W DOC AIRBUS | TSM A320F

Loss of the Temperature Sensor of the Left Fixed Window

TASK 30-42-00-810-810-A
Loss of the Temperature Sensor of the Left Fixed Window

1. Possible Causes
  • WINDOW-FIXED, L [7DG1]
  • WHC-1 [2DG1]
  • wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1)
  • wiring from the WHC1 (2DG1) to the left fixed window (7DG1)
  • wiring from the WHC1 (2DG1) to the left fixed window (7DG1)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 30-42-00-710-001
Operational Test of the Windshield Anti-Icing and Defogging
ASM 304201
AWM 304203
AMM 30-42-34-000-001
Removal of the Window Heat Computer (WHC)
AMM 30-42-34-400-001
Installation of the Window Heat Computer (WHC)
AMM 56-11-12-000-001
Removal of the Fixed Windows
AMM 56-11-12-400-002
Installation of the Fixed Windows
AMM 56-12-12-000-001
Removal of the Actuating Mechanism
AMM 56-12-12-400-002
Installation of the Actuating Mechanism
F L Fixed Window Electrical Connector with 2 sensors
F L Fixed Window Electrical Connector with 3 sensors
F Sensor Resistance Versus Temperature
3. Fault Confirmation
Subtask 30-42-00-710-068-A
A. Test
   (1) Do the operational test of the windshield anti-icing and defogging AMM 30-42-00-710-001.
NOTE: In some conditions, there can be a difference between the pin allocation of the reference ASM and AWM and the content of the TSM task.
4. Fault Isolation
Subtask 30-42-00-865-057-A
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
122VUANTI ICE/WHC/15DG1X13
Subtask 30-42-00-810-088-B ** ON A/C NOT FOR ALL
B. If the test gives the maintenance message L FIXED WINDOW SENSOR associated with ECAM message ANTI-ICE L WINDSHIELD, or ANTI-ICE L WINDOW:
   (1) If the WHC1 PN 6664287 is installed and if the ECAM warning is triggered on ground with OAT greater than 40 deg.C or if the cockpit window/windshield is directly heading to the sun and air conditioning packs off:
  • operate the air conditioning packs
  • after 5 minutes, open and close circuit breaker 5DG1 to do a reset of the WHC1.
     (a) If the fault continues:
  • For fixed window P/N NH25216-series, go to para 4.C.
  • For fixed window P/N NP165313-series and SPSA320 series 1, go to para 4.D.
  • For fixed window P/N SPSA320 series 2, go to para 4.E.
   (2) If the WHC1 PN 6664287 is not installed:
  • For fixed window P/N NH25216-series, go to para 4.C.
  • For fixed window P/N NP165313-series and SPSA320 series 1, go to para 4.D.
  • For fixed window P/N SPSA320 series 2, go to para 4.E.
Subtask 30-42-00-810-059-A ** ON A/C NOT FOR ALL
C. For fixed window P/N NH25216-series, if the test gives maintenance message L FIXED WINDOW SENSOR:
  • Disconnect the electrical connector from the L FIXED WINDOW (7DG1) and do a check of the resistance between pins A/C and A/D on the receptacle of the L FIXED WINDOW (7DG1).
    F Sensor Resistance Versus Temperature
   (1) If the resistance is more than 715 ohms (open circuit) (OAT more than 40 deg.C (104.00 deg.F) ) or is less than 370 Ohms (short circuit):
     (a) If the resistance of replacement sensor is between 370 Ohms and 715 Ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/E and A/F of replacement sensor AWM 304203 and ASM 304201.
     (b) If the resistance of replacement sensor is more than 715 Ohms or less than 370 Ohms:
     (c) If the fault continues:
     (d) If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V to pins A/D and A/C and pins B/U and B/V to pins A/E and A/F.
   (2) If the resistance is between 370 ohms and 715 ohms:
For example, for OAT= 20 deg.C (68.00 deg.F) sensor value must be between 594 Ohms and 606 Ohms.
     (a) If the resistance is out of tolerance:
       1 Do a check of the resistance of sensor 3 between pins A/D and A/E for correct value.
       2 If the resistance of sensor 3 is between 370 Ohms and 715 Ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/D and A/E of sensor 3 AWM 304203 and ASM 304201.
       3 If the resistance of sensor 3 is more than 715 Ohms or less than 370 Ohms:
     (b) If the resistance is within the tolerance:
       1 Replace WHC-1 [2DG1] , AMM 30-42-34-000-001 and AMM 30-42-34-400-001.
       2 If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V topins A/D and A/C and pins B/U and B/V to pins A/D and A/E and pins B/U and B/V to pins A/E and A/F.
  • Replace WINDOW-FIXED, L [7DG1] , AMM 56-11-12-000-001 and AMM 56-11-12-400-002.
Subtask 30-42-00-810-098-A ** ON A/C NOT FOR ALL
D. For fixed window P/N NP165313-series and SPSA320 series 1, if the test gives the maintenance message L SLIDING WINDOW SENSOR:
   (1) If the resistance is more than 715 ohms (open circuit) or less than 370 ohms (short circuit):
     (a) If the resistance of the sensor 2 is between 370 ohms and 715 ohms:
  • Connect pins B/U and B/V of the WHC1 (2DG1) to pins A/E and A/F of the left fixed window (7DG1).
