TM 1–1520–238–T–3
15–32
Change 4
15–132 SIGNAL NAME:
FLIR SEL TO TEU (ACY) FLIR SELECT CMD (ACZ)
MEMORY LOCATION: 001245
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates night sensor selected.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
Location of fault if first digit on HOD is 4, 5, 6, or 7: troubleshoot TADS night sensor
(TM 1–1270–476–T).
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–133 SIGNAL NAME:
HDD SELECT
MEMORY LOCATION: 000412
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Selects HDD.
REMARKS: From ORT righthand grip through CPG MRTU Type III to FCC.
PASS:
If first digit on HOD is 2, 3, 6, or 7, go to paragraph 15–134.
FAIL: Location of fault: ORT righthand grip, wiring from ORT to CPG MRTU Type III, CPG MRTU
Type III. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–134 SIGNAL NAME:
ORT HDD SW TO TEU (ACY) HDD SW TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected HDD.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
Location of fault if third digit on HOD is 2, 4, 6, or 7: troubleshoot ORT (TM 1–1270–476–T).
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU, FCC.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–135 SIGNAL NAME:
IAT SWITCH
MEMORY LOCATION: 000413
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected IAT.
REMARKS: From ORT through CPG MRTU Type III to FCC.
PASS:
If second digit on HOD is 1, 4, or 5, go to paragraph 15–136.
FAIL: Location of fault: ORT LH grip, wiring from ORT to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–136 SIGNAL NAME:
IAT OFFSET SWITCH
MEMORY LOCATION: 000413
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected IAT OFFSET.
REMARKS: From ORT lefthand grip through CPG MRTU Type III to FCC.
PASS:
If first digit on HOD is 1, 2, or 3, go to paragraph 15–137.
FAIL: Location of fault: ORT LH grip, ORT, wiring from ORT to CPG MRTU Type III, CPG MRTU Type
III. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
