How To: VTCS Delete Relay

Discussion in 'Mazdaspeed 6 How-To' started by bdubs802, Mar 11, 2024.

Watchers:
6 users.
  1. bdubs802

    bdubs802 Greenie N00B Member

    Joined:
    Feb 26, 2024
    Posts:
    3
    Trophy Points:
    3
    Location:
    Illinois
    Ratings:
    +3 / -0
    I don't believe this has been posted here yet, not that I've found at least. The only information is scattered and not very clear so I felt like more detailed pictures might help with a step by step. This relay should be clear any codes related to VTCS allowing you to remove the plunger and solenoid.
    Required parts:
    I used a Voxx 8617 relay from best buy (8616 should work as well) and a 1 A diode
    Soldering iron/solder
    spade terminals both male and female

    1. Cut off brown lead of the relay, this is not needed.
    IMG_20240303_215117027.jpg
    [​IMG]
    2. Crimp your spade terminals to the red and black wires, I put the female ends on here.
    IMG_20240303_215132328.jpg
    [​IMG]
    3. I then took cut a small opening in the wire insulation on the red wire to expose the copper. Solder the diode on to the wire like this. Polarity matters so pay attention.
    IMG_20240303_215146595.jpg

    [​IMG] [​IMG]
    4. Do the same for the black wire.
    IMG_20240303_215505771.jpg
    [​IMG]
    5. Heat shrink or wrap with electrical tape.
    6. Cut the plug off of the plunger that senses if the valves are open or not. (not the one from the harness leave that on the car.)
    7. Solder that plug onto the orange and yellow wires from the relay, polarity does not matter. Heat shrink or electrical tape again.
    IMG_20240303_231628220.jpg
    [​IMG]
    8. Now go to the car and cut this plug off, this is the plug that goes into the VTCS solenoid, the black box on the intake manifold.
    IMG_20240303_215745290_HDR.jpg
    [​IMG]
    9. Put your male spade terminals onto these wires
    IMG_20240303_231829541.jpg
    [​IMG]
    10. Now plug everything in:
    Red wire from relay -> Green wire on harness going to solenoid
    Black wire from relay -> Black wire on harness going to solenoid
    Orange and yellow should just plug straight into the matching plug where the plunger originally went

    I've had this for a few hundred miles and the light has not come on once. Just tuck everything out of the way and you should be good to go.
     

    Attached Files:

    Last edited: Mar 11, 2024
    • Like Like x 3
  2. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

    Joined:
    Feb 11, 2016
    Posts:
    3,327
    Trophy Points:
    113
    Location:
    Earth
    Ratings:
    +3,618 / -19
    Thanks for the write-up bt the pictures aren't showing. Upload them to this website
     
    Easter Bunny, via a mobile device, Mar 11, 2024
    #2
    • Like Like x 1
  3. Awafrican

    Awafrican Moderator Gold Member

    Joined:
    Feb 11, 2016
    Posts:
    3,634
    Trophy Points:
    113
    Location:
    Canada
    Ratings:
    +2,898 / -11
    Thanks for putting this together, as bunny said please upload pictures directly here using the upload file you can then insert them online as full pic or thumbnail.
     
    Awafrican, via a mobile device, Mar 11, 2024
    #3
    • Like Like x 1
  4. Rokusek

    Rokusek Are you my dad? Motorhead Platinum Member

    Joined:
    Feb 10, 2016
    Posts:
    681
    Trophy Points:
    93
    Location:
    MIssoula, MT
    Ratings:
    +861 / -0
    Same same.

    Good deal though.
     
    Rokusek, via a mobile device, Mar 11, 2024
    #4
  5. Mtnbker3531

    Mtnbker3531 Platinum Member

    Joined:
    Aug 19, 2020
    Posts:
    338
    Trophy Points:
    63
    Location:
    Chicago
    Ratings:
    +325 / -0
    For sure interested in this as I plan to move to the Corksport intake mani and still need to pass emissions here in IL.
     
    • Like Like x 1
  6. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

    Joined:
    Feb 11, 2016
    Posts:
    3,327
    Trophy Points:
    113
    Location:
    Earth
    Ratings:
    +3,618 / -19
    Just leave the black box plugged in and zip ties out of the way
     
    Easter Bunny, via a mobile device, Mar 11, 2024
    #6
    • Like Like x 2
  7. Mtnbker3531

    Mtnbker3531 Platinum Member

    Joined:
    Aug 19, 2020
    Posts:
    338
    Trophy Points:
    63
    Location:
    Chicago
    Ratings:
    +325 / -0
    I am not against this solution either. I want whatever works the best and is most reliable.
     
    • Like Like x 1
  8. bdubs802

    bdubs802 Greenie N00B Member

    Joined:
    Feb 26, 2024
    Posts:
    3
    Trophy Points:
    3
    Location:
    Illinois
    Ratings:
    +3 / -0
    Oops sorry first post here. I had a feeling that wasn't quite right, should be fixed now though.

    I ended up breaking mine which is why I went this route, also a little cleaner solution since the relay is much smaller. I've run it for a few hundred miles now with no problems.
     
    Last edited by a moderator: Mar 11, 2024
  9. Awafrican

    Awafrican Moderator Gold Member

    Joined:
    Feb 11, 2016
    Posts:
    3,634
    Trophy Points:
    113
    Location:
    Canada
    Ratings:
    +2,898 / -11
    Looks like pics are working now cheers dude
     
    Awafrican, via a mobile device, Mar 11, 2024
    #9
Loading...

Share This Page

Users Viewing Thread (Users: 0, Guests: 0)