     (b) If the resistance of the sensor 2 is more than 715 ohms or less than 370 ohms:
       1 If the fault continues:
  • Do a check and repair the wiring from the WHC1 (2DG1) to the left fixed window (7DG1), pins B/U and B/V to pins A/D and A/C ASM 304201.
   (2) If the resistance is between 370 ohms and 715 ohms:
     (a) Replace WHC-1 [2DG1] , AMM 30-42-34-000-001 and AMM 30-42-34-400-001.
     (b) If the fault continues:
  • Do a check and repair the wiring from the WHC1 (2DG1) to the left fixed window (7DG1), pins B/U and B/V to pins A/D and A/c ASM 304201.
Subtask 30-42-00-810-099-A ** ON A/C NOT FOR ALL
E. For fixed window P/N SPSA320 series 2, if the test gives maintenance message L FIXED WINDOW SENSOR:
  • Disconnect the electrical connector from the L FIXED WINDOW (7DG1) and do a check of the resistance between pins A/C and A/D on the receptacle of the L FIXED WINDOW (7DG1).
    F Sensor Resistance Versus Temperature
   (1) If the resistance is more than 715 ohms (open circuit) (OAT more than 40 deg.C (104.00 deg.F) ) or is less than 370 ohms (short circuit):
     (a) If the resistance of sensor 3 is between 370 ohms and 715 ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/D and A/E of sensor 3 AWM 304203 and ASM 304201.
     (b) If the resistance of sensor 3 is more than 715 ohms or less than 370 ohms:
       1 If the resistance of sensor 2 is between 370 ohms and 715 ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/E and A/F of sensor 2 AWM 304203 and ASM 304201.
       2 If the resistance is more than 715 ohms and less than 370 ohms:
       3 If the fault continues:
       4 If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V to pins A/D and A/C and pins B/U and B/V to pins A/D and A/E and pins B/U to B/V to pins A/E and A/F.
   (2) If the resistance is between 370 ohms and 715 ohms:
  • Verify the correct value of the resistance of temperature sensor connected to the WHC-1 (7DG1) ASM 304201.
    F Sensor Resistance Versus Temperature
    For example, for OAT= 20 deg.C (68.00 deg.F) the sensor value must be between 594 Ohms and 606 Ohms.
     (a) If the resistance is out of tolerance:
       1 Do a check of the resistance of sensor 3 between pins A/D and A/E for correct value.
       2 If the resistance of sensor 3 is between 370 Ohms and 715 Ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/D and A/E of sensor 3 AWM 304203 and ASM 304201.
       3 If the resistance of sensor 3 is more than 715 Ohms or less than 370 Ohms:
F Sensor Resistance Versus Temperature
         a Make sure that the connector pins are not damaged.
         b Do a check of the resistance of sensor 2 between pins A/E and A/F for correct value.
         c If the resistance of sensor 2 is correct:
  • Connect pins A/A and A/B of the WHC-1 (2DG1) to pins A/E and A/F of sensor ASM 304201.
         d If the resistance of sensor 2 is not correct:
     (b) If the resistance is within the tolerance:
       1 Replace WHC-1 [2DG1] , AMM 30-42-34-000-001 and AMM 30-42-34-400-001.
       2 If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V to pins A/D and A/C and pins B/U and B/V to pins A/D and A/E and pins B/U and B/V to pins A/E and A/F.
       3 If the fault continues:
Subtask 30-42-00-810-059-B ** ON A/C NOT FOR ALL
F. If the test gives maintenance message L FIXED WINDOW SENSOR associated with ECAM message ANTI-ICE L WINDSHIELD, or ANTI-ICE L WINDOW:
  • Disconnect the electrical connector from the L FIXED WINDOW (7DG1) and do a check of the resistance between pins A/C and A/D on the receptacle of the L FIXED WINDOW (7DG1).
   (1) If the resistance is more than 715 ohms (open circuit) or is less than 370 ohms (short circuit):
     (a) If the resistance of replacement sensor is between 370 ohms and 715 ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/E and A/F of replacement sensor AWM 304203 and ASM 304201.
     (b) If the resistance of replacement sensor is more than 715 ohms or less than 370 ohms:
     (c) If the fault continues:
     (d) If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V to pins A/D and A/C and pins B/U and B/V to pins A/E and A/F.
   (2) If the resistance is between 370 ohms and 715 ohms:
  • Verify the correct value of the resistance of temperature sensor connected to the L FIXED WINDOW (7DG1) ASM 304201.
    F Sensor Resistance Versus Temperature ** ON A/C NOT FOR ALL
    For example, for OAT= 20 deg.C (68.00 deg.F) sensor value must be between 594 Ohms and 606 Ohms.
     (a) If the resistance is out of tolerance:
       1 Do a check of the resistance of sensor 3 between pins A/D and A/E for correct value.
       2 If the resistance of sensor 3 is between 370 Ohms and 715 Ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/D and A/E of sensor 3 AWM 304203 and ASM 304201.
