(b) If the fault continues:
 - do a check and repair the wiring from the PHC 2 (6DA2) to the pitot probe 2 (9DA2) pin A/H to pin A/B (Ref. ASM 30-31/01).
 B. Do the operational test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞30-31-00∞∞∞∞∞∞∞∞∞∞Page 226
 May 01/03R
 CES  Loss of the GND/FLT Information (PHC 2)

 1. Possible Causes
_______________
 - PROX SNSR-R L/G EXT, SYS 1 (20GA)

 - PROX SNSR-R L/G EXT, SYS 2 (22GA)

 - LGCIU-1 (5GA1)

 - PHC-2 (6DA2)

 - LGCIU-2 (5GA2)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-31-00-710-001 Operational Test of the Probe Ice Protection AMM 30-31-34-000-002 Removal of the Probe Heat Computer (PHC) (6DA1,6DA2,6DA3) AMM 30-31-34-400-002 Installation of the Probe Heat Computer (PHC)
 (6DA1,6DA2,6DA3) AMM 32-00-00-860-001 Flight Configuration Precautions AMM 32-31-71-000-001 Removal of the LGCIU (5GA1, 5GA2) AMM 32-31-71-400-001 Installation of the LGCIU (5GA1, 5GA2) AMM 32-31-73-000-001 Removal of the Proximity-Sensors 9GA(8GA),
 11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA), 35GA(34GA)
 AMM 32-31-73-200-001  Inspection of the MLG Proximity Sensor and Target Clearances
 AMM 32-31-73-400-001  Installation of the Proximity-Sensors 9GA(8GA), 11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA)...
 ASM 30-31/02
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the probe ice protection (Ref. AMM TASK 30-31-00-710-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞30-31-00∞∞∞∞∞∞∞∞∞∞Page 227
 May 01/03R
 CES

 4. Fault Isolation
_______________

R A. If the ECAM warning message ANTI ICE F/O PITOT comes into view only or R associated with the maintenance message CHECK LGCIU - PHC2 INTERFACE and R if the loss of GND/FLT information occurred:
 - make sure that there is no maintenance message related to the landing gear system (Ref. ATA 32).
 (1) If there is one or more maintenance message(s):

 - do the related trouble shooting.

 (2) If there is no maintenance message:

 - do the inspection of the MLG proximity sensor and target clearances (Ref. AMM TASK 32-31-73-200-001).
 (a) If the fault continues:

 - replace the PROX SNSR-R L/G EXT, SYS 1 (20GA) and PROX SNSR-R L/G EXT, SYS 2 (22GA), (Ref. AMM TASK 32-31-73-000-001) and (Ref. AMM TASK 32-31-73-400-001).

 (b) If the fault continues:

 - do a check for ground at pin A/E and/or pin A/D and/or pin A/I of the PHC 2 (6DA2).
 1 If there is no ground signal:
_
 - replace the LGCIU-1 (5GA1) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 2 If there is a ground signal:
_ Simulate flight configuration: - on the pannel 49VU, pull the L/G/LGCIU/SYS1/NORM circuit
 breaker. - on the pannel 121VU, pull the HYDRAULIC/LGCIU/SYS2 circuit breaker.
 NOTE : Make sure you obey the flight configuration precautions
____ (Ref. AMM TASK 32-00-00-860-001).
 - do a check for ground at PIN A/E and/or PIN A/D and/or PIN A/I of the PHC2 (6DA2).
 a If there is a ground signal:
_
 - replace the LGCIU-1 (5GA1), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 b If there is no ground signal:
_
 - replace the PHC-2 (6DA2), (Ref. AMM TASK 30-31-34-000-002) and (Ref. AMM TASK 30-31-34-400-002).
 c If the fault continues:
_
 - replace the LGCIU-2 (5GA2).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞30-31-00∞∞∞∞∞∞∞∞∞∞Page 228
 May 01/03 CES d If the fault continues:

_
 - do a check and repair the wiring from the PHC 2 pin A/E to the LGCIU 1 pin AB/14E and/or from the PHC 2 pin A/D to the LGCIU 2 pin AB/14E (Ref. ASM 30-31/02).
 B. Do the operational test given in Para. 3.
　
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