Audio-HVAC Subdisplay Unit Inputs and Outputs for 10P Connector

Fig 1: Identifying Audio-HVAC Subdisplay Unit Inputs And Outputs For 10P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

CONNECTOR TERMINAL REFERENCE CHART

Terminal Number

Wire Color

Terminal Name

Description

Voltage (about)

Symptom

BLK

GND (G503)

Ground for audio-HVAC subdisplay unit

0 V

If open: Audio-HVAC subdisplay unit unaffected
If short to ground: Audio-HVAC subdisplay unit unaffected.

BLU/ORN

SD+B

Power source for audio-HVAC subdisplay unit

If open: All Audio-HVAC subdisplay unit LCD segments do not work.
If short to ground: All Audio-HVAC subdisplay unit LCD segments do not work. Audio-HVAC subdisplay unit backlight on.

YEL/RED

INH

Time set sync signal

0.06 V

If open: Clock Audio-HVAC subdisplay unit will not set to navigation time (when time offset is applied or when "Reset" touched in Setup "Clock Adjustment" screen).
If short to ground: All Audio-HVAC subdisplay unit LCD segments do not work display backlight on.

YEL

Time information signal

0-5 V Data
2.5 V Average

If open: Audio-HVAC subdisplay unit randomly displays some characters, display backlight on.
If short to ground: Audio-HVAC subdisplay unit randomly displayed characters, display backlight on.

BLU/RED

Communication signal

0-5 V Data
11 V Average

If open: All Audio-HVAC subdisplay unit LCD segments do not work, backlight on.
If short to ground: All Audio-HVAC subdisplay unit LCD segments do not work, backlight on.

BLU

Communication signal

0-5 V Data
6-7 V Average

If open: All Audio-HVAC subdisplay unit LCD segments do not work, backlight on.
If short to ground: All Audio-HVAC subdisplay unit LCD segments do not work, backlight on.

BRN/BLK⁽¹⁾

SH GND

Shield for terminal No. 4, 5, 6, 7

0 V

If open: No effect on Audio-HVAC subdisplay unit.
If short to ground: No effect on Audio-HVAC subdisplay unit.

ORN

LCD BL (-) (LCD backlight-)

Power for LCD backlight-

0-0.2 V

If open: Audio-HVAC subdisplay unit functions normally, but display is very dim.
If short to ground: Audio-HVAC subdisplay unit functions normally.

PUR

LCD BL (+) (LCD backlight +)

Power for LCD backlight +

9.5 V

If open: Audio-HVAC subdisplay unit completely blank.
If short to ground: Audio-HVAC subdisplay unit completely blank.

⁽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.