Loss of the Oil Temperature Data on Engine 1

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1. Possible Causes
· THERMOCOUPLE SCAVENGE-OIL TEMPERATURE ( 4004EN )
· EIU-1 ( 1KS1 )
· wiring from the EIU 1 (1KS1) to the scavenge oil temperature thermocouple (4004EN)
· EEC ( 4000KS )
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 73-22-34-000-010 Removal of the Electronic Engine Control (EEC)
Ref. AMM 73-22-34-400-010 Installation of the Electronic Engine Control (EEC)
Ref. AMM 73-25-34-000-041 Removal of the Engine Interface Unit (EIU)
Ref. AMM 73-25-34-400-041 Installation of the Engine Interface Unit (EIU)
Ref. AMM 73-25-34-710-042 Operational Test of the EIU with the CFDS
Ref. AMM 79-32-16-000-010 Removal of the Scavenge Oil Temperature Thermocouple
Ref. AMM 79-32-16-400-010 Installation of the Scavenge Oil Temperature Thermocouple
Ref. ASM 79-36-01
3. Fault Confirmation
Subtask 79-32-00-710-086-A
A. Test
(1) Do the operational test of the EIU 1 with the CFDS Ref. AMM 73-25-34-710-042 .
4. Fault Isolation
Subtask 79-32-00-810-072-A
A. If the operational test gives the maintenance message EEC1 4000KS OR OIL TEMP SENSOR 1 4004EN:
· replace the THERMOCOUPLE SCAVENGE-OIL TEMPERATURE ( 4004EN ) , Ref.
AMM 79-32-16-000-010 and Ref. AMM 79-32-16-400-010 .
(1) If the fault continues:
· replace the EIU-1 ( 1KS1 ) , Ref. AMM 73-25-34-000-041 and Ref. AMM 73-25-34-400-041 .
(2) If the fault continues:
· do a check and repair the wiring from the EIU 1 (1KS1) to the scavenge oil temperature
thermocouple (4004EN) pin AA/10F to pin A/1 Ref. ASM 79-36-01.
(3) If the fault continues:
· replace the EEC ( 4000KS ) , Ref. AMM 73-22-34-000-010 Ref. AMM 73-22-34-400-010 .
Subtask 79-32-00-710-087-A
B. Do the test given in Para. 3. [Rev.6 from Feb 2017] 2026.04.04 04:38:29 UTC