DOC AIRBUS | TSM A320FENG 2 Fire Panel/Switch Illumination without Associated ECAM Warning
TASK 26-12-00-810-849-A
ENG 2 Fire Panel/Switch Illumination without Associated ECAM Warning
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 26-12-00-710-148-A
Subtask 26-12-00-810-103-A
[Rev.8 from Aug 2018]
2026.04.04 04:27:12 UTC
ENG 2 Fire Panel/Switch Illumination without Associated ECAM Warning
1. Possible Causes
- trace of water ingress or corrosion
- BOARD-ANN LT TEST & INTFC [5LP]
- wiring
- BOARD-ANN LT TEST & INTFC [18LP]
- FWC-2 [1WW2]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 26-12-00-710-001 | Operational Check of Loop/Squib |
| ASM 261201 | |
| AMM 31-53-34-000-001 | Removal of the Flight Warning Computer (FWC) |
| AMM 31-53-34-400-001 | Installation of the Flight Warning Computer (FWC) |
| AMM 33-14-33-000-001 | Removal of the Annunciator-Light Test and Interface-Board |
| AMM 33-14-33-400-001 | Installation of the Annunciator-Light Test and Interface-Board |
Subtask 26-12-00-710-148-A
A. Test
(1) Do the operational test of the engine fire and overheat detection (loop/squib) to make sure that the ECAM warning is deployed on ECAM AMM 26-12-00-710-001.
4. Fault Isolation(1) Do the operational test of the engine fire and overheat detection (loop/squib) to make sure that the ECAM warning is deployed on ECAM AMM 26-12-00-710-001.
Subtask 26-12-00-810-103-A
A. If the legend of the ENG2 FIRE pushbutton switch is on and the FIRE legend of the ENG/2 FIRE/FAULT annunciator is on:
Subtask 26-12-00-810-104-A - remove the annunciator light test and interface board (5LP) AMM 33-14-33-000-001,
- do a visual inspection for any trace of water ingress or corrosion .
- repair or replace as necessary the BOARD-ANN LT TEST & INTFC [5LP] AMM 33-14-33-400-001.
- do a check and repair the wiring ASM 261201 between:
. the annunciator light test and interface board (5LP) pin A/18 and the ENG/APU FIRE panel (1WD) pin D/B
. the annunciator light test and interface board (5LP) pin A/10 and the ANN ENG/2 FIRE/FAULT (5KS2) pin A/7.
B. If the legend of the ENG2 FIRE pushbutton switch is on :
Subtask 26-12-00-710-149-A - Remove the annunciator light test and interface board (18LP) AMM 33-14-33-000-001,
- Do a visual inspection for any trace of water ingress or corrosion .
- Repair or replace as necessary the BOARD-ANN LT TEST & INTFC [18LP] AMM 33-14-33-400-001.
- Do a check and repair the wiring ASM 261201 between the annunciator light test and FIRE panel (1WD) pin C/B.
- Replace the FWC-2 [1WW2] AMM 31-53-34-000-001, AMM 31-53-34-400-001.
C. Do the test given in Para. 3.