3. Fault Confirmation
__________________
 A. Test Do the operational test of the TPIS (Ref. AMM TASK 32-49-00-710-001).
 4. Fault Isolation
_______________
 A. If the operational test gives the maintenance message CHECK LGCIU2 SHOCK ABSORBER SIGNAL:
 - replace the LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 (1) If the fault continues:

 - replace the DETECTOR UNIT-TPIS (2GV) (Ref. AMM TASK 32-49-34-000-001) (Ref. AMM TASK 32-49-34-400-001).

 (2) If the fault continues:

 - do a check and repair the wiring from the TPIU (2GV) to the LGCIU 2 (5GA2) pin AB/10A to pin AB/2D (Ref. ASM 32-49/01).
 B. Do the test given in Para. 3.A.
 「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 : 051-099, ∞∞32-49-00∞∞∞∞∞∞∞∞∞∞Page 230
 May 01/05 CES

 TASK 32-49-00-810-823

 Loss of the 28VDC Power Supply of the TPIU
 1. Possible Causes
_______________
 - DETECTOR UNIT-TPIS (2GV)

 - wiring from the TPIS (2GV) pin AA/15B to the ground terminal

 - wiring from the TPIS (2GV) pin AA/15A to the circuit breaker (1GV)

 - C/B-HYDRAULIC/TIRE/PRESS (1GV)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-49-00-710-001 Operational Test of the Tire Pressure Indicating
 System (TPIS) AMM 32-49-34-000-001 Removal of the TPIS Detection Unit (2GV) AMM 32-49-34-400-001 Installation of the TPIS Detection Unit (2GV) ASM 32-49/01
 3. Fault Confirmation
__________________
 A. Test Do the operational test of the TPIS (Ref. AMM TASK 32-49-00-710-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message CHECK TPIU DC 1PP CIRCUIT:
 - do a check of the circuit breaker (1GV) status:
 (1) If the circuit breaker is closed:
 - do a check for 28VDC at pin AA/15A of the TPIS (2GV) (Ref. ASM 32-49/01).
 (a) If there is 28VDC:

 - replace the DETECTOR UNIT-TPIS (2GV) (Ref. AMM TASK 32-49-34-000-001) and (Ref. AMM TASK 32-49-34-400-001).

 (b) If there is no 28VDC:

 - do a check for a ground signal at pin AA/15B of the TPIS (2GV) (Ref. ASM 32-49/01).
 1 If there is no ground signal:
_

 - repair the wiring from the TPIS (2GV) pin AA/15B to the ground terminal (Ref. ASM 32-49/01).

 2 If there is ground signal:
_

 - do a check of the wiring from the TPIS (2GV) pin AA/15A to the circuit breaker (1GV) (Ref. ASM 32-49/01).
 a If there is no continuity:
_

 - repair the related wiring.
 b If there is continuity:

_

 - replace the C/B-HYDRAULIC/TIRE/PRESS (1GV) (Ref. ASM 32-49/01).
 (2) If the circuit breaker is open:
 - close the circuit breaker:
 (a) If it trips:
 - replace the TPIS (2GV) (Ref. AMM TASK 32-49-34-000-001) and (Ref. AMM TASK 32-49-34-400-001).
 1 If the fault continues:
_

 - do a check for a short to ground at the wiring from the TPIS (2GV) pin AA/15A to the circuit breaker (1GV) (Ref. ASM 32-49/01).
 a If there is a short to ground:
_

 - repair the related wiring. b If there is no short to ground:
_ - replace the circuit breaker (1GV) (Ref. ASM 32-49/01).

 B. Do the test given in Para. 3.A.

 TASK 32-49-00-810-824

 TPIS Value Shown on the Lower ECAM DU Less than or Equal to 95 % Pressure Gage Value for one Wheel
 1. Possible Causes
_______________
 - DETECTOR UNIT-TPIS (2GV)
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power AMM 31-60-00-860-001 EIS Start Procedure AMM 32-41-00-210-003 Inspection/Check of the Pressure of Tires AMM 32-49-15-000-001 Removal of the NLG Tire Pressure Transducer AMM 32-49-15-400-001 Installation of the NLG Tire Pressure Transducer AMM 32-49-16-000-005 Removal of the MLG Tire-Pressure Transducer
　
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