HKS3 V3.1 Wiring Diagram needed for 2015+Subaru WRX FA20 DIT
 

Hello Richard,

Is there a wiring diagram for the 2015+ WRX DIT ? I found the one for the HFS4 V3.1 but I want to be 100% sure the installation is correct.

Another shop used the HFS4 V3.1 diagram thats found online to install but I cannot get the system to self trigger. Its also showing a open circuit for the boost solenoid so I assume they're trying to use the DHB failsafe function.

Any help appreciated as usual.


Cheers

Re: HKS3 V3.1 Wiring Diagram needed for 2015+Subaru WRX FA20 DIT
 

Can you post the wiring diagram used, could be an outdated one. Here is the latest:


For more details go here:
https://forums.nasioc.com/forums/sho....php?t=2748962

Re: HKS3 V3.1 Wiring Diagram needed for 2015+Subaru WRX FA20 DIT
 

Thank you Richard. Here is the diagram that the shop who installed the system used.

https://goo.gl/photos/RR3p6rWtMt1Wr6cn6

As you can see its V1 and missing the very important lower section of the diagram compared to what you posted. I did see the HFS4 thread you linked to but I was unsure if it applied exactly to the HFS3 V3.1

The car is throwing a trouble code for the wastegate solenoid being unplugged.

the DR1 jumper was not installed and the prescaler jumpers were incorrectly configured. I went ahead and set those according to your posted diagram.

Please advise

Re: HKS3 V3.1 Wiring Diagram needed for 2015+Subaru WRX FA20 DIT
 

Also check the Rail pressure and MAP sensor wires, they have also been revised.