Failure of the PS12 Signal on Engine 1

TASK 73-20-00-810-947-A
Failure of the PS12 Signal on Engine 1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 73-21-60-000-001	Removal of the Electronic Control Unit (ECU)
AMM 73-21-60-400-001	Installation of the Electronic Control Unit (ECU)
AMM 73-29-00-710-040	Operational Test of the FADEC on the ground (with Engine Motoring)

3. Fault Confirmation
Subtask 73-20-00-710-268-A ** ON A/C NOT FOR ALL

A. Do the operational test of the FADEC 1B on the ground (with engine non motoring) AMM 73-29-00-710-040.

4. Fault Isolation
Subtask 73-20-00-810-253-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message PS12 SENS LINE, ECU:

Subtask 73-20-00-810-253-B ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message ECU (PS12 SENSOR):

[Rev.8 from Aug 2018] 2026.04.04 04:35:29 UTC