Navigation Unit Inputs and Outputs for Connector A (20P)

Fig 1: Identifying Navigation Unit Connector A (20P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

NAVIGATION UNIT INPUTS AND OUTPUTS FOR CONNECTOR A (20P)

Terminal Number

Wire Color

Terminal Name

Description

Voltage (about)

Symptom

WHT

RSIG (Red signal)

Red color signal

0 2 V AC average in RGB color diagnostic mode

If open: Red color missing (see "RGB COLOR " diagnostic).
If short to ground: Red color missing (see "RGB COLOR " diagnostic).

RED

GSIG (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).

GRV⁽¹⁾

SIG 1 SHIELD GND (Shield signal)

Shield for No. 1, 2, 11, 12, 13 terminals

0 V

If open No change to display.
If short to ground: No change to display.

WHT/BLU

SI (A/C Signal input)

A/C input signal

0-battery voltage pulses

If open: Voice control does not work.
Will affect navi display dimming.
If short to ground: Voice control does not work.
Will affect navi display dimming.

RED/BLK

ILL (+) (Illumination positive)

Parking light on signal from dash and console lights, under-hood "Relay fuse box"

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 7 in under-dash fuse/ relay box.

GRN/BLK⁽¹⁾

ECU BUS (GA-NET) SHIELD GND (Shield display bus)

Shield for display bus terminal No. 10, 20

0 V

If open: No change to display.
If short to ground" No change to display.

LT GRN

ECU BUS (+) (GA-NET) (Display bus positive)

Data bus (+) GA-Net

0-5 V pulses average 2.5 V depends on bus traffic

If open: Navigation buttons and touch screen do not work.
If short to ground- Navigation buttons XM radio, CD changer, and touch screen do not work.

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).

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.

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

WHT/RED

SO (A/C Signal output)

A/C output signal

0-battery voltage pulses

If open: A/C voice control does not work.
Will affect navi display dimming
If short to ground A/C voice control does not work.
Will affect navi display dimming.

WHT/BLK

CLK (A/C Clock signal)

Time set sync signal

0-battery voltage pulses

If open: A/C voice control does not work.
Will affect navi display dimming.
If short to ground A/C voice control does not work.

PUR

ECU BUS (-) (GA-NET) (Display bus negative)

Data bus (-) GA-Net

0-5 V pulses nominally 2.5 V (depends on BUS traffic)

If open XM radio, Navigation buttons and touch screen do not work.
If short to ground XM radio, CD changer, and Navigation 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.