Loss of the Oil Pressure Data on Engine 2

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1. Possible Causes
· XMTR-OIL PRESS ( 4003EN )
· EIU-2 ( 1KS2 )
· wiring of the pins AA/8D, 8B of the EIU 2 (1KS2) to the pins A/4,3 of the oil pressure transmitter (4003EN)
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 79-33-15-000-010 Removal of the Oil Pressure Transmitter
Ref. AMM 79-33-15-400-010 Installation of the Oil Pressure Transmitter
Ref. ASM 79-36-01
3. Fault Confirmation
Subtask 79-33-00-710-060-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 79-33-00-810-055-A
A. If the operational test gives the maintenance message CHECK OIL PRESS XMTR2 CIRCUIT 4003EN:
· replace the XMTR-OIL PRESS ( 4003EN ) , Ref. AMM 79-33-15-000-010 and Ref.
AMM 79-33-15-400-010 .
(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 of the pins AA/8D, 8B of the EIU 2 (1KS2) to the pins A/4,3 of the
oil pressure transmitter (4003EN) Ref. ASM 79-36-01.
(3) If the fault continues:
· do a check and repair the wiring from the oil pressure transmitter (4003EN) pin A/2 to the ground
point connection GP1-5 Ref. AWM 71-51-02.
Subtask 79-33-00-710-061-A
B. Do the test given in Para. 3. [Rev.6 from Feb 2017] 2026.04.04 04:38:29 UTC