W DOC AIRBUS | TSM A320F

Zone Cont Electrical Component with Short Circuit (Primary Channel)

TASK 21-63-00-810-844-A
Zone Cont Electrical Component with Short Circuit (Primary Channel)

1. Possible Causes
  • ZONE CONTROLLER [8HK]
  • TEMP SENSOR RH MIXER [25HK]
  • TRIM VALVE CKPT [11HK]
  • TRIM VALVE FWD CAB [12HK]
  • TRIM VALVE AFT CAB [13HK]
  • TEMP SENSOR CKPT DUCT [15HK]
  • TEMP SENSOR FWD CAB DUCT [16HK]
  • TEMP SENSOR AFT CAB DUCT [17HK]
  • SENSOR-TEMPERATURE, COCKPIT [21HK]
  • TEMP SENSOR FWD CAB [22HK]
  • TEMP SENSOR AFT CAB [23HK]
  • TEMP SENSOR LH MIXER [24HK]
  • CKPT TEMP SELECTOR [27HK]
  • FWD CAB TEMP SELECTOR [28HK]
  • AFT CAB TEMP SELECTOR [29HK]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 21-63-00-710-004
Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU
ASM 216302
ASM 216303
AMM 21-63-11-000-001
Removal of the Temperature Selector
AMM 21-63-11-400-001
Installation of the Temperature Selector
AMM 21-63-15-000-001
Removal of the Duct Temperature Sensors
AMM 21-63-15-400-001
Installation of the Duct Temperature Sensors
AMM 21-63-16-000-001
Removal of the Mixer Temperature Sensor
AMM 21-63-16-400-001
Installation of the Mixer Temperature Sensor
AMM 21-63-17-000-001
Removal of the Temperature Sensors
AMM 21-63-17-400-001
Installation of the Temperature Sensors
AMM 21-63-34-000-001
Removal of the Zone Controller
AMM 21-63-34-400-001
Installation of the Zone Controller
AMM 21-63-51-000-001
Removal of the Trim Air Valve
AMM 21-63-51-400-001
Installation of the Trim Air Valve
3. Fault Confirmation
Subtask 21-63-00-710-129-A ** ON A/C NOT FOR ALL
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU AMM 21-63-00-710-004.
NOTE: If a fault is detected, the ZC gives a fault code for shop maintenance in addition to the related CFDS message(s). For detailed information see the applicable Page Block 301.
4. Fault Isolation
Subtask 21-63-00-810-135-B ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message ZONE CONT OR SENSOR SUPPLY SHORT:
   (1) If the fault continues:
  • disconnect the electrical connector (25HKA) from the TEMP SENSOR RH MIXER [25HK] AMM 21-63-16-000-001.
  • make sure that the electrical connector is clean and in the correct condition.
  • do a check for 5 VDC at the electrical connector (25HKA) between pins E and F (5 VDC from zone controller primary channel) ASM 216303.
     (a) If the voltage is not between 4.8 VDC and 5.2 VDC:
  • disconnect the electrical connector (11HKA) AMM 21-63-51-000-001.
  • make sure that the electrical connector is clear and in the correct condition.
  • do a check for 5 VDC again.
       1 If the voltage is between 4.8 VDC and 5.2 VDC:
       2 If the voltage is not between 4.8 VDC and 5.2 VDC:
     (b) If the voltage is between 4.8 VDC and 5.2 VDC:
   (2) If the fault continues:
  • open the CB's 1HK (V17), 2HK (V18), 3HK (V19) and 4HK (V20).
  • remove the ZONE CONTROLLER [8HK] and AMM 21-63-34-000-001.
  • disconnect the electrical connector (11HKA) from the TRIM VALVE CKPT [11HK] AMM 21-63-51-000-001.
  • at the electrical connector (11HKA) do a check for a short circuit:
    between pins U and J, U and K, U and L, J and K, J and L, K and L, C and D and,
    between GND and pins U, J,K, L and C ASM 216302.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (11HKA) pin U and ZC connector (8HKAB) pin 13A,
    connector (11HKA) pin J and ZC connector (8HKAB) pin 12B,
    connector (11HKA) pin K and ZC connector (8HKAB) pin 13B,
    connector (11HKA) pin L and ZC connector (8HKAB) pin 14B,
    connector (11HKA) pin C and ZC connector (8HKAB) pin 7C ASM 216302.
