Engine Non motoring)
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the FADEC 1B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
 4. Fault Isolation
_______________
 A. The P25 signal is part of the PMUX option only used for Engine Condition Monitoring.
 NOTE : If the engine is not equipped in a PMUX configuration, you have
____
 two options:

 - replace the engine Identification Connector by a connector configured as Non PMUX to definitively avoid further generation of this fault message,

 - ignore this fault message.

 NOTE : The fault message is generated if the P25 sensor signal is invalid
____
 or out of range.

 (1) If the maintenance message P25 SNSR LINE, ECU or P25 SNSR LINE, ECU* is not confirmed:
 (a) No maintenance is required.
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 (2) If the maintenance message P25 SNSR LINE, ECU or P25 SNSR LINE, ECU* is not confirmed but is repetitive:
 - do a check for leak or blocked P25 sensor and sense line or loose fittings in the fan cowl area.
 (a) If nothing is found or if the fault continues:

 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).

 (b) If the fault continues:

 - do a visual inspection of the P25 probe (Ref. AMM TASK 73-21-80-210-002).
 B. Do the test given in Para. 3.A.
 (1) No additional maintenance action is required if the fault is not confirmed.

 (2) Repeat the fault isolation procedure if the fault continues.

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 TASK 73-20-00-810-954

 Loss of the P25 Sensor Signal on Engine 2
 1. Possible Causes
_______________
 - ECU (4000KS)

 - P25 sensor and sense line

 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 73-21-80-210-002 Visual Inspection of the P25 Sensor
 AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with

 Engine Non motoring)
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the FADEC 2B on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
 4. Fault Isolation
_______________
 A. The P25 signal is part of the PMUX option only used for Engine Condition Monitoring.
 NOTE : If the engine is not equipped in a PMUX configuration, you have
____
 two options:

 - replace the engine Identification Connector by a connector configured as Non PMUX to definitively avoid further generation of this fault message,

 - ignore this fault message.

 NOTE : The fault message is generated if the P25 sensor signal is invalid
____
 or out of range.

 (1) If the maintenance message P25 SNSR LINE, ECU or P25 SNSR LINE, ECU* is not confirmed:
 (a) No maintenance is required.
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 (2) If the maintenance message P25 SNSR LINE, ECU or P25 SNSR LINE, ECU* is not confirmed but is repetitive:
 - do a check for leak or blocked P25 sensor and sense line or loose fittings in the fan cowl area.
 (a) If nothing is found or if the fault continues:

 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
　
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