DOC AIRBUS | TSM A320FLoss of the P2/T2 Sensor on Engine 2
1. Possible Causes
· SENSOR-P2/T2 ( 4014KS )
· wiring from the EEC (4000KS) to the P2/T2 sensor (4014KS)
· RELAY BOX ( 4100KS )
· EEC ( 4000KS )
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power
Ref. AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External
Power
Ref. AMM 31-60-00-860-002 EIS Stop Procedure
Ref. AMM 70-23-15-912-010 Connection of Electrical Connectors
Ref. AMM 71-00-00-710-018 Discontinued Start, Restart and Shutdown Procedures
Ref. AMM 71-00-00-710-043 Normal Engine Automatic Start Procedure
Ref. AMM 71-00-00-710-047 Normal Engine Manual Start Procedure
Ref. AMM 71-13-00-410-010 Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
Ref. AMM 71-50-00-210-010 Wire Harness Visual Inspection - All Power Plant Electrical Cables
Ref. AMM 71-51-49-000-010 Removal of the Relay Box
Ref. AMM 71-51-49-400-010 Installation of the Relay Box
Ref. AMM 73-22-11-000-010 Removal of the P2/T2 Sensor
Ref. AMM 73-22-11-400-010 Installation of the P2/T2 Sensor
Ref. AMM 73-22-34-000-010 Removal of the Electronic Engine Control (EEC)
Ref. AMM 73-22-34-400-010 Installation of the Electronic Engine Control (EEC)
REFERENCE DESIGNATION
Ref. ASM 73-25-18
P2/T2 Sensor SHEET 1
Figure 73(IAE)-22-00-991-00500-B / SHEET 1/1 - P2/T2 Sensor not printed, as per printing
preferences
3. Fault Confirmation
Subtask 73-22-00-860-082-A
A. Job Set-up
(1) Energize the aircraft electrical circuits
Ref. AMM 24-41-00-861-002 .
(2) On the panel 50VU, release the ENG FADEC GND PWR 2 pushbutton switch.
Subtask 73-22-00-710-108-A
B. Test
(1) On the panel 50VU, push the ENG FADEC GND PWR 2 pushbutton switch and release it again.
NOTE: This action resets the FADEC memory.
(2) Adjust the brightness of the MCDU screen.
(3) Push the INIT mode key. The INIT page comes into view.
(4) Enter a new flight number.
(5) Start the engine 2 by the normal engine automatic start procedure Ref. AMM 71-00-00-710-043 or
the normal engine manual start procedure Ref. AMM 71-00-00-710-047 and let it become stable for 5
minutes.
NOTE: Operation of the engine for at least 3 minutes erases the LAST LEG REPORT related to the
last flight and the new fault is recorded in the EEC LAST LEG REPORT.
(6) Do a shutdown of the engine 2 by the discontinued start, restart and shutdown procedure Ref.
AMM 71-00-00-710-018 .
(7) Read the LAST LEG REPORT and the scheduled maintenance report (Class 3 Fault Messages) of
the FADEC (2A and 2B) menu on the MCDU (Ref. 70-00-00 Page Block 301 Task Supporting Data).
(a) Make a record of the maintenance message.
(b) Make a record of the channel FADEC 2A or FADEC 2B which found the fault.
(8) Fully decrease the brightness of the MCDU screen (display off).
4. Fault Isolation
(Ref. Fig. P2/T2 Sensor SHEET 1)
Subtask 73-22-00-810-081-A
A. If the test gives the maintenance message P2T2 SENS/HC/EEC2:
· Examine the harness Ref. AMM 71-50-00-210-010 from the EEC (4000KS) to the P2/T2 sensor
(4014KS) Ref. ASM 73-25-18.
· Disconnect the connectors 4014KS-A and 4014KS-B from the P2/T2 sensor (4014KS)
· Examine the connector and receptacle Ref. AMM 71-50-00-210-010
· Connect the connectors 4014KS-A and 4014KS-B to the P2/T2 sensor (4014KS) Ref.
AMM 70-23-15-912-010 .
(1) If the fault continues:
· Read the fault code shown on the FLIGHT DATA and GROUND DATA of the FADEC (2A and 2B)
menu on the MCDU (Ref. 70-00-00 Page Block 301 Task Supporting Data)
· Make a record of the fault code.
(a) If the FADEC 2A or 2B menu gives the fault code P2EPNI:
· Examine the P2 pneumatic line.
· Replace the SENSOR-P2/T2 ( 4014KS ) Ref. AMM 73-22-11-000-010 and Ref.
AMM 73-22-11-400-010 .
(b) If the FADEC 2A menu gives the fault code T2L or T2NAI:
· Do a check and repair the wiring from the EEC (4000KS) to the P2/T2 sensor (4014KS) pins
J4/G, b, c to pins B/1, 2, 3 Ref. ASM 73-25-18.
1 If the fault continues:
· Replace the SENSOR-P2/T2 ( 4014KS ) Ref. AMM 73-22-11-000-010 and Ref.
AMM 73-22-11-400-010 .
(c) If the FADEC 2B menu gives the fault code T2L or T2NAI:
· Do a check and repair the wiring from the EEC (4000KS) to the P2/T2 sensor (4014KS) pins
J10/G, b, c to pins A/9, 8, 7 Ref. ASM 73-25-18.
1 If the fault continues:
· Replace the SENSOR-P2/T2 ( 4014KS ) Ref. AMM 73-22-11-000-010 and Ref.
AMM 73-22-11-400-010 .
(d) If the FADEC 2A and FADEC 2B menus give the fault code T2XCF:
· Do a check and repair the wiring from the EEC (4000KS) to the P2/T2 sensor (4014KS)
. Pins J4/G, b, c to pins B/1, 2, 3
. Pins J10/G, b, c to pins A/9, 8, 7 Ref. ASM 73-25-18.
1 If the fault continues:
· Replace the SENSOR-P2/T2 ( 4014KS ) Ref. AMM 73-22-11-000-010 and Ref.
AMM 73-22-11-400-010 .
(2) If the fault continues:
· Replace the RELAY BOX ( 4100KS ) Ref. AMM 71-51-49-000-010 and Ref.
AMM 71-51-49-400-010 .
(3) If the fault continues:
· Replace the EEC ( 4000KS ) Ref. AMM 73-22-34-000-010 and Ref. AMM 73-22-34-400-010 .
Subtask 73-22-00-710-109-A
B. Do the test given in Para. 3.
5. Close-up
Subtask 73-22-00-860-083-A
A. Put the aircraft back to its initial configuration.
(1) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
Ref. AMM 31-60-00-860-002 .
(2) On the panel 50VU, push the ENG FADEC GND PWR 2 pushbutton switch.
(3) De-energize the aircraft electrical circuits
Ref. AMM 24-41-00-862-002 .
(4) Make sure that the fan cowls 447AL and 448AR are closed Ref. AMM 71-13-00-410-010 . [Rev.6 from Feb 2017] 2026.04.04 04:36:16 UTC