  • connect the electrical connector (11HKA) AMM 21-63-51-400-001.
   (3) If the fault continues:
  • disconnect the electrical connector (12HKA) from the TRIM VALVE FWD CAB [12HK] AMM 21-63-51-000-001.
  • at the electrical connector (12HKA) do a check for a short circuit:
    between pins U and J, U and K, U and L, J and K, J and L, K and L, C and D and,
    between GND and pins U, J,K, L and C ASM 216302.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (12HKA) pin U and ZC connector (8HKAB) pin 11A,
    connector (12HKA) pin J and ZC connector (8HKAB) pin 10A,
    connector (12HKA) pin K and ZC connector (8HKAB) pin 10B,
    connector (12HKA) pin L and ZC connector (8HKAB) pin 11B,
    connector (12HKA) pin C and ZC connector (8HKAB) pin 6C ASM 216302.
  • connect the electrical connector (12HKA) AMM 21-63-51-400-001.
   (4) If the fault continues:
  • disconnect the electrical connector (13HKA) from the TRIM VALVE AFT CAB [13HK] AMM 21-63-51-000-001.
  • at the electrical connector (13HKA) do a check for a short circuit:
    between pins U and J, U and K, U and L, J and K, J and L, K and L, C and D and,
    between GND and pins U, J,K, L and C ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (13HKA) pin U and ZC connector (8HKAB) pin 15A,
    connector (13HKA) pin J and ZC connector (8HKAB) pin 15C,
    connector (13HKA) pin K and ZC connector (8HKAB) pin 15D,
    connector (13HKA) pin L and ZC connector (8HKAB) pin 15E,
    connector (13HKA) pin C and ZC connector (8HKAB) pin 5C ASM 216303.
  • connect the electrical connector (12HKA) AMM 21-63-51-400-001.
   (5) If the fault continues:
  • disconnect the electrical connector (15HKA) from the TEMP SENSOR CKPT DUCT [15HK] AMM 21-63-15-000-001.
  • at the electrical connector (15HKA) do a check for a short circuit:
    between pins E and F and,
    between GND and pins E and F ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (15HKA) pin E and ZC connector (8HKAA) pin 9A,
    connector (15HKA) pin F and ZC connector (8HKAA) pin 9B ASM 216303.
  • connect the electrical connector (15HKA) AMM 21-63-15-400-001.
   (6) If the fault continues:
  • disconnect the electrical connector (16HKA) from the TEMP SENSOR FWD CAB DUCT [16HK] AMM 21-63-15-000-001.
  • at the electrical connector (16HKA) do a check for a short circuit:
    between pins E and F and,
    between GND and pins E and F ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (16HKA) pin E and ZC connector (8HKAA) pin 9C,
    connector (16HKA) pin F and ZC connector (8HKAA) pin 9D ASM 216303.
  • connect the electrical connector (16HKA) AMM 21-63-15-400-001.
   (7) If the fault continues:
  • disconnect the electrical connector (17HKA) from the TEMP SENSOR AFT CAB DUCT [17HK] AMM 21-63-15-000-001.
  • at the electrical connector (17HKA) do a check for a short circuit:
    between pins E and F and,
    between GND and pins E and F ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (17HKA) pin E and ZC connector (8HKAA) pin 10A,
    connector (17HKA) pin F and ZC connector (8HKAA) pin 10B ASM 216303.
  • connect the electrical connector (17HKA) AMM 21-63-15-400-001.
   (8) If the fault continues:
  • disconnect the electrical connector (21HKA) from the SENSOR-TEMPERATURE, COCKPIT [21HK] AMM 21-63-17-000-001.
  • at the electrical connector (21HKA) do a check for a short circuit:
    between pins A and B and,
    between GND and pins A and B ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (21HKA) pin A and ZC connector (8HKAA) pin 7A,
    connector (21HKA) pin B and ZC connector (8HKAA) pin 7B ASM 216303.
  • connect the electrical connector (21HKA) AMM 21-63-17-400-001.
   (9) If the fault continues:
  • disconnect the electrical connector (22HKA) from the TEMP SENSOR FWD CAB [22HK] AMM 21-63-17-000-001.
  • at the electrical connector (22HKA) do a check for a short circuit:
    between pins A and B and,
    between GND and pins A and B ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (22HKA) pin A and ZC connector (8HKAA) pin 7C,
    connector (22HKA) pin B and ZC connector (8HKAA) pin 7D ASM 216303.
