Pinouts >  Lexus and Toyota Car Audio Head units harness  >  Toyota pinouts
p/n 86120-35240
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5-Pin Sensor signals Gray Connector

Part number of connector is 90980-11909, p/n of plug is 90980-11920

Pin Function  
1 PKB Parking Break. This signal is grounded when parking break switch is closed. Floats otherwise (Input)
2 n/c  
3 SPD Generated from the Speedometer. Most likely this is the Vehicle speed sensor pulse line (Input)
4 Test? Not Connected
5 REV Reverse Signal. This signal is tied to +12v when the car is in reverse (Input)

10-Pin Video & Communications Black Connector

Part number of connector is 90980-11922, p/n of plug is 90980-11923

Pin Function Details
1 VR Grounded when Ignition Switch is Off
2 R Red VGA (Input)
3 B Blue VGA (Input)
5 TX+ AVC-LAN 
6 VG Ground
7 G Green VGA (Input)
8 SYNC Probably VSync
10 TX- AVC-LAN 

 6-Pin  DVD Changer Video Blue Connector

Part number of connector is 90980-12209

Pin Function Details
1 TX+ Transmission+
3 NTSC Input
4 TX- Transmission-
5 SLD Shield/Ground for 3 & 6
6 SGND Signal Ground

4-Pin Reverse Camera Video and Power Connector

Part number of connector is 90980-12211

Pin Function Details
1 V+ Positive Voltage Terminal??
Referred to as B-Eye on Schematics,
Probably a composite video signal
2 CA+ Output, Camera power?
3 V-

Negative Voltage Terminal
Referred to as B-Eye-In on Schematics,
probably a composite video signal

4 GND Ground

 20-Pin Power, Audio Outputs Connector

Part number of connector is , p/n of plug is 

Pin Function Details
1 BU+B Battery +12V (IN)
2 ILL+B Light Control Switch On +12V (IN)
3 AMP+B (??)  
5 TX+ Transmission+ (I/O)
7 Mute Radio Switch is On = Logical 1
8 R+ Right Audio Out Positive
9 L+ Left Audio Out Positive
10 SLD Common Ground For Audio Signals
11 ACC+B +12V when key is in ACC/AUX/ON position
12 ILL Light Control Switch On +12V
13 ANT+B +12V Power to Antenna Amplifier when Radio Switch is On
15 TX- Transmission-
18 R- Right Audio Out Negative
19 L- Left Audio Out Negative
20 GND Ground

12-Pin Rear audio controller, DVD Changer Audio Connector

Pin Function Details
1 SLD Shield/Ground
2 R+ Right Audio Input Positive
3 R- Right Audio Input Negative
4 L+ Left Audio Input Positive
5 L- Left Audio Input Negative
6 Mute Logical 1 when Radio Switch is On
7 GND Ground
9 TX+ Transmission+
10 TX- Transmission-
11 ACC+B +12V when key is in ACC/AUX position
12 BU+B Battery +12V

20-Pin Rear Controller Audio, Steering Wheel Controls Connector

Part number of connector is 90980-12259

Pin Function Details
4 CMP+ (??)  
5 CMP- (??)  
6 GND Ground from Steering wheel audio controls
7 SW1 Seek+/-, Vol+/- Inputs from Steering wheel audio controls (IN)
8 SW2 Mode input from Steering wheel audio controls (IN)
9 TX1+ Transmission1+
10 TX1- Transmission1-
11 SLD1 Shield/Ground
15 RSR+ Audio Signal to Rear Audio Controller, For Wireless Headphones
16 RSR- Audio Signal to Rear Audio Controller, For Wireless Headphone
17 RSL+ Audio Signal to Rear Audio Controller, For Wireless Headphones
18 RSL- Audio Signal to Rear Audio Controller, For Wireless Headphones
19 RMU Mute Signal to Rear Audio Controller, Logical 1 when Radio Switch is On
20 pin Lexus/Toyota Head Unit proprietary of Toyota 4Runner (2003-2005) Head Unit connector layout
20 pin Lexus/Toyota Head Unit proprietary connector
20 pin Lexus/Toyota Head Unit accesory proprietary of Toyota 4Runner (2003-2005) Head Unit connector layout
20 pin Lexus/Toyota Head Unit accesory proprietary connector
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