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

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

Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

Terminal Number

Wire Color

Terminal Name

Description

Voltage (about)

Symptom

WHT/RED

+B (+B power source)

Continuous power source

Battery voltage

If open: Screen completely off (no backlight visible).
If short to ground: Blows fuse No. 7 (7.5 A) in the under-dash fuse/relay box.

YEL/RED

ACC (Accessory)

Power source for accessory

Battery voltage at ACC (I)

If open: Display and buttons do not work.
If short to ground: Blows fuse No 32 (7.5 A) in the under-dash fuse/relay box.

WHT

AUDIO BUS (+) (GA-NET)

Data bus (+) GA-Net

0-5 V pulses average 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. Navigation buttons and touch screen do not work.

LT GRN⁽¹⁾

AUDIO BUS (GA-NET) SH

Shield for No. 3, 13 terminals

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

YEL

NAVI SCTY 2

Security signal to rear screen

0 V

If open: If security system set, it will not trip when screen is removed.
If short to ground: The security system set, it will not trip when screen is removed.

WHT

R SIG (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

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).

BLK

GND (Ground)

Ground for display unit

0 V

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

RED/BLK

ILL (+) (Illumination positive)

Parking light on signal from dash and console lights

Battery voltage if lights on: otherwise 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.

RED

ILL (-)

Ground for illumination light

With full dash lights brightness, 0 V

If open. When brightness = "Auto", night mode for the display is inoperative when lights on.
If short to ground: No change to display.

BLU/RED

AUDIO BUS (-) (GA-NET)

Data bus (-) GA-Net

0-5 V pulses average 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 the navigation hard and touch buttons work OK.

GRN/BLK

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

Shield for display bus terminal No 5, 15

0 V

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

PUR

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

Data bus (-) GA-Net

0-5 V pulses average 2 5V 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 the navigation hard and touch buttons work OK.

GRN/WHT

SECURITY 5

Security signal from CD changer

0 V

If open: The security system set, it will not trip when screen is removed
If short to ground: If security system set, it will not trip when screen is removed

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.

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.

GRY

SIG SH GND (Shield signal)

Shield for No. 8, 9, 17, 18, 19 terminals

0 V

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

⁽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.