Figure 5-15 - View Of J271 Connector On The Gad 27; Table 5-18 - Gtp 59 Lead Wire Functions; Table 5-19 - P271/J271 Pin Functions - Garmin G3X Touch Maintenance Manual

5.12.4 GTP 59 Harness
The GTP59 is an OAT sensing device. The connection to this LRU is made via pre-installed lead wires and it
is acceptable to use crimp splices to extend the lead wire harness to the GSU. The pre-installed lead wires
are ten feet in length. Reference Table 5-18 for lead wire functions. For specific wiring information refer to
G3X Touch EFIS Part 23 AML STC Installation Manual (190-02472-01).
PIN
WHITE
BLUE
ORANGE
5.12.5 GAD 27 Aircraft Harness/LRU Connectors
This section describes the GAD 27 aircraft harness and the interface connectors on the GAD 27. The GAD
27 connector designation is J271 and the aircraft harness connector is designated as P271. GAD 27
connector J272 is not used. GAD 27 also has a terminal block TB273.
5.12.5.1 Aircraft Harness Connector P271
The aircraft harness connector P271 is a 50-socket D-sub plug connector and interfaces to the GAD 27
connector J271. A pinout arrangement of J271 is shown in Figure 5-15 and connector pin functions are
shown in Table 5-19.
PIN
1
2
3
4
5
6
7
8
9
10
11
12
Maintenance Manual
G3X Touch EFIS Part 23 AML STC
Table 5-18 – GTP 59 Lead Wire Functions
WIRE
TEMP PROBE POWER IN
TEMP PROBE OUT HI
TEMP PROBE OUT LO
Figure 5-15 – View of J271 Connector on the GAD 27
Table 5-19 – P271/J271 Pin Functions
PIN NAME/FUNCTION
CAN HI
CAN LO
CAN BUS TERM
GAD 27 POWER GND
RESERVED
RESERVED
RESERVED
GAD 27 POWER GROUND
RESERVED
RESERVED
RESERVED
RESERVED
Page 52
I/O
IN
OUT
OUT
I/O
I/O
I/O
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190-02472-02
Revision 2