  • connect the electrical connector (22HKA) AMM 21-63-17-400-001.
   (10) If the fault continues:
  • disconnect the electrical connector (23HKA) from the TEMP SENSOR AFT CAB [23HK] AMM 21-63-17-000-001.
  • at the electrical connector (23HKA) do a check for a short circuit:
    between pins A and B and,
    between GND and pins A and B ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (23HKA) pin A and ZC connector (8HKAA) pin 8A,
    connector (23HKA) pin B and ZC connector (8HKAA) pin 8B ASM 216303.
  • connect the electrical connector (23HKA) AMM 21-63-17-400-001.
   (11) If the fault continues:
  • disconnect the electrical connector (24HKA) from the TEMP SENSOR LH MIXER [24HK] AMM 21-63-16-000-001.
  • at the electrical connector do a check for a short circuit:
    between pins E and F and,
    between GND and pins E and F ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (24HKA) pin E and ZC connector (8HKAA) pin 8C,
    connector (24HKA) pin F and ZC connector (8HKAA( pin 8D ASM 216303.
  • connect the electrical connector (24HKA) AMM 21-63-16-400-001.
   (12) If the fault continues:
  • disconnect the electrical connector (25HKA) from the TEMP SENSOR RH MIXER [25HK] AMM 21-63-16-000-001.
  • at the electrical connector (25HKA) do a check for a short circuit:
    between pins E and F and,
    between GND and pins E and F ASM 216303.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (25HKA) pin E and ZC connector (8HKAA) pin 10C,
    connector (25HKA) pin F and ZC connector (8HKAA) pin 10D ASM 216303.
  • connect the electrical connector (25HKA) AMM 21-63-16-400-001.
   (13) If the fault continues:
  • disconnect the electrical connector (27HKA) from the CKPT TEMP SELECTOR [27HK] AMM 21-63-11-000-001.
  • at the electrical connector (27HKA) do a check for a short circuit:
    between pins 2 and 3, 2 and 4, 3 and 4 and,
    between GND and pins 2, 3, and 4 ASM 216302.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (27HKA) pin 2 and ZC connector (8HKAA) pin 13A,
    connector (27HKA) pin 3 and ZC connector (8HKAA) pin 14A,
    connector (27HKA) pin 4 and ZC connector (8HKAA) pin 15A ASM 216302.
  • connect the electrical connector (27HKA) AMM 21-63-11-400-001.
   (14) If the fault continues:
  • disconnect the electrical connector (28HKA) from the FWD CAB TEMP SELECTOR [28HK] AMM 21-63-11-000-001.
  • at the electrical connector (28HKA) do a check for a short circuit:
    between pins 2 and 3, 2 and 4, 3 and 4 and,
    between GND and pins 2, 3 and 4 ASM 216302.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (28HKA) pin 2 and ZC connector (8HKAA) pin 13B,
    connector (28HKA) pin 3 and ZC connector (8HKAA) pin 14B,
    connector (28HKA) pin 4 and ZC connector (8HKAA) pin 15B ASM 216302.
  • connect the electrical connector (28HKA) AMM 21-63-11-400-001.
   (15) If the fault continues:
  • disconnect the electrical connector (29HKA) from the AFT CAB TEMP SELECTOR [29HK] AMM 21-63-11-000-001.
  • at the electrical connector (29HKA) do a check for a short circuit:
    between pins 2 and 3, 2 and 4, 3 and 4 and,
    between GND and pins 2, 3 and 4 ASM 216302.
     (a) If there is no short circuit:
     (b) If there is a short circuit:
  • repair the related wiring between:
    connector (29HKA) pin 2 and ZC connector (8HKAA) pin 13C,
    connector (29HKA) pin 3 and ZC connector (8HKAA) pin 14C,
    connector (29HKA) pin 4 and ZC connector (8HKAA) pin 15C ASM 216302.
  • connect the electrical connector (29HKA) AMM 21-63-11-400-001.
  • install the removed ZONE CONTROLLER [8HK] and AMM 21-63-34-000-001.
  • close the CB's 1HK (V17), 2HK (V18), 3HK (V19) and 4HK (V20).
Subtask 21-63-00-710-130-A ** ON A/C NOT FOR ALL
B. Do the test as given in the Para. 3.A.
5. Close-up
Subtask 21-63-00-860-080-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:25:04 UTC
"WTRUIB" 2025