Loss of the Oil Temperature Data on Engine 2

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1. Possible Causes
· THERMOCOUPLE SCAVENGE-OIL TEMPERATURE ( 4004EN )
· EIU-2 ( 1KS2 )
· wiring from the pin AA/10F of the EIU 2 (1KS2) to the pin A/1 of the scavenge oil temperature thermocouple
(4004EN)
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AWM 71-51-02
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 79-32-00-710-052-A
A. Test
(1) Do the operational test of the EIU 2 with the CFDS Ref. AMM 73-25-34-710-042 .
4. Fault Isolation
Subtask 79-32-00-810-051-A
A. If the operational test gives the maintenance message OIL TEMP SENSOR 2 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-2 ( 1KS2 ) , 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 pin AA/10F of the EIU 2 (1KS2) to the pin A/1 of the
scavenge oil temperature thermocouple (4004EN) , Ref. ASM 79-36-01.
(3) If the fault continues:
· do a check and repair the wiring from the scavenge oil temperature thermocouple (4004EN) pin A/3
to the ground point connection GP2-6 Ref. AWM 71-51-02.
Subtask 79-32-00-710-053-A
B. Do the test given in Para. 3. [Rev.6 from Feb 2017] 2026.04.04 04:38:28 UTC