Honda Accord 2008 Manual page 2609

07/11/02 10:03:15 61TA0000_230_0165
Navigation System
System Description (cont'd)
Navigation Display Unit Inputs and Outputs
＊２０
Navigation Display Unit 28P Connector
Terminal
Number
1
2
3
4
5
6
8
9
10
: The shielded wires have a heat-shrink tube insulating the outside of the wire.
The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.
23-164
NAVIGATION DISPLAY UNIT 28P CONNECTOR
Wire Color Terminal Name Description
WHT ＋ B Continuous power
( B power ＋ source
source)
PUR ACC Power source for
(Accessory) accessory
＋
RED GA-NET BUS Data bus
(GA-NET GA-Net
bus positive)
GRY GA-NET BUS SH Shield for No. 3, 17
(GA-NET) terminals
GRN GA-NET ECU Data bus
＋
BUS (GA-NET)
(Display bus
positive)
＋
GRN SECURITY Security signal to
rear screen
WHT R SIG 1 Red color signal
(Red signal)
RED G SIG 1 Green color signal
(Green signal)
BLK GND Ground for display
(Ground) unit
Wire side of female terminals
Voltage (about)
Battery voltage If open: Screen completely off (no backlight visible).
If short to ground: Blows fuse No. 15 (10 A) in the
under-hood fuse/relay box.
Battery voltage If open: Display and buttons do not work.
at ACC (I) If short to ground: Blows fuse No. 18 (7.5 A) in the
driver's under-dash fuse/relay box.
＋ −
0 5 V pulses If open: Navigation buttons and touch screen do not
average 2.5 V work.
depends on bus If short to ground: Navigation buttons do not work.
traffic
0 V If open: No change to display.
If short to ground: No change to display.
＋ GA-Net 0 5 V pulses − If open: Navigation buttons do not work.
average 2.5 V If short to ground: Navigation buttons do not work.
depends on bus
traffic
0 V If open: The security system will set, and will not
trip when screen is removed.
If short to ground: The security system will set, and
will not trip when screen is removed.
0.7 V AC If open: Red color missing (see RGB Color
diagnostic).
If short to ground: Red color missing (see RGB
Color diagnostic).
0.7 V AC If open: Green color missing (see RGB Color
diagnostic).
If short to ground: Green color missing (see RGB
Color diagnostic).
0 V If open: No change to display.
If short to ground: No change to display.
Symptom