W DOC AIRBUS | TSM A320F

Failure of the Oil Temperature Sensors of the IDG 2 without Overtemperature Detection

TASK 24-00-00-810-822-A
Failure of the Oil Temperature Sensors of the IDG 2 without Overtemperature Detection

1. Possible Causes
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 12-13-24-612-041
IDG Servicing - Filling of the IDG with Oil or Addition of Oil after a level Check
AMM 12-13-24-612-803
IDG Servicing - Filling of the IDG with Oil or Addition of Oil after a Level Check
AMM 24-21-00-210-046
Check IDG Oil Level and Differential Pressure Indicator (DPI)
AMM 24-21-00-210-805
Check of the Oil Level and Oil-Filter Differential-Pressure Indicator (DPI)
AMM 24-21-00-920-040
Drain IDG Oil System, Discard Filter Element(s) and Replenish
AMM 24-21-00-920-802
Drain, Remove and Discard the Scavenge and Charge Filter Elements and Replenish IDG Oil System
ASM 242101
AMM 24-21-51-000-040
Removal of the Integrated Drive Generator - IDG 1(2)
AMM 24-21-51-000-803
Removal of the Integrated Drive Generator - IDG 1(2)
AMM 24-21-51-400-040
Installation of the Integrated Drive Generator - IDG 1(2)
AMM 24-21-51-400-803
Installation of the Integrated Drive Generator - IDG 1(2)
AMM 24-22-34-000-001
Removal of the GCU-1(2)
AMM 24-22-34-400-001
Installation of the GCU-1(2)
AMM 24-41-00-740-002
Operational Check of the GAPCU via the CFDS
3. Fault Confirmation
Subtask 24-00-00-740-068-A ** ON A/C NOT FOR ALL
A. Test
   (1) Read the Class 3 Faults of the GAPCU from the CFDS AMM 24-41-00-740-002.
4. Fault Isolation
CAUTION: BEFORE YOU START THE CHECK OF IDG WIRING THAT INCLUDES CONNECTORS, EXAMINE EACH CONNECTOR TO MAKE SURE THAT THERE IS NO CONTAMINATION IN IT. IF YOU FIND CONTAMINATION, CLEAN THE CONNECTOR AND CONNECT IT AGAIN. IF THE FAILURE CONTINUES, DO THE TROUBLE SHOOTING PROCEDURE AS GIVEN BELOW.
Subtask 24-00-00-810-073-B ** ON A/C NOT FOR ALL
A. If the Class 3 Faults gives the maintenance message IDG2 (E2-4000XU) OIL OUT TEMP/ GCU2 (1XU2):
NOTE: This CFDS message can come into view when the temperature of the IDG 2 oil is more than 151 deg.C but less than 185 deg.C.
If this CFDS message comes into view with other chapter-24 CFDS messages, do the trouble shooting for all these messages.
If there is no other message, do the trouble shooting that follows:
   (1) Do the trouble shooting for chapter-73 CFDS messages that come into view with the CFDS message IDG2 (E2-4000XU) OIL OUT TEMP/ GCU2 (1XU2).
   (2) If there is no chapter-73 CFDS message or if the fault continues after the trouble shooting:
     (a) If the DPI is extended:
     (b) If the DPI is not extended:
       1 If the oil level is not correct:
       2 If the oil level is correct:
  • Do a check of the resistance of the oil inlet and outlet temperature-sensors of the IDG 2 ASM 242101 between:
    . Pins B/7 and B/8 (100 ohms plus or minus 10 ohms at the ambient temperature of the IDG case)
    . Pins B/8 and B/9 (100 ohms plus or minus 10 ohms at the ambient temperature of the IDG case).
         a If the resistance values are out of the specified limits:
         b If the resistance values are in the specified limits:
  • Do a check of the wiring of the oil outlet temperature-sensor ASM 242101 for an open circuit or a short to ground between:
    . Pin B/7 of the IDG 2 and pin A/9C of the GCU 2
    . Pin B/8 of the IDG 2 and pin A/9D of the GCU 2
    . Pin B/9 of the IDG 2 and pin A/10C of the GCU 2.
    * If the wiring is not correct:
    - Repair or replace as necessary.
    * If the wiring is correct:
    - Replace GCU-2 [1XU2] AMM 24-22-34-000-001 and AMM 24-22-34-400-001.
    ** If the fault continues:
    - Replace IDG-ENG 2 [4000XU2] AMM 24-21-51-000-803 and AMM 24-21-51-400-803.
Subtask 24-00-00-810-073-E ** ON A/C NOT FOR ALL
A. If the Class 3 Faults gives the maintenance message IDG2 (E2-4000XU) OIL OUT TEMP/ GCU2 (1XU2):
NOTE: This CFDS message can come into view when the temperature of the IDG 2 oil is more than 151 deg.C but less than 185 deg.C.
If this CFDS message comes into view with other chapter-24 CFDS messages, do the trouble shooting for all these messages.
If there is no other message, do the trouble shooting that follows:
   (1) Do the trouble shooting for chapter-73 CFDS messages that come into view with the CFDS message IDG2 (E2-4000XU) OIL OUT TEMP/ GCU2 (1XU2).
   (2) If there is no chapter-73 CFDS message or if the fault continues after the trouble shooting:
     (a) If the DPI is extended:
     (b) If the DPI is not extended:
       1 If the oil level is not correct:
       2 If the oil level is correct:
  • do a check of the resistance of the oil inlet and outlet temperature-sensors of the IDG 2 ASM 242101 between:
    . pins B/7 and B/8 (100 ohms plus or minus 10 ohms at the ambient temperature of the IDG case)
    . pins B/8 and B/9 (100 ohms plus or minus 10 ohms at the ambient temperature of the IDG case).
         a If the resistance values are out of the specified limits:
         b If the resistance values are in the specified limits:
  • do a check of the wiring of the oil outlet temperature-sensor ASM 242101 for an open circuit or a short to ground between:
    . pin B/7 of the IDG 2 and pin A/9C of the GCU 2
    . pin B/8 of the IDG 2 and pin A/9D of the GCU 2
    . pin B/9 of the IDG 2 and pin A/10C of the GCU 2.
    * If the wiring is not correct:
    - repair or replace as necessary.
    * If the wiring is correct:
    - replace the GCU-2 [1XU2] AMM 24-22-34-000-001 and AMM 24-22-34-400-001.
    ** If the fault continues:
    - replace the engine 2 IDG [4000XU] AMM 24-21-51-000-040 and AMM 24-21-51-400-040.
Subtask 24-00-00-740-069-A ** ON A/C NOT FOR ALL
B. When you replace a component or repair the wiring:
  • do the subsequent flight before you do the check of the Class 3 Faults of the GAPCU from the CFDS.
    If the test continues to give the fault message, continue the trouble shooting procedure.
[Rev.8 from Aug 2018] 2026.04.04 04:26:09 UTC
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