- replace the APU INLET PRESSURE TRANSDUCER (P22) (Ref. AMM TASK 49-51-21-000-001) and (Ref. AMM TASK 49-51-21-400-001).
(b) If the resistance is > 75 Ohms:
- disconnect the electrical connector P23 of the TOTAL PRESSURE TRANSDUCER (P23). Do a resistance check across pin 20 and pin 21 of the electrical connector P2 again.
1 If the resistance is < 75 Ohms:
_
- replace the TOTAL PRESSURE TRANSDUCER (P23) (Ref. AMM TASK 49-51-17-000-002) and (Ref. AMM TASK 49-51-17-400-002).
2 If the resistance is > 75 Ohms:
_
- disconnect the electrical connector P24 of the DELTA PRESSURE TRANSDUCER (P24).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A267
201-210, Config-1 Aug 01/05 CES Do a resistance check across pin 20 and pin 21 of the electrical connector P2 again.
a If the resistance is < 75 Ohms:
_
- replace the DELTA PRESSURE TRANSDUCER (P24) (Ref. AMM TASK 49-51-16-000-002) and (Ref. AMM TASK 49-51-16-400-002).
b If the resistance is > 75 Ohms:
_
- replace APU wiring harness.
(2) If the resistance is > 75 Ohms:
- do a check and repair of the aircraft wiring between ECB (59KD) AB/A1,A4 and electrical connector P2/20,21 (Ref. ASM 49-61/01).
(a) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003)
**ON A/C 001-049, 101-105, 151-199, 201-210,
Post SB 49-1062 For A/C 001-049,101-105,151-154,201-207,
A. If the APU GND SCANNING menu gives the maintenance message:
CHECK PRESSURE XDCR WIRING (8001KM) / ECB (59KD)
associated with Fault Code Number (FCN) 31
- disconnect the electrical connector P2 at the APU firewall. Use a multimeter to do a resistance check across pin 20 and pin 21 of the electrical connector P2.
(1) If the resistance is < 75 Ohms:
- disconnect the electrical connector P22 of the APU INLET PRESSURE TRANSDUCER (8048KM). Do a resistance check across pin 20 and pin 21 of the electrical connector P2 again.
(a) If the resistance is < 75 ohms:
- replace the APU INLET PRESSURE TRANSDUCER (8048KM) (Ref. AMM TASK 49-51-21-000-001) and (Ref. AMM TASK 49-51-21-400-001).
(b) If the resistance is > 75 Ohms:
- disconnect the electrical connector P23 of the TOTAL PRESSURE TRANSDUCER (8044KM). Do a resistance check across pin 20 and pin 21 of the electrical connector P2 again.
1 If the resistance is < 75 Ohms:
_
- replace the TOTAL PRESSURE TRANSDUCER (8044KM) (Ref. AMM TASK 49-51-17-000-002) and (Ref. AMM TASK 49-51-17-400-002).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A268
201-210, Config-1 Aug 01/05 CES 2 If the resistance is > 75 Ohms:
_
- disconnect the electrical connector P24 of the DELTA PRESSURE TRANSDUCER (8043KM). Do a resistance check across pin 20 and pin 21 of the electrical connector P2 again.
a If the resistance is < 75 Ohms:
_
- replace the DELTA PRESSURE TRANSDUCER (8043KM) (Ref. AMM TASK 49-51-16-000-002) and (Ref. AMM TASK 49-51-16-400-002).
b If the resistance is > 75 Ohms:
_
- replace APU wiring harness.
(2) If the resistance is > 75 Ohms:
- do a check and repair of the aircraft wiring between ECB (59KD) AB/A1,A4 and electrical connector P2/20,21 (Ref. ASM 49-61/01).
(a) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003)
R **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,
B. Do a check of the APU GND SCANNING menu to verify the fault is not present.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A269
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本文链接地址：A320 Trouble Shooting Manual 排故手册 机载辅助动力 2(98)
