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20 pin Toyota Head Unit audio connector layout
Разъем 20 pin Toyota Head Unit audio
p/n 86120-0E250

 

20 pin Main Audio

Pin
Number
Pin Function Details wire color
1 B Battery Always 11 to 14 V B
2 ILL+ Illumination signal Light control switch ON 11 to 14 V, OFF <1V G
5 ATX+ AVC-LAN communication signal Y
7 MUTE MUTE signal switched below 1V V
8 R+ Sound signal (Right)   R
9 L+ Sound signal (Left)   B
10 SLD Body ground Shield ground Always Below 1 V  
11 ACC Accessory (ON) Ignition switch on(ACC) 11 to 14 V GR
12 ILL- Illumination (rheostat) signal Light control switch OFF Below 1 V W
13 ANT Power source of antenna Radio switch ON and AM or FM -> 11 to 14V B
15 ATX- AVC-LAN communication signal  
18 R- Sound signal (Right)   G
19 L- Sound signal (Left)   W
20 GND Ground Body ground BR

 

20 pin Misc connector

Pin
Number
Pin Function Details wire color
6 SWG Steering pad switch ground   B
7 SW1 Steering pad switch signal N/A >=4V
SEEK+ = 0.5 V
SEEK- = 0.9V
VOL+ = 2.0V
VOL-  = 3.4 V
O
8 SW2 Steering pad switch signal N/A >=4V
MODE = 0.5V
ON HOOK = 0.9V
OFF HOOK  = 2.0V
V
11 IVO+ Voice signal Bluetooth handsfree L
12 IVO- Voice signal Bluetooth handsfree P
13 Shield Shield Ground    
15 ARI Sound signal (Right) External device (When stereo jack is used) R
16 ASGN Shield Ground   W
17 ALI Sound signal (Left) External device (When stereo jack is used) B
18 AGND Body ground    
19 AUX1 External device connection detection signal   Y

 

Pin
Number
Pin Function Details wire color
1 MIC- Microphone voice signal Bluetooth handsfree G
2 MIC+ R
3 TSW- Ground   Y
5 +B Battery   B
6 MGND Microphone amplifier power supply Ground   Y
7 MCVD+ Microphone amplifier power supply 4 to 6 V  
14 GND Ground   W-B
16 ACC Accessory (ON) Ignition switch on (ACC) => 11 to 14 V GR

 

Pin
Number
Pin Function Details wire color
1 CSLD Shield Ground    
2 CDR+ RSE Sound Signal (only w/ Rear Seat Entertainment System)   BR
3 CDR-   SB
4 CDL+   LG
5 CDL-   P
6 MUTE   RSE system is playing => Above 3.5 V
RSE system ischanging mode => Below 1 V
B
9 TXM+ AVC-LAN communication signal   Y
10 TXM-   BR

20 pin Toyota/Lexus Head Unit accesory proprietary connector layout
Разъем 20 pin Toyota/Lexus Head Unit accesory proprietary
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