-400-029).
 f If the resistance values are in the specified limits:_
 - replace the HJ13 harness (Ref. AMM TASK 73-21-50-000-046)
 and (Ref. AMM TASK 73-21-50-400-046).

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