Разъемы автомагнитол Lexus и Toyota  > Toyota pinouts
TOYOTA P1749, Pioneer ID P1749, KEX-M9137zt Toyota p/n 86120-60602

Head unit pinout abbreviations

Pin
Notation
Pin function

Power pins

BU, +B Battery+  (12V direct from Battery). 
GND, GROUND, SLD1 Chassis Ground
ACC Ignition powered. +12 V with the ignition key is in the ACC or ON position.
ILL Light-on signal or backlight adjustment. +12V supplied to light-on pin of head unit when tail lights ar turned on. May be used for backlight adjustment in some models.
ANT Power for Electric Antenna. Output +12 V (maximum 150 - 300mA) 

Audio pins

FR+ or RF+ Front right speaker out
FL+ or LF+ Front left speaker out
RR+ Rear right speaker out
LR+ or  RL+ Rear left speaker out
FR- or RF-, FL- or LF-, RR-, LR- or RL-, SGND The corresponding speaker ground

Misc. pins

MUTE This pin is used to silence the audio, earthed by some other external components that is connected to the radio.
Amp Amplifier control
RSR+.RSR-,RSL+, RSL- Audio Signal to Rear Audio Controller, For Wireless Headphones
TX+, TX- Display communication??
SW1 Seek+/-, Vol+/- Inputs from Steering wheel audio controls
SW2 Mode input from Steering wheel audio controls
RMU Mute Signal to Rear Audio Controller, Logical 1 when Radio Switch is On
20 pin Lexus/Toyota Head Unit proprietary of Toyota FX-MG9427ZT, FX-MG9527ZT, FX-MG9327ZT head units схематический вид разъема
Разъем 20 pin Lexus/Toyota Head Unit proprietary
12 pin Toyota/Lexus Head Unit proprietary of Toyota FX-MG9427ZT, FX-MG9527ZT, FX-MG9327ZT head units схематический вид разъема
Разъем 12 pin Toyota/Lexus Head Unit proprietary
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