Subaru STi to HFS-3 wiring diagrams (2004-2013)

[Richard L]

You might be able to match one of the ECUs on first page. Do a compare.

[madvally]

Hi guys, I'm fitting a HFS3 system to a 2015 STi (new shape).

Has anyone done one yet - I need to confirm ECU pinouts for this model.

Thanks.

[Richard L]

Post a picture of the ECU so I can compare the wiring colours.

[arthurtoo]

Hi Richard,

May i have the hsf3 ecu wiring diagram for a 06 subaru wrx sti jdm ecu.

My car is a 2006 subaru wrx sti s204.

Thank you.

[Richard L]

If you can take a picture of the ECU with pins exposed, I can make a new drawing. I must identify thje ECU first.

[Lexsed]

Do you have ECU out diagram for 2005 SG5 Forester EUDM model?

[Richard L]

Can you take a picture of the unplugged ECU. This will help me identifying the ECU.

[gypo4life86]

Originally Posted by Richard L

Post a picture of the ECU so I can compare the wiring colours.

Richard L, I have an ADM 2015 WRX FA20DIT & need to install my failsafe kit.
If I take a pic of the ECU pins, that would help? oh one more thing, when I disconnect the harness from the ECU to expose pins...do I need to disconnect battery terminals or anything? sorry never done this before cheers

[Richard L]

No need to disconnect the battery, but ignition off.

More details here:
https://forums.nasioc.com/forums/sho...light=aquamist

Richard

[13WRXAddict]

I have a factory service manual for my 2013 WRX. I am having issues finding a break down of the wiring connectors for the ECU. There is however pictures of the pins of the 4 connectors and they seem to match the 2013 STI. Do you know if the 2013 STI wiring diagram here will work for the 2013 WRX? I will be purchasing the HFS-3 soon to install in this car. Any info would be greatly appreciated, thank you!

-Rick