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 2 If no damage is found:

_
R  - clean the connector and receptacle with a bristle brush and
R  stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
 - do the electrical resistance test through the T12 temperature sensor between: . pins 1 and 2 (160 to 250 ohms) . pin 1 and the ground (>10 megohms).
 3 If the resistance values are out of the specified limits:
_
 - replace the T12 temperature sensor (Ref. AMM TASK 73-21-40-000-001) and (Ref. AMM TASK 73-21-40-400-001).
 4 If the resistance values are in the specified limits:
_
 - connect the harness HJ10 to the T12 temperature sensor (C102 connector),

 - disconnect the harness HJ10 from the ECU (4000KS) (Ref. ASM 73-25/18),

 - visually examine the receptacle and the connector for damaged pins and contamination (Ref. AMM TASK 73-21-50-210-002).

 a If damage is found:
_
 - repair or replace as required.
 b If no damage is found:
_
R  - clean the connector and receptacle with a bristle brush
R  and stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
 - do the electrical resistance test through the harness HJ10 between: . pins 18 and 19 (160 to 250 ohms) . pins 18 and 7 (>10 megohms) . pin 18 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:
_
 - replace the harness HJ10 (Ref. AMM TASK 73-21-50-000-043) and (Ref. AMM TASK 73-21-50-400-043).
 B. Do the test given in Para. 3.
 (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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 TASK 73-20-00-810-865

 Failure of the PS12 Signal on Engine 1
 1. Possible Causes
_______________
 - PS12 Sense Line

 - ECU (4000KS)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 72-23-00-000-040 Removal of the PS12 Line AMM 72-23-00-280-002 Inspection/Check of the PS12 line AMM 72-23-00-400-040 Installation of the PS12 Line AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU)(4000KS) AMM 73-21-60-400-001 Installation of the Electronic Control Unit
 (ECU)(4000KS)
 3. Fault Confirmation
__________________
 A. Test
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. Test
 (1) Inspect the PS12 Sense Line for loose connections, broken tubes and brackets or blocked ports (Ref. AMM TASK 72-23-00-280-002).

 (a) If damage is found:

 - replace, retighten or repair PS12 Sense Line (Ref. AMM TASK 72-23-00-000-040), (Ref. AMM TASK 72-23-00-400-040).

 (b) If nothing is found:

 - continue the troubleshooting as follows.

 (2) Do an operational test of the ECU (4000KS)

 (a) If the test gives the maintenance message ECU (PS12 SENSOR):

 - replace the ECU (Ref. AMM TASK 73-21-60-000-001) (Ref. AMM TASK 73-21-60-400-001).

 (b) If the test does not give the maintenance message:

 - no action is required.
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 TASK 73-20-00-810-866

 Failure of the PS12 Signal on Engine 2
 1. Possible Causes
_______________
 - PS12 Sense Line

 - ECU (4000KS)

 2. Job Set-up Information
　
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