DOC AIRBUS | TSM A320FLoss of the Oil Pressure Signal on Engine 2
1. Possible Causes
· XMTR-OIL PRESS ( 4003EN )
· SDAC-1 ( 1WV1 )
· SDAC-2 ( 1WV2 )
· EIU-2 ( 1KS2 )
· wiring from the EIU2 (1KS2) to the oil pressure transmitter (4003EN)
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External
Power
Ref. AMM 31-55-34-000-001 Removal of the SDAC
Ref. AMM 31-55-34-400-001 Installation of the SDAC
Ref. AMM 31-60-00-860-002 EIS Stop Procedure
Ref. AMM 70-23-15-912-010 Connection of Electrical Connectors
Ref. AMM 71-13-00-410-010 Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
Ref. AMM 71-50-00-210-010 Wire Harness Visual Inspection - All Power Plant Electrical Cables
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
REFERENCE DESIGNATION
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 79-33-00-710-096-A
A. Test
(1) Do the operational test of the EIU2 with the CFDS Ref. AMM 73-25-34-710-042 .
4. Fault Isolation
Subtask 79-33-00-810-077-A
A. If the test gives the maintenance message CHECK OIL PRESS XMTR2 CIRCUIT 4003EN:
· examine the harness Ref. AMM 71-50-00-210-010 from the oil pressure transmitter (4003EN) to the
EIU2 (1KS2) Ref. ASM 79-36-01.
(1) If the fault continues:
· disconnect the connector from the oil pressure transmitter (4003EN)
· examine the connector and the receptacle Ref. AMM 71-50-00-210-010
· connect the connector to the oil pressure transmitter (4003EN) Ref. AMM 70-23-15-912-010 .
(2) If the fault continues:
· replace the XMTR-OIL PRESS ( 4003EN ) Ref. AMM 79-33-15-000-010 and Ref.
AMM 79-33-15-400-010 .
(3) If the fault continues:
· replace the SDAC-1 ( 1WV1 ) Ref. AMM 31-55-34-000-001 and Ref. AMM 31-55-34-400-001
· If the fault continues:
· replace the SDAC-2 ( 1WV2 ) Ref. AMM 31-55-34-000-001 and Ref. AMM 31-55-34-400-001
(4) If the fault continues:
· replace the EIU-2 ( 1KS2 ) Ref. AMM 73-25-34-000-041 and Ref. AMM 73-25-34-400-041 .
(5) If the fault continues:
· do a check and repair the wiring from the EIU2 (1KS2) to the oil pressure transmitter (4003EN)
from pins AA/8D, 8B to pins A/4, 3 Ref. ASM 79-36-01.
(6) 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 79-33-00-710-097-A
B. Do the test given in Para. 3.
5. Close-up
Subtask 79-33-00-860-057-A
A. Put the aircraft back to its initial configuration.
(1) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
Ref. AMM 31-60-00-860-002 .
(2) De-energize the aircraft electrical circuits
Ref. AMM 24-41-00-862-002 .
(3) Make sure that the fan cowls 447AL and 448AR are closed Ref. AMM 71-13-00-410-010 . [Rev.6 from Feb 2017] 2026.04.04 04:38:30 UTC