W DOC AIRBUS | TSM A320F

Failure of the Bleed Pressure Regulator Valve Control Solenoid or its Wiring

TASK 36-11-00-810-944-A
Failure of the Bleed Pressure Regulator Valve Control Solenoid or its Wiring

1. Possible Causes
  • C/B-AIR BLEED/ENG 1/CTL [3HA1]
  • wiring
  • SOLENOID-BLEED PRESS REG V CTL, ENG 1 [10HA1]
  • P/BSW-ENG 1 BLEED [4HA1]
  • C/B-AIR BLEED/ENG 2/CTL [3HA2]
  • SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2]
  • P/BSW-ENG 2 BLEED [4HA2]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 24-00-00-810-803-A
Circuit Breaker Tripped and/or C/B TRIPPED Warning
ASM 361101
ASM 361102
AMM 36-11-55-000-001
Removal of the Bleed-Pressure-Regulator Valve Control-Solenoid
AMM 36-11-55-400-001
Installation of the Bleed-Pressure-Regulator Valve Control-Solenoid
3. Fault Confirmation
Subtask 36-11-00-860-064-A ** ON A/C NOT FOR ALL
A. Test.
   (1) Not applicable.
4. Fault Isolation
Subtask 36-11-00-865-065-A ** ON A/C NOT FOR ALL
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/CTL3HA1D12
122VUAIR BLEED/ENG 2/CTL3HA2Z23
Subtask 36-11-00-810-236-A ** ON A/C NOT FOR ALL
B. If the fault symptom is identified by the status message ONE PACK ONLY IF WAI ON:
  • On the overhead circuit breaker panel 49VU, do a check of the status of the AIR BLEED/ENG 1/CTL circuit breaker (3HA1).
   (1) If the circuit breaker (3HA1) is open:
     (a) If the fault continues:
  • Replace the C/B-AIR BLEED/ENG 1/CTL [3HA1] .
   (2) If the circuit breaker (3HA1) is closed:
  • Do a check for 28VDC at the pin A/1 of the connector of the engine 1 bleed pressure regulator valve control solenoid (10HA1) with the ENG 1 BLEED pushbutton switch (4HA1) released (OFF legend on) ASM 361101.
     (a) If there is 28VDC:
  • Do a check for a ground signal at the pin A/2 of the connector of the engine 1 bleed pressure regulator valve control solenoid (10HA1) ASM 361101.
       1 If there is no ground signal:
  • Repair or replace the wiring as necessary.
       2 If there is a ground signal:
     (b) If there is no 28VDC:
  • Do a check for 28VDC at the pin A/D2 of the ENG 1 BLEED pushbutton switch (4HA1) ASM 361101.
       1 If there is 28VDC:
  • Replace the P/BSW-ENG 1 BLEED [4HA1] .
         a If the fault continues:
  • Do a check and repair the wiring between the pin A/1 of the bleed pressure regulator valve control solenoid and the pin A/D3 of the ENG 1 BLEED pushbutton switch ASM 361101.
       2 If there is no 28VDC:
  • Do a check and repair the wiring between the pin A/D2 of the ENG 1 BLEED pushbutton switch and the pin 2 of the circuit breaker 3HA1 ASM 361101.
         a If the fault continues:
  • Replace the C/B-AIR BLEED/ENG 1/CTL [3HA1] .
   (3) If the fault continues:
  • On the rear circuit breaker panel 122VU, do a check of the status of the AIR BLEED/ENG 2/CTL circuit breaker (3HA2).
     (a) If the circuit breaker (3HA2) is open:
       1 If the fault continues:
  • Replace the C/B-AIR BLEED/ENG 2/CTL [3HA2] .
     (b) If the circuit breaker (3HA2) is closed:
  • Do a check for 28VDC at the pin A/1 of the connector of the engine 2 bleed pressure regulator valve control solenoid (10HA2) with the ENG 2 BLEED pushbutton switch (4HA2) released (OFF legend on) ASM 361102.
       1 If there is 28VDC:
  • Do a check for a ground signal at the pin A/2 of the connector of the engine 2 bleed pressure regulator valve control solenoid (10HA2) ASM 361102.
         a If there is no ground signal:
  • Repair or replace the wiring as necessary.
         b If there is a ground signal:
       2 If there is no 28VDC:
  • do a check for 28VDC at the pin A/D2 of the ENG 2 BLEED pushbutton switch (4HA2) ASM 361102.
         a If there is 28VDC:
  • Replace the P/BSW-ENG 2 BLEED [4HA2] .

    . If the fault continues:
    - Do a check and repair the wiring between the pin A/1 of the bleed pressure regulator valve control solenoid and the pin A/D3 of the ENG 2 BLEED pushbutton switch ASM 361102.
         b If there is no 28VDC:
  • Do a check and repair the wiring between the pin A/D2 of the ENG 2 BLEED pushbutton switch and the pin 2 of the circuit breaker 3HA2 ASM 361102.

    . If the fault continues:
    - Replace the C/B-AIR BLEED/ENG 2/CTL [3HA2] .
Subtask 36-11-00-710-397-A ** ON A/C NOT FOR ALL
C. After the subsequent flight, make sure that the fault does not continue.
[Rev.8 from Aug 2018] 2026.04.04 04:33:50 UTC
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