Audio-HVAC Subdisplay Inputs and Outputs for 10P Connector

WARNING: This page is about a different car, the 2005 Acura TSX and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.

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

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	BLK	GND SIG		0 V	If open: Audio-HVAC subdisplay visible, but very dim. If short to ground: Audio-HVAC subdisplay unaffected.
2	BLU/ORN	5 V		5 V	If open: All Audio-HVAC subdisplay segments show briefly at key on. If short to ground: All Audio-HVAC subdisplay LCD segments do not work Audio-HVAC subdisplay backlight on.
3	BLK	GND	Ground (G503)	0 V
4	YEL/RED	RESET	Time set sync signal	5 V	If open: Clock Audio-HVAC subdisplay 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 LCD segments do not work display backlight on.
5	YEL	CLOCK		0-5 V Data 0.04 V Average	If open: Audio-HVAC subdisplay randomly displays some characters, display backlight on. If short to ground: Audio-HVAC subdisplay randomly displayed characters, display backlight on.
6	BLU/RED	DATA		0-5 V Data 4-6 V Average	If open: All Audio-HVAC subdisplay LCD segments on, backlight on. If short to ground: All Audio-HVAC subdisplay LCD segments on, backlight on.
7	BLU	CE		0-5 V Data 4-6 V Average	If open: All Audio-HVAC subdisplay LCD segments on, backlight on. If short to ground: All Audio-HVAC subdisplay LCD segments on. backlight on.
8	GRY	SH SIG	Shield for terminal No. 4, 5, 6, 7	0 V	If open: No effect on Audio-HVAC subdisplay. If short to ground: No effect on Audio-HVAC subdisplay.
9	RED	LCD BL- (LCD backlight-)	Power for LCD backlight-	0-0.2 V	If open: Audio-HVAC subdisplay function normal, but display is very dim. If short to ground: Audio-HVAC subdisplay functions normally.
10	GRN	LCD BL+ (LCD backlight +)	Power for LCD backlight +	9.5 V	If open: Audio-HVAC subdisplay completely blank. If short to ground: Audio-HVAC subdisplay completely blank.