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Navigation unit connector A (20P) ('07 model)

Fig 1: Identifying Navigation Unit Connector A (20P) (07 Model)
G05527448Courtesy of AMERICAN HONDA MOTOR CO., INC.
NAVIGATION UNIT CONNECTOR A (20P) ('07 MODEL)

Terminal Number Wire Color Terminal Name Description Voltage (about) Symptom
A1 WHT R SIG (Red signal) Red color signal 0.2 V AC average in RGB color diagnostic mode If open: Red color missing (see Color diagnostic).
If short to ground: Red color missing (see RGB Color diagnostic).
A2 RED G SIG (Green signal) Green color signal 0.2 V AC average in RGB color diagnostic mode If open: Green color missing (see RGB Color diagnostic).
If short to ground: Green color missing (see RGB Color diagnostic).
A3 GRY(1) SIG SH (Shield signal) Shield for terminals No. 1, 2, 11, 12, 13 0 V If open: No change to display.
If short to around: No change to display.
A4 RED/BLU AC-SI (A/C Signal input) A/C input signal 0-battery voltage pulses If open: Voice control does not work for HVAC.
If short to ground: Voice control does not work for HVAC.
A5 RED/BLK ILL (+) (Illumination positive) Parking light on signal from dash and console lights. Lights on = battery voltage, Lights off = 0 V If open: When brightness = Auto, night mode for the display is inoperative when lights on.
If short to ground: Blows fuse No. 7 (7.5 A) in the passenger's under-dash fuse/relay box.
A9 GRY(1) GA-NET DISP BUS SH (Shield display bus) Shield for display bus terminals No. 10, 20 0 V If open: No change to display.
If short to ground: No change to display.
A10 LT BLU GA-NET DISP BUS (+) (Display bus positive) Data bus (+) GA-Net 0-5 V pulses average 2.5 V depends on bus traffic If open: Navigation buttons, touch screen and XM radio do not work.
If short to ground: Navigation buttons and touch screen do not work.
A11 YEL B SIG (Blue signal) Blue color signal 0.2 V AC average in RGB color diagnostic mode If open: Blue color missing (see RGB Color diagnostic).
If short to ground: Blue color missing (see RGB Color diagnostic).
A12 BRN C SIG (Composite signal) Composite video (vertical/horizontal) Synchronizing signal 0.2 V AC average in RGB color diagnostic mode If open: Picture rolls horizontally, colors still visible.
If short to ground: Picture rolls horizontally, colors still visible.
A13 BLU GND SIG (Ground signal) Ground for color signal 0 V If open: No change to display
If short to ground: No change to display.
A14 YEL/GRN AC-SO (A/C Signal output) A/C output signal 0-battery voltage pulses If open: A/C voice control does not work for HVAC.
If short to ground: A/C voice control does not work for HVAC.
A15 GRN/BLK AC-CK (A/C Clock signal) Time set sync signal 0-battery voltage pulses If open: A/C voice control does not work.
If short to ground: A/C voice control does not work.
A20 PUR GA-NET DISP BUS-(Display bus negative) Data bus (-) GA-Net 0-5 V pulses normally 2.5 V (depends on BUS traffic) If open: Navigation buttons, touch screen and XM radio do not work.
If short to ground: Hard and touch buttons work OK.
(1) The shielded wires have a heat-shrunk 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 listed on the schematic.
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