W DOC AIRBUS | TSM A320F

Loss of the ENG 2 OIL LOW PRESS Signal from the Relay to the TPIS

TASK 32-49-00-810-821-A
Loss of the ENG 2 OIL LOW PRESS Signal from the Relay to the TPIS

1. Possible Causes
  • RELAY-ENG2 OIL LOW PRESS [3EN2]
  • [2GV]
  • wiring
  • CTL SW-ENG/MASTER 2 [2KC]
  • RELAY-ENG2 OIL PRESS [11KC2]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 32-49-00-710-001
Operational Test of the Tire Pressure Indicating System (TPIS)
ASM 324901
AMM 32-49-34-000-001
Removal of the TPIS Detection Unit
AMM 32-49-34-400-001
Installation of the TPIS Detection Unit
ASM 761201
ASM 793601
3. Fault Confirmation
Subtask 32-49-00-865-054-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/OIL/PRESS2EN2N42
** ON A/C NOT FOR ALL
121VUOIL/PRESS/ENG210KC2N42
Subtask 32-49-00-710-091-A ** ON A/C NOT FOR ALL
B. Test
   (1) Do the operational test of the TPIS AMM 32-49-00-710-001.
4. Fault Isolation
Subtask 32-49-00-810-070-A ** ON A/C NOT FOR ALL
A. If the operational test gives the maintenance message CHECK OIL PRESS SWITCH 3EN2:
  • Replace the RELAY-ENG2 OIL LOW PRESS [3EN2] .
   (1) If the fault continues:
   (2) If the fault continues:
  • Do a check of the wiring from the TPIS (2GV) pin AB/12A to the relay (3EN2) pin A/6 ASM 324901.
     (a) If there is no continuity:
  • Repair the related wiring.
     (b) If there is continuity:
  • Replace the CTL SW-ENG/MASTER 2 [2KC] .
       1 If the fault continues:
- Do a check and repair the:
. wiring from the circuit breaker (2EN2) to the relay (3EN2) pin A/X
. wiring from the relay (3EN2) pin A/Z to the control switch (2KC) pin 3A ASM 793601.
Subtask 32-49-00-810-070-D ** ON A/C NOT FOR ALL
A. If the operational test gives the maintenance message CHECK OIL PRESS SWITCH 3EN2:
NOTE: The FIN of the relay given in this fault message is not correct. In the NEO configuration, relay 11KC2 replaces relay 3EN2.
  • Replace the RELAY-ENG2 OIL PRESS [11KC2] .
   (1) If the fault continues:
   (2) If the fault continues:
  • Do a check of the wiring ASM 324901 between:
    . the TPIS (2GV) pin AB/12A and the relay (11KC2) pin A/6
    . the relay (11KC2) pin A/C and the ground.
     (a) If there is no continuity:
  • Repair the related wiring.
     (b) If there is continuity:
  • Replace the CTL SW-ENG/MASTER 2 [2KC] .
       1 If the fault continues:
  • Do a check and repair the wiring ASM 761201 between:
    . the circuit breaker (10KC2) and the relay (11KC2) pin A/X
    . the relay (11KC2) pin A/Z and the control switch (2KC) pin 3A
    . the control switch (2KC) pin 1A and the ground.
Subtask 32-49-00-710-092-A ** ON A/C NOT FOR ALL
B. Do the test given in Para. 3.B.
[Rev.8 from Aug 2018] 2026.04.04 04:31:47 UTC
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