Disagree between the Idle Positions of the Two Engines

TASK 73-00-00-810-868-A
Disagree between the Idle Positions of the Two Engines

1. Possible Causes

aircraft wiring and connectors

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 73-25-00-810-853-A	Failure of the EIU on Engine 1
TSM TASK 73-25-00-810-854-A	Failure of the EIU on Engine 2
ASM 732508
ASM 732510

3. Fault Confirmation
Subtask 73-00-00-710-182-A ** ON A/C NOT FOR ALL

A. Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 73-00-00-810-117-A ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the crew observation: one engine is at approach idle while the other one is at modulated idle during descent:
(1) Do a check to make sure that the EIU of the engine which is at approach idle is not faulty (Ref. TSM TASK 73-25-00-810-853) or (Ref. TSM TASK 73-25-00-810-854).
(2) Do a check of the aircraft wiring and connectors between the SFCC (21CV) (22CV)/EIU (1KS1) (1KS2)/and the ECU (4000KS) of the engine which is at approach idle ASM 732508 and ASM 732510.

Subtask 73-00-00-710-183-A ** ON A/C NOT FOR ALL

B. After the subsequent flight, make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:35:11 UTC