AUDIO AND VISUAL SYSTEM (for Radio and Display Type) TERMINALS OF ECU

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specification
R23-1 (FR+) - R23-7 (GND)	LG - BR	Sound signal (Front Right)	Audio system playing	Waveform synchronized with sound is output
R23-2 (FL+) - R23-7 (GND)	P - BR	Sound signal (Front Left)	Audio system playing	Waveform synchronized with sound is output
R23-3 (ACC) - R23-7 (GND)	GR - BR	Accessory (ON)	Ignition switch off	Below 1 V
R23-3 (ACC) - R23-7 (GND)	GR - BR	Accessory (ON)	Ignition switch ACC	11 to 14 V
R23-4 (B) - R23-7 (GND)	L-Y - BR	Battery	Always	11 to 14 V
R23-5 (FR-) - R23-7 (GND)	L - BR	Sound signal (Front Right)	Audio system playing	Waveform synchronized with sound is output
R23-6 (FL-) - R23-7 (GND)	V - BR	Sound signal (Front Left)	Audio system playing	Waveform synchronized with sound is output
R23-7 (GND) - Body ground	BR - Body ground	Ground	Always	Below 1 V
R23-10 (ILL+) - R23-7 (GND)	G - BR	Illumination signal	Light control switch off	Below 1 V
R23-10 (ILL+) - R23-7 (GND)	G - BR	Illumination signal	Light control switch tail or head	11 to 14 V
R22-1 (RR+) - R23-7 (GND)	R - BR	Sound signal (Rear Right)	Audio system playing	Waveform synchronized with sound is output
R22-2 (RL+) - R23-7 (GND)	B - BR	Sound signal (Rear Left)	Audio system playing	Waveform synchronized with sound is output
R22-3 (RR-) - R23-7 (GND)	W - BR	Sound signal (Rear Right)	Audio system playing	Waveform synchronized with sound is output
R22-6 (RL-) - R23-7 (GND)	Y - BR	Sound signal (Rear Left)	Audio system playing	Waveform synchronized with sound is output
R21-4 (MACC) - Body ground	B - Body ground	Microphone AMP power supply	Ignition switch off	Below 1 V
R21-4 (MACC) - Body ground	B - Body ground	Microphone AMP power supply	Ignition switch ACC	4 to 6 V
R21-5 (MIN+) - Body ground	W - Body ground	Microphone voice signal	See "Microphone & Voice Recognition Check" Click here	-
R21-6 (SNS2) - Body ground	W-B - Body ground	Microphone connection detection signal	Always	Below 1 V
R21-11 (AGND) - Body ground	Shielded - Body ground	Shield ground	Always	Below 1 V
R21-17 (SPD) - R23-7 (GND)	V-R - BR	Speed signal from combination meter	See "Vehicle Signal" Click here.	-
R21-18 (SGND) - R23-7 (GND)	Shielded - BR	Shield ground	Always	Below 1 V
R21-19 (MIN-) - Body ground	R - Body ground	Microphone voice signal	See "Microphone & Voice Recognition Check" Click here	-
R21-21 (SW1) - R23-7 (GND)*	R - BR	Steering pad switch signal	Steering pad switch not operated	4.44 to 5.43 V
			Seek+ switch pushed	0.45 to 0.65 V
			Seek- switch pushed	1.19 to 1.49 V
			Volume+ switch pushed	2.09 to 2.54 V
			Volume- switch pushed	3.20 to 3.88 V
R21-22 (SW2) - R23-7 (GND)*	W - BR	Steering pad switch signal	Steering pad switch not operated	4.44 to 5.43 V
			MODE switch pushed	0.45 to 0.65 V
			On hook switch pushed	1.19 to 1.49 V
			Off hook switch pushed	2.09 to 2.54 V
R21-23 (SWG) - R23-7 (GND)*	L - BR	Steering pad switch ground	Always	Below 1 V
R21-25 (ADPG) - R23-7 (GND)	G - BR	External device connection detection signal	External device connected	Below 1 V
R21-26 (VAR+) - R23-7 (GND)	B - BR	Sound signal (Right)	External device playing (When stereo jack used)	Waveform synchronized with sound is output
R21-27 (VA-) - R23-7 (GND)	W - BR	Ground	Always	Below 1 V
R21-28 (VAL+) - R23-7 (GND)	R - BR	Sound signal (Left)	External device playing (When stereo jack used)	Waveform synchronized with sound is output
R18-6 (PKB) - R23-7 (GND)	LG - BR	Parking brake signal	See "Vehicle Signal" Click here.	-
RA-5 (ANT+) - Body ground	# - Body ground	Power source of antenna	Radio switch on and AM or FM radio on	11 to 14 V
R24-1 (USV1) - R24-4 (UGD1)	# - #	Battery	Always	4.5 to 5.5 V
R24-2 (US1-) - R24-4 (UGD1)	# - #	Data signal	USB device or "iPod" connected	-
R24-3 (US1+) - R24-4 (UGD1)	# - #	Data signal	USB device or "iPod" connected	-
R24-4 (UGD1) - Body ground	# - Body ground	Ground	Always	Below 1 V

#: There is no wire color information.
*: w/ Steering Pad Switch