Oil Low Press and Ground 1 Fault on EIU-2

TASK 73-25-00-810-A88-A
Oil Low Press and Ground 1 Fault on EIU-2

1. Possible Causes

RELAY-OIL LOW PRESS AND GROUND, ENG 2 [11KS2]
wiring
EIU-2 [1KS2]

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	MULTIMETER - STANDARD

B. Referenced Information

REFERENCE	DESIGNATION
AWM 732506
AMM 73-25-34-000-802	Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-802	Installation of the Engine Interface Unit (EIU)
AMM 73-25-34-710-802	Operational Test of the Engine Interface Unit (EIU) with the Centralized Fault Display System (CFDS)

3. Fault Confirmation
Subtask 73-25-00-710-527-A ** ON A/C NOT FOR ALL

A. Do the operational test of the Engine Interface Unit (EIU) with the Centralized Fault Display System (CFDS) to confirm this fault AMM 73-25-34-710-802.

4. Fault Isolation
Subtask 73-25-00-810-389-A ** ON A/C NOT FOR ALL

A. If there is confirmation of the fault:
(1) On RELAY BOX 103VU:
(a) Replace RELAY-OIL LOW PRESS AND GROUND, ENG 2 [11KS2] AWM 732506.
(b) Do the test given in Para. 3.
(2) If the fault continues, use a MULTIMETER - STANDARD to do a check of wiring between contact X and contact 9B at EIU-2 (1KS2) connector (AB) AWM 732506 for:
(a) Continuity (Less than 5 ohms resistance)
(b) Short to ground.
1 If you find damage, repair or replace wiring AWM 732506.
2 If you find no damage:
a Replace EIU-2 [1KS2] AMM 73-25-34-000-802 and AMM 73-25-34-400-802.
3 Install the relay (11KS2).
4 Do the test given in Para. 3.

5. Close-up
Subtask 73-25-00-860-131-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

[Rev.8 from Aug 2018] 2026.04.04 04:36:48 UTC