DOC AIRBUS | TSM A320FFailure of the IGGS Temperature Sensor 2YA
TASK 47-11-00-810-804-A
Failure of the IGGS Temperature Sensor 2YA
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 47-11-00-740-056-B ** ON A/C NOT FOR ALL
Subtask 47-11-00-810-053-B ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:34:22 UTC
Failure of the IGGS Temperature Sensor 2YA
1. Possible Causes
- SENSOR-BLEED AIR TEMP, IGGS [2YA]
wiring from IGGS CTL UNIT (1YA) pin A/68 to IGGS TEMP SNSR (2YA) pin A/1 wiring from IGGS CTL UNIT (1YA) pin A/79 to IGGS TEMP SNSR (2YA) pin A/2 wiring from IGGS CTL UNIT (1YA) pin A/67 to IGGS TEMP SNSR (2YA) pin A/3 wiring from IGGS CTL UNIT (1YA) pin A/44 to IGGS TEMP SNSR (2YA) pin A/4 wiring from IGGS CTL UNIT (1YA) pin A/32 to IGGS TEMP SNSR (2YA) pin A/5 wiring from IGGS CTL UNIT (1YA) pin A/43 to IGGS TEMP SNSR (2YA) pin A/6
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 471101 | |
| AMM 47-31-34-740-001 | BITE Test of the IGGS with Bleed Air |
| AMM 47-41-11-000-001 | Removal of the Temperature Sensor |
| AMM 47-41-11-400-001 | Installation of the Temperature Sensor |
Subtask 47-11-00-740-056-B ** ON A/C NOT FOR ALL
A. Do the subsequent steps to confirm the fault:
(1) On the cockpit rear panel 121VU open, wait for 5 seconds and close the circuit breaker 7YA.
(2) Do the BITE test of the IGGS without bleed air AMM 47-31-34-740-001.
4. Fault Isolation(1) On the cockpit rear panel 121VU open, wait for 5 seconds and close the circuit breaker 7YA.
(2) Do the BITE test of the IGGS without bleed air AMM 47-31-34-740-001.
Subtask 47-11-00-810-053-B ** ON A/C NOT FOR ALL
A. Procedure
(a) Do a check and repair the:
Subtask 47-11-00-740-057-B ** ON A/C NOT FOR ALL - Replace the SENSOR-BLEED AIR TEMP, IGGS [2YA] AMM 47-41-11-000-001 and AMM 47-41-11-400-001.
- On the cockpit rear panel 121VU open, wait for 5 seconds and close the circuit breaker 7YA.
- Do the BITE test of the IGGS with bleed air AMM 47-31-34-740-001.
(a) Do a check and repair the:
wiring from IGGS CTL UNIT (1YA) pin A/68 to IGGS TEMP SNSR (2YA) pin A/1 wiring from IGGS CTL UNIT (1YA) pin A/79 to IGGS TEMP SNSR (2YA) pin A/2 wiring from IGGS CTL UNIT (1YA) pin A/67 to IGGS TEMP SNSR (2YA) pin A/3 wiring from IGGS CTL UNIT (1YA) pin A/44 to IGGS TEMP SNSR (2YA) pin A/4 wiring from IGGS CTL UNIT (1YA) pin A/32 to IGGS TEMP SNSR (2YA) pin A/5 wiring from IGGS CTL UNIT (1YA) pin A/43 to IGGS TEMP SNSR (2YA) pin A/6 ASM 471101.
B. Do the BITE test of the IGGS with bleed air AMM 47-31-34-740-001.
NOTE: After the subsequent flight make sure that the fault does not continue.