Audio-Navigation Unit Inputs and Outputs: Overview

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Audio-Navigation Unit A (24P) Connector Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Audio-Navigation Unit Connector A (24P)

CONNECTOR TERMINALS REFERENCE CHART

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	WHT	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.
12	BLK	MAIN GND (Ground)	Ground for audio-navigation unit	0 V	If open: No change to display. If short to ground: No change to display.
13	GRY	ILL (+) (Illumination positive)	Parking light on signal from dash and console lights	Light 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. 29 (10 A) in under-dash fuse/relay box.
15	BLU	VSP (Vehicle speed pulse)	Vehicle speed pulse signal from PCM	Pulses 0-5 V: Average 2.5 V, when moving	If open: No vehicle speed pulses. Diagnostic screen Car Status, VSP Navi = 0. If short to ground: No vehicle speed pulses. Diagnostic screen Car Status, VSP Navi = 0.
24	PNK	+B BACK UP (+B power source)	Continuous power source	Battery voltage	If open: Screen completely off (no backlight visible). If short to ground: Blows fuse No. 1 (15 A) in the under-dash fuse/relay box.