DOC AIRBUS | TSM A320FLoss of the Identification of the Left or Right Side by the WHC 1
TASK 30-42-00-810-839-A
Loss of the Identification of the Left or Right Side by the WHC 1
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 30-42-00-710-112-A
Subtask 30-42-00-810-085-A
[Rev.8 from Aug 2018]
2026.04.04 04:29:44 UTC
Loss of the Identification of the Left or Right Side by the WHC 1
1. Possible Causes
- WHC-1 [2DG1]
- wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 30-42-34-000-001 | Removal of the Window Heat Computer (WHC) |
| AMM 30-42-34-400-001 | Installation of the Window Heat Computer (WHC) |
Subtask 30-42-00-710-112-A
A. Test
Not Applicable
4. Fault IsolationNot Applicable
Subtask 30-42-00-810-085-A
A. If the fault is identified by the maintenance message:
X WINDSHIELD SENSOR
(1) Remove the WHC-1 [2DG1] AMM 30-42-34-000-001.
(2) Do a check for 28VDC at pins C and S of the connector 2DG1-B on the wiring side at the same time.
(a) If there is 28VDC at pins C and S at the same time:
X WINDSHIELD SENSOR
(1) Remove the WHC-1 [2DG1] AMM 30-42-34-000-001.
(2) Do a check for 28VDC at pins C and S of the connector 2DG1-B on the wiring side at the same time.
(a) If there is 28VDC at pins C and S at the same time:
- there is an unwanted 28VDC at pin S
- repair the wiring .
- replace the WHC-1 [2DG1] AMM 30-42-34-000-001 and AMM 30-42-34-400-001