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Subaru Electronic Throttle Pinout

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Colours will vary by year but pins should be the same. Heres what it is on a 2005 Legacy

Pedal
1 LY +5v
2 R Signal Sub
3 GB +5v
4 L Ground
5 B Signal main
6 YG Ground

Throttle
1 W D4 Motor -
2 B D5 Motor +
3 LW Ground 
4 R C29 signal sub
5 P C16 +5v
6 W C18 signal main

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The ethrottle itself is certainly that because of the big black and white wires. I don't imagine the service manual would change half way through so the pedal is likely the same. (looking into the connector, clip at the top)

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There are definitely a few variations of pedal pinout depending on which pedal and model.

 

When i did mine I found a few online and none matched the STI Pedal I used ( same main plastic body but with a steel arm for the pedal ). And my pinout is different than listed above.

 

Best way to find out is to get a power supply or battery or similar and test it before hooking up to the ecu

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On 2/23/2018 at 9:58 PM, Stevieturbo said:

There are definitely a few variations of pedal pinout depending on which pedal and model.

 

When i did mine I found a few online and none matched the STI Pedal I used ( same main plastic body but with a steel arm for the pedal ). And my pinout is different than listed above.

 

Best way to find out is to get a power supply or battery or similar and test it before hooking up to the ecu

 

Can you please send me your Pinout. I have a same steel arm pedal. 

Thank you in advance. 

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Here is the pin-out I used.

Throttle body is off 2005 sti.. (note.. I had to switch pins aux9 and aux10 around since the plate was closing not opening.)

Throttle body Main An Volt 3 Pin 6 on connector Pin 18 on the ECU main circuit
Throttle body Sub An Volt 2 Pin 4 on connector Pin 29 on the ECU sub circuit
Throttle body   ECU +5V Pin 5 on connector Pin 16 on the ECU +5V
Throttle body   Sensor Ground Pin 3 on connector  
Throttle body Throttle Motor - Aux 9 Pin 1 on connector Pin 4 on the ECU
Throttle body Throttle Motor + Aux 10 Pin 2 on connector Pin 5 on the ECU

 

 

 

And here is the accelerator pedal.

Same thing .. off 2005 sti.

 

Accelerator Pedal          
Throttle pedal   Sensor Ground   Pin 6 on connector  
Throttle pedal Main     Pin 5 on connector Pin C17 on ECU
Throttle pedal Ground     Pin 4 on connector Pin C34 on ECU
Throttle pedal   ECU +5V   Pin 3 on connector Pin C15 on ECU
Throttle pedal Sub     Pin 2 on connector Pin C28 on ECU
Throttle pedal   ECU +5V   Pin 1 on connector  

 

Orange denotes shielded cable that I used.

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Not sure exactly which year although obviously it'd need to be 05-07 in the UK

Subaru pedal, metal arm....plastic/rubber pedal. So possibly not an STI pedal.

Looking into pedal, clip on top ( These were wiring colours on the plug that was cut from loom )
Left =1

1- Dark Blue = Signal
2- Orange = Sensor Ground
3-  Blue/Red = 5v
4- White/Blue = Signal
5- White/Red = Sensor Ground
6- Light Blue = 5v

Both are 0-5v tracks upwards

 

But with a 5v supply it's pretty easy to work through them and test yourself.

 

I did buy another pedal for a spare that I think came from a Legacy, different wire colours, same plug, and testing showed same pinouts.

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