DOC AIRBUS | TSM A320FFuel ENG 2 FIRE PUSH Pushbutton Switch Does Not Close The Engine 2 LP Fuel Valve
TASK 28-24-00-810-807-A
Fuel ENG 2 FIRE PUSH Pushbutton Switch Does Not Close The Engine 2 LP Fuel Valve
A. Referenced Information
3. Fault Confirmation
Subtask 28-24-00-710-055-A
Subtask 28-24-00-810-056-A
[Rev.8 from Aug 2018]
2026.04.04 04:28:41 UTC
Fuel ENG 2 FIRE PUSH Pushbutton Switch Does Not Close The Engine 2 LP Fuel Valve
WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
WARNING:
WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT: EN50020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
1. Possible Causes- ENG/APU FIRE PNL [1WD]
- aircraft wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 28-24-00-810-805-A | Fuel LP Fuel Valve Engine 2 Does Not Open |
| TSM TASK 28-24-00-810-806-A | Fuel LP Fuel Valve Engine 2 Does Not Close |
| ESPM 2053210 | |
| AMM 26-12-00-00- | |
| AMM 26-12-12-000-001 | Removal of the ENG/APU Fire Panel |
| AMM 26-12-12-400-001 | Installation of the ENG/APU Fire Panel |
| AMM 26-21-00-00- | |
| AMM 26-21-00-710-004 | Operational Test of Fire Control Pushbutton Switch Sub-functions Related to Engine Shut-Down and Isolation (With External Air-supply Unit) |
| ASM 262102 | |
| AMM 28-24-00-00- | |
| AMM 28-24-00-710-002 | Operational Test of the ENG 1(2) LP Fuel Valve |
| ASM 282401 | |
| AMM 76-12-00-00- | |
| ASM 761201 | |
| TSM TASK 28-24-00-03 | ENGINE LP FUEL SHUT OFF - TASK SUPPORTING DATA |
Subtask 28-24-00-710-055-A
A. Test
(1) Do the Operational Test of the ENG 1(2) LP Fuel Valve 12QM (13QM) AMM 28-24-00-710-002.
(a) If the ENG 2 Fuel Valve 13QM:
(a) If when the ENG 2 FIRE P/BSW is first pushed (to give the LP valve close command) the ACTUATOR-LP FUEL VALVE, ENG 2 (10QG):
4. Fault Isolation(1) Do the Operational Test of the ENG 1(2) LP Fuel Valve 12QM (13QM) AMM 28-24-00-710-002.
(a) If the ENG 2 Fuel Valve 13QM:
- operates as specified, do step (2)
- does not open, do the TSM procedure (Ref. TSM TASK 28-24-00-810-805)
- does not close, do the TSM procedure (Ref. TSM TASK 28-24-00-810-806).
(a) If when the ENG 2 FIRE P/BSW is first pushed (to give the LP valve close command) the ACTUATOR-LP FUEL VALVE, ENG 2 (10QG):
- operates as specified, no troubleshooting work steps are necessary
- does not close, do Para. 4.A.
NOTE: You can get more data from the:
- Aircraft Maintenance Manual (AMM) AMM 26-12-00-00- AMM 26-21-00-00- AMM 28-24-00-00- and AMM 76-12-00-00-
- Trouble Shooting Manual (TSM) Task Supporting Data
28-24-00-03 TSM TASK 28-24-00-03 - Aircraft Schematic Manual (ASM) ASM 262102 ASM 282401 and ASM 761201.
Subtask 28-24-00-810-056-A
A. Procedure
(1) Do a check of ASM 282401 and replace, if necessary, the ENG/APU FIRE PNL [1WD] AMM 26-12-12-000-001 and AMM 26-12-12-400-001.
(2) If the fault continues, do a check of the aircraft wiring ASM 282401 between:
(4) Do the test given in Para. 3.A.
(1) Do a check of ASM 282401 and replace, if necessary, the ENG/APU FIRE PNL [1WD] AMM 26-12-12-000-001 and AMM 26-12-12-400-001.
(2) If the fault continues, do a check of the aircraft wiring ASM 282401 between:
- the connector 1WD-D, pin <J and the ACTUATOR-LP FUEL VALVE, ENG 2 connector 10QG-A, pin C (MOT 1, 10QG close supply)
- the connector 1WD-C, pin <C and the ACTUATOR-LP FUEL VALVE, ENG 2 connector 10QG-B, pin C (MOT 2, 10QG close supply).
(4) Do the test given in Para. 3.A.