       3 If the resistance of sensor 3 is more than 715 Ohms or less than 370 Ohms:
     (b) If the resistance is within the tolerance:
       1 Replace WHC-1 [2DG1] , AMM 30-42-34-000-001 and AMM 30-42-34-400-001.
       2 If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V to pins A/D and A/C and pins B/U and B/V to pins A/D and A/E and pins B/U and B/V to pins A/E and A/F.
       3 If the fault continues:
Subtask 30-42-00-810-098-B ** ON A/C NOT FOR ALL
G. If the test gives the maintenance message L FIXED WINDOW SENSOR associated with ECAM message ANTI-ICE L WINDSHIELD, or ANTI-ICE L WINDOW:
  • Disconnect the electrical connector from the left fixed window (7DG1) and do a check of the resistance between pins A/C and A/D on the receptacle of the left fixed window (7DG1) ASM 304201.
    F Sensor Resistance Versus Temperature ** ON A/C NOT FOR ALL
   (1) If the resistance is more than 715 ohms (open circuit) or less than 370 ohms (short circuit):
     (a) If the resistance of the sensor 2 is between 370 ohms and 715 ohms:
  • Connect pins B/U and B/V of the WHC1 (2DG1) to pins A/E and A/F of the left fixed window (7DG1).
     (b) If the resistance of the sensor 2 is more than 715 ohms or less than 370 ohms:
       1 If the fault continues:
  • Do a check and repair the wiring from the WHC1 (2DG1) to the left fixed window (7DG1), pins B/U and B/V to pins A/D and A/C ASM 304201.
   (2) If the resistance is between 370 ohms and 715 ohms:
     (a) Replace WHC-1 [2DG1] , AMM 30-42-34-000-001 and AMM 30-42-34-400-001.
     (b) If the fault continues:
  • Do a check and repair the wiring from the WHC1 (2DG1) to the left fixed window (7DG1), pins B/U and B/V to pins A/D and A/c ASM 304201.
Subtask 30-42-00-810-099-B ** ON A/C NOT FOR ALL
H. If the test gives maintenance message L FIXED WINDOW SENSOR associated with ECAM message ANTI-ICE L WINDSHIELD, or ANTI-ICE L WINDOW:
  • Disconnect the electrical connector from the L FIXED WINDOW (7DG1) and do a check of the resistance between pins A/C and A/D on the receptacle of the L FIXED WINDOW (7DG1).
    F Sensor Resistance Versus Temperature ** ON A/C NOT FOR ALL
   (1) If the resistance is more than 715 ohms (open circuit) (OAT more than 40 deg. C) or is less than 370 ohms (short circuit):
     (a) If the resistance of sensor 3 is between 370 ohms and 715 ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/D and A/E of sensor 3 AWM 304203 and ASM 304201.
     (b) If the resistance of sensor 3 is more than 715 ohms or less than 370 ohms:
       1 If the resistance of sensor 2 is between 370 ohms and 715 ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/E and A/F of sensor 2 AWM 304203 and ASM 304201.
       2 If the resistance is more than 715 ohms and less than 370 ohms:
       3 If the fault continues:
       4 If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V to pins A/D and A/C and pins B/U and B/V to pins A/D and A/E and pins B/U to B/V to pins A/E and A/F.
   (2) If the resistance is between 370 ohms and 715 ohms:
  • Verify the correct value of the resistance of temperature sensor connected to the WHC-1 (7DG1), ASM 304201.
    F Sensor Resistance Versus Temperature ** ON A/C NOT FOR ALL
    For example, for OAT= 20 deg.C (68.00 deg.F) sensor value must be between 594 Ohms and 606 Ohms.
     (a) If the resistance is out of tolerance:
       1 Do a check of the resistance of sensor 3 between pins A/D and A/E for correct value.
       2 If the resistance of sensor 3 is between 370 Ohms and 715 Ohms:
  • Connect pins B/U and B/V of the WHC-1 (2DG1) to pins A/D and A/E of sensor 3 AWM 304203 and ASM 304201.
       3 If the resistance of sensor 3 is more than 715 Ohms or less than 370 Ohms:
F Sensor Resistance Versus Temperature ** ON A/C NOT FOR ALL
         a Make sure that the connector pins are not damaged.
         b Do a check of the resistance of sensor 2 between pins A/E and A/F for correct value.
         c If the resistance of sensor 2 is correct:
  • Connect pins A/A and A/B of the WHC-1 (2DG1) to pins A/E and A/F of sensor ASM 304201.
         d If the resistance of sensor 2 is not correct:
       4 If the fault continues:
  • Do a check and repair the wiring from the WHC-1 (2DG1) to L FIXED WINDOW (7DG1) pins B/U and B/V to pins A/D and A/C and pins B/U and B/V to pins A/D and A/E and pins B/U and B/V to pins A/E and A/F.
       5 If the fault continues:
Subtask 30-42-00-710-069-A
I. Do the operational test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:29:41 UTC
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