W DOC AIRBUS | TSM A320F

APU AUTO SHUTDOWN - NO ACCELERATION, Oil Temperature Sensor out-of-range (high) (131-9(A))

TASK 49-00-81-810-842-A
APU AUTO SHUTDOWN - NO ACCELERATION, Oil Temperature Sensor out-of-range (high) (131-9(A))

1. Possible Causes
  • OIL TEMP SENSOR SHOWS OUT OF RANGE HIGH
  • damage/contamination of the electrical connector P11
  • OIL TEMP SENSOR (P11)
  • aircraft wiring
  • ELECTRONIC CONTROL BOX [59KD]
  • Oil Sump Temp Sensor (8084KM)
  • OIL TEMP SENSOR (8092KM)
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
MULTIMETER - STANDARD
 B. Referenced Information
REFERENCE
DESIGNATION
AMM 49-00-00-860-008
APU Start by External Power
ASM 496104
AMM 49-61-34-000-003
Removal of the Electronic Control Box (ECB) (131-9(A))
AMM 49-61-34-400-003
Installation of the Electronic Control Box (ECB) (131-9(A))
AMM 49-94-15-000-001
Removal of Oil Temperature Sensor (131-9(A))
AMM 49-94-15-400-001
Installation of Oil Temperature Sensor (131-9(A))
3. Fault Confirmation
Subtask 49-00-81-710-172-A ** ON A/C NOT FOR ALL
A. Read-out of ECB Trouble-Shooting Data
   (1) Put the APU MASTER SW to the ON position.
   (2) Get access to the APU SHUTDOWN report.
   (3) Push the '>' adjacent to LRU DATA:
  • the MCDU menu shows
    OIL TEMP SENSOR SHOWS OUT OF RANGE HIGH

   (4) Start the APU and apply Bleed Air for 20 seconds, minimum AMM 49-00-00-860-008.
4. Fault Isolation
Subtask 49-00-81-810-119-A ** ON A/C NOT FOR ALL
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:

NO ACCELERATION
OIL TEMP SENSOR P11

associated with the Fault Code Number (FCN) 55

  • do a check for damage/contamination of the electrical connector P11 of the OIL TEMP SENSOR (P11)
   (1) If the electrical connector P11 is damaged/contaminated:
  • do a repair/cleaning.
   (2) If the electrical connector P11 is OK:
  • use a MULTIMETER - STANDARD to do a resistance check across pin A and pin B of the OIL TEMP SENSOR (P11).
     (a) If the resistance value is > 200 Ohms:
     (b) If the resistance value is in the specified limit:
  • do a check and repair of the aircraft wiring from the ECB (59KD) AB/J5,B8 to the OIL TEMP SENSOR (P11) P11/A,B ASM 496104.
       1 If the fault continues:
Subtask 49-00-81-810-119-B ** ON A/C NOT FOR ALL
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:

NOTE: With introduction of the ECB Software V2 the wording of the fault message Oil Sump Temp Sensor (8084KM) is not correct. The functional item number of the Oil Temperature Sensor is (8092KM).

NO ACCELERATION
OIL SUMP TEMP SENSOR (8084KM)

associated with the Fault Code Number (FCN) 55

  • do a check for damage/contamination of the electrical connector P11 of the OIL TEMP SENSOR (8092KM)
   (1) If the electrical connector P11 is damaged/contaminated:
  • do a repair/cleaning.
   (2) If the electrical connector P11 is OK:
  • use a MULTIMETER - STANDARD to do a resistance check across pin A and pin B of the OIL TEMP SENSOR (8092KM)
     (a) If the resistance value is > 200 Ohms:
     (b) If the resistance value is in the specified limit:
  • do a check and repair of the aircraft wiring from the ECB (59KD) AB/J5,B8 to the OIL SUMP TEMP SENSOR (8084KM) P11/A,B ASM 496104.
       1 If the fault continues:
Subtask 49-00-81-810-179-A ** ON A/C NOT FOR ALL
B. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:

NO ACCELERATION
OIL TEMP SENSOR (8092KM)

associated with the Fault Code Number (FCN) 54 or 55

  • do a check for damage/contamination of the electrical connector P11 of the OIL TEMP SENSOR (8092KM)
   (1) If the electrical connector P11 is damaged/contaminated:
  • do a repair/cleaning.
   (2) If the electrical connector is OK:
  • use a MULTIMETER - STANDARD to do a resistance check across pin A and pin B of the OIL TEMP SENSOR (8092KM).
     (a) If the resistance value is not between 60 Ohms and 200 Ohms:
     (b) If the resistance value is between 60 Ohms and 200 Ohms:
  • do a check and repair of the aircraft wiring from the ECB (59KD) AB/J5,B8 to the OIL TEMP SENSOR (8092KM) P11/A,B ASM 496104.
       1 If the fault continues:
Subtask 49-00-81-710-173-A ** ON A/C NOT FOR ALL
C. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:34:35 UTC
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