W DOC AIRBUS | TSM A320F

Oil Quantity Indication Replaced by Amber XX/Loss or fluctuation of the Oil Quantity Indication on Engine 1 or 2

TASK 79-00-00-810-812-A
Oil Quantity Indication Replaced by Amber XX/Loss or fluctuation of the Oil Quantity Indication on Engine 1 or 2

1. Possible Causes
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 31-55-34-000-001
Removal of the SDAC
AMM 31-55-34-400-001
Installation of the SDAC
AMM 73-25-34-000-040
Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-040
Installation of the Engine Interface Unit (EIU)
AMM 79-31-15-000-040
Removal of the Oil Quantity Transmitter
AMM 79-31-15-000-041
Removal of the Oil Quantity Transmitter
AMM 79-31-15-400-040
Installation of the Oil Quantity Transmitter
AMM 79-31-15-400-041
Installation of the Oil Quantity Transmitter
ASM 793601
3. Fault Confirmation
Subtask 79-00-00-710-072-A ** ON A/C NOT FOR ALL
A. Test
   (1) Not applicable.
NOTE: It is normal that the oil quantity indication displayed on the ECAM can be subjected to variations/fluctuations. This phenomenon linked to gulping of oil in the tank is sensible during engine start, after engine power significant variations (ie TOGA), in that case it is inappropriate to perform trouble shooting for oil quantity indication failure. In the opposite, if the variations/fluctuations are experienced on ground when engine is not running or for engine stabilized operation, trouble shooting has to be performed.
4. Fault Isolation
Subtask 79-00-00-865-052-A ** ON A/C NOT FOR ALL
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/OIL/QTY1EN2N41
121VUENGINE/ENG1/OIL/QTY1EN1N39
Subtask 79-00-00-810-064-A ** ON A/C NOT FOR ALL
B. Replace the XMTR-OIL QTY [4002EN] AMM 79-31-15-000-040 and AMM 79-31-15-400-040.
   (1) If the fault continues:
  • do a check and repair the electrical wiring between the oil quantity transmitter (4002EN), the EIU1(2) (1KS1(2)), the SDAC1 and the SDAC2 ASM 793601.
   (2) If nothing is found:
  • do a check of the electrical grounding of the oil quantity transmitter (4002EN) at the ground terminal on engine fan case ASM 793601.
   (3) If nothing is found:
  • do a check of the electrical wiring between the oil quantity transmitter (4002EN) and the circuit breaker 1EN1 or 1EN2 ASM 793601.
  • repair the wiring or replace the circuit breaker as required.
   (4) If the fault continues:
   (5) If the fault continues:
   (6) If the fault continues:
Subtask 79-00-00-810-064-B ** ON A/C NOT FOR ALL
B. Replace the XMTR-OIL QTY [4002EN] AMM 79-31-15-000-041 and AMM 79-31-15-400-041.
   (1) If the fault continues:
  • do a check and repair the electrical wiring between the oil quantity transmitter (4002EN), the EIU1(2) (1KS1(2)), the SDAC1 and the SDAC2 ASM 793601.
   (2) If nothing is found:
  • do a check of the electrical grounding of the oil quantity transmitter (4002EN) at the ground terminal on engine fan case ASM 793601.
   (3) If nothing is found:
  • do a check of the electrical wiring between the oil quantity transmitter (4002EN) and the circuit breaker 1EN1 or 1EN2 ASM 793601.
  • repair the wiring or replace the circuit breaker as required.
   (4) If the fault continues:
   (5) If the fault continues:
   (6) If the fault continues:
Subtask 79-00-00-710-073-A ** ON A/C NOT FOR ALL
C. No additional maintenance action is required if the fault is not confirmed.
   (1) Repeat the fault isolation procedure if the fault continues.
[Rev.8 from Aug 2018] 2026.04.04 04:38:21 UTC
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