- make sure that the scoop and the choke of the TAT sensor 1 and TAT sensor 2 are not clogged or dirty.
(a) If the scoop or the choke of one TAT sensor is damaged:
- repair the defective TAT sensor.
(b) If the scoop and the choke of the TAT sensors are not damaged:
- disconnect the electrical connector of the TAT sensor 1
- do a check of the resistance between pins A/E and J and pins A/H and K of the TAT sensor 1.
1 If the resistance value between pins A/E and J and/or pins A/H
_
and K is not correct:
NOTE : The resistance value of the TAT sensors is:
____
- 500 ohms (plus or minus 0.2 ohm) at 0 deg.C (32 deg.F)
- 538.87 ohms (plus or minus 0.2 ohm) at 20 deg.C (60 deg.F).
- replace the SENSOR-TAT, 1 (11FP1) (Ref. AMM TASK 34-11-18-000-001) and (Ref. AMM TASK 34-11-18-400-001).
2 If the resistance value between pins A/E and J and/or pins A/H
_ and K is correct (Ref. NOTE above):
- shunt pins A/E and J of the electrical connector of the TAT sensor 1
- remove the ADIRU1 (Ref. AMM TASK 34-12-34-000-001)
- do a check of the resistance (R=1.04 ohm plus or minus 0.25 ohm) between pins AA/8H and 8J of the rack connector of the ADIRU1:
a If the resistance value is out of the specified limit:
_
- repair the above aircraft wiring (Ref. ASM 34-11/02)
- install the ADIRU1 (Ref. AMM TASK 34-12-34-400-001)
- remove the shunt between pins A/E and J of the electrical connector of the TAT sensor 1
- connect the electrical connector of the TAT sensor 1.
b If the resistance value is in the specified limit:
_
- shunt pins A/H and K of the electrical connector of the TAT sensor 1
- remove the ADIRU3
- do a check of the resistance (R=1.04 ohm plus or minus
0.25 ohm) between pins AA/8H and 8J of the rack connector of the ADIRU3: . If the resistance value is out of the specified limit: repair the above aircraft wiring (Ref. ASM 34-11/02) install the ADIRU1 install the ADIRU3 remove the shunts between pins A/E and J and pins A/H and K of the electrical connector of the TAT sensor 1
「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 ∞∞34-13-81∞∞∞∞∞∞∞∞∞∞Page 225
Nov 01/00R CES
connect the electrical connector of the TAT sensor 1. . If the resistance value is in the specified limit: disconnect the electrical connector of the TAT sensor 2 do a check of the resistance between pins A/E and J of the TAT sensor 2
* If the resistance value between between pins A/E and J
is not correct (Ref. NOTE Para.A(2)(b)1_):
replace the SENSOR-TAT, 2 (11FP2) (Ref. AMM TASK 34-11-18-000-001) and (Ref. AMM TASK 34-11-18-400-001).
* If the resistance value between pins A/E and J is
correct (Ref. NOTE Para.A(2)(b)1_):
Shunt pins A/E and J of the electrical connector of the
TAT sensor 2
remove the ADIRU2 (Ref. AMM TASK 34-12-34-000-001)
do a check of the resistance (R=1.04 ohm plus or minus
0.25 ohm) between pins AA/8H and 8J of the rack connector
of the ADIRU2:
** If the resistance value is out of the specified limit:
repair the above aircraft wiring (Ref. ASM 34-11/02)
install the three ADIRUs
remove the shunts between pins A/E and J and pins A/H and
K of the electrical connector of the TAT sensor 1
connect the electrical connector of the TAT sensor 1
remove the shunt between pins A/E and J of the electrical
connector of the TAT sensor 2
connect the electrical connector of the TAT sensor 2.
** If the resistance value is in the specified limit:
install a new ADIRU-1 (1FP1)
install the ADIRU2 and the ADIRU3
remove the shunts between pins A/E and J and pins A/H and
K of the electrical connector of the TAT sensor 1
connect the electrical connector of the TAT sensor 1
remove the shunt between pins A/E and J of the electrical
connector of the TAT sensor 2
connect the electrical connector of the TAT sensor 2.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 导航 NAVIGATION 2(19)
