- replace the main oil/fuel heat exchanger (Ref. AMM TASK 79-21-20-000-002) and (Ref. AMM TASK 79-21-20-400-002).

 (b) If the check does not confirm the fault:
 - replace the XMTR-OIL QTY (4002EN) (Ref. AMM TASK 79-31-15-000-041) and (Ref. AMM TASK 79-31-15-400-041).
 1 If the fault continues:
_
 - do a check and repair the aircraft wiring from the oil quantity transmitter (4002EN) to the SDAC1 (1WV1), SDAC2 (1WV2) and EIU2 (1KS2).
 (c) If the oil quantity indication is replaced by amber XX on the lower ECAM display unit:
 - do a check for 28VDC at the oil quantity transmitter (4002EN).
 1 If there is no 28VDC:
_
 - do a check of the aircraft wiring between the circuit breaker (1EN2) and the oil quantity transmitter (4002EN) (Ref. ASM 79-36/01).
 2 If there is 28VDC:
_
 - do a check and repair the aircraft wiring from the oil quantity transmitter (4002EN) to the EIU2 (1KS2): pins AA/3, 4 to pins AA/8F, 8H (Ref. ASM 79-36/01).
 a If the fault continues:
_
 - replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
 C. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006).
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 TASK 79-00-00-810-812
 Oil Quantity Indication Replaced by Amber XX/Loss or fluctuation of the Oil
 Quantity Indication on Engine 1 or 2
 1. Possible Causes
_______________
 - XMTR-OIL QTY (4002EN) R - SDAC-1 (1WV1) R - SDAC-2 (1WV2)
 - wiring

 - EIU-1(2) (1KS1(2))

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
R  AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
R  AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2) 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 79-31-15-000-041 Removal of the oil Quantity Transmitter (4002EN) AMM 79-31-15-400-041 Installation of the Oil Quantity Transmiter (4002EN) ASM 79-36/01
 3. Fault Confirmation
__________________
 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.
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 4. Fault Isolation
_______________
 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU ENGINE/ENG2/OIL/QTY 1EN2 N41 121VU ENGINE/ENG1/OIL/QTY 1EN1 N39
 B. Replace the XMTR-OIL QTY (4002EN) (Ref. AMM TASK 79-31-15-000-041) and (Ref. AMM TASK 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 (Ref. ASM 79-36/01).

 (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 (Ref. ASM 79-36/01).

 (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 (Ref. ASM 79-36/01).
R - repair the wiring or replace the circuit breaker as required.
R (4) If the fault continues:
R - replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and
R (Ref. AMM TASK 31-55-34-400-001)

R (5) If the fault continues:
R - replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and
　
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