DOC AIRBUS | TSM A320FLoss of the Command Inputs (ENG 1/ENG 2)
TASK 30-42-00-810-824-A
Loss of the Command Inputs (ENG 1/ENG 2)
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 30-42-00-710-096-A
Subtask 30-42-00-810-073-A
[Rev.8 from Aug 2018]
2026.04.04 04:29:43 UTC
Loss of the Command Inputs (ENG 1/ENG 2)
1. Possible Causes
- WHC-2 [2DG2]
- RELAY-OIL LOW PRESS AND GROUND, ENG 1 [10KS1]
- RELAY-OIL LOW PRESS AND GROUND, ENG 2 [10KS2]
- wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 30-42-00-710-001 | Operational Test of the Windshield Anti-Icing and Defogging |
| ASM 304202 | |
| 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 30-42-00-710-096-A
A. Test
(1) Do the operational test of the windshield anti-icing and defogging AMM 30-42-00-710-001.
4. Fault Isolation(1) Do the operational test of the windshield anti-icing and defogging AMM 30-42-00-710-001.
Subtask 30-42-00-810-073-A
A. If the test gives the maintenance message CHECK EIU WHC 2 INTERFACE:
1 Do a check and repair the wiring :
Subtask 30-42-00-710-097-A - do a check for ground at pin B/Y and/or pin B/Z of the WHC 2 (2DG2).
- replace the WHC-2 [2DG2] , AMM 30-42-34-000-001 and AMM 30-42-34-400-001.
- replace the RELAY-OIL LOW PRESS AND GROUND, ENG 1 [10KS1] .
- replace the RELAY-OIL LOW PRESS AND GROUND, ENG 2 [10KS2] .
1 Do a check and repair the wiring :
- from the WHC 2 (2DG2) pin B/Y to the relay (10KS1) pin A/2
- from the relay (10KS1) pin A/A to the ground
- from the WHC 2 (2DG2) pin B/Z to the relay (10KS2) pin A/2 and
- from the relay (10KS2) pin A/A to the ground.
B. Do the operational test given in Para. 3.