(b) If the resistance values are out of the specified limits:

 - replace the defective harness J9 (Ref. AMM TASK 73-21-50-000-042) and (Ref. AMM TASK 73-21-50-400-042) or

 - replace the defective harness J10 (Ref. AMM TASK 73-21-50-000-043) and (Ref. AMM TASK 73-21-50-400-043).

 (3) If the fault continues:
 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 B. Do the test given in Para. 3.A.
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 Failure of the Starter Shutoff Valve on Engine 1
 1. Possible Causes
_______________

 - starter shutoff valve (SAV)

 - starter

 - harness J10

 - ECU (4000KS)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-043 Removal of the HJ10 Harness AMM 73-21-50-400-043 Installation of the HJ10 Harness R 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 R (ECU)(4000KS) AMM 73-29-00-710-040 Operational Test of the FADEC on the ground (with
 Engine Motoring)
 AMM 80-11-10-000-002 Removal of the Pneumatic Starter
 AMM 80-11-10-400-002 Installation of the Pneumatic Starter
 AMM 80-11-20-000-003 Removal of the Starter Shutoff Valve
 AMM 80-11-20-400-003 Installation of the Starter Shutoff Valve

 3. Fault Confirmation
__________________
 A. Test

 (1) Do the operational test of the FADEC 1B on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
 4. Fault Isolation
_______________

 A. If the test gives the maintenance message START AIR, SAV:
 - do a check for open or short to ground at pins J10/11, 12 of the harness J10 between the ECU (4000KS) and the starter shutoff valve.
 (1) If the wiring is not correct:

 - repair the above wiring.

 (2) If the wiring is correct:

 - disconnect the harness J10 from the ECU (4000KS) and do a check of the ECU resistance cable between: . pins 11 and 12 (10 to 60 Ohms).
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 - do a check for low starter air duct pressure.
 1 If the starter air duct pressure is in the specified limits
_
 (11 PSI < P < 60 PSI):

 - replace the starter shutoff valve (SAV) (Ref. AMM TASK 80-11-20-000-003) (Ref. AMM TASK 80-11-20-400-003)

 - replace the starter (Ref. AMM TASK 80-11-10-000-002) (Ref. AMM TASK 80-11-10-400-002).

 (b) If the resistance values are out of the specified limits:
 - remove the harness J10 from SAV and do a check of the SAV resistance between: . pins : 1 and 2 (10 to 60 Ohms).
 1 If the resistance values are in the specified limits:
_

 - replace the harness J10 (Ref. AMM TASK 73-21-50-000-043) (Ref. AMM TASK 73-21-50-400-043).
 2 If the resistance values are out of the specified limits:
_

 - replace the starter shutoff valve (SAV) (Ref. AMM TASK 80-11-20-000-003) (Ref. AMM TASK 80-11-20-400-003).
 (3) If the fault continues:
 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) (Ref. AMM TASK 73-21-60-400-001).
 B. Do the test given in Para. 3.A.
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 Failure of the Starter Shutoff Valve on Engine 2
 1. Possible Causes
_______________

 - starter shutoff valve (SAV)

 - starter

 - harness J10

 - ECU (4000KS)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
　
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