EIU-1/EEC Position Disagree

TASK 73-25-00-810-A65-A
EIU-1/EEC Position Disagree

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 73-00-00-810-938-A	Engine Position Failure
AWM 732503
AMM 73-25-34-710-802	Operational Test of the Engine Interface Unit (EIU) with the Centralized Fault Display System (CFDS)
AMM 73-25-34-860-806	Engine Interface Unit (EIU) DISCRETE INPUTS Menu Data Status

3. Fault Confirmation
Subtask 73-25-00-710-505-A ** ON A/C NOT FOR ALL

A. Do the test as follows:
(1) 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 73-25-00-810-352-A ** ON A/C NOT FOR ALL

A. If there is confirmation of the fault:
(1) Check the status of EIU-1 discrete input for engine 1 AMM 73-25-34-860-806.
(a) Check the status of engine 1 is 1.
(b) If the status of engine 1 is not 1, repair or replace the aircraft wiring to have the pin 3A of connector AA at ground AWM 732503.
(c) Do the test given in Para. 3.
(2) If the status is correct or if the fault continues, check for an engine position failure (Ref. TSM TASK 73-00-00-810-938).
(a) Do the test given in Para. 3.

5. Close-up
Subtask 73-25-00-860-109-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 04:36:45 UTC