Jump to content
SAU Community

What is this for?

Ethan1990gtst
 Share

Recommended Posts

Ethan1990gtst Newbie

Ethan1990gtst

Posted
Posted

Hi there I have a rb20det r32

Is anyone able shed some light please

I have a nistune chip in ecu no idea what tune is on it, for the loom going to the ecu they have cut 2 wires going to pin 16 and 17, they have added this little thing then put it to earth, any ideas? spacer.png

Link to comment
Share on other sites
GTSBoy Grand Master

GTSBoy

Posted
Posted

That little thing is a resistor.

What you say about it being involved in pins 16 & 17 is hard to reconcile with reality, as pin 16 is connected to the ECCS relay (which is the main relay that starts up and runs the ECU) and pin 17 does nothing.

If I were going to put a resistor anywhere on an ECU connector, it would be to fix a water temperature (which would be both a very bad idea, and be pin 28) or across the knock sensor (with a 500kohm resistor) to fake it out if it has been removed (also a bad idea, and would be on pin 23 or 24).

But those mods would be on the ECU side of the connector. Doing it in the loom side is tres weird.

Would you care to please show a photo and sketch of the damage?

Link to comment
Share on other sites
Ethan1990gtst Newbie

Ethan1990gtst

Posted
  • Author
Posted
32 minutes ago, GTSBoy said:

That little thing is a resistor.

What you say about it being involved in pins 16 & 17 is hard to reconcile with reality, as pin 16 is connected to the ECCS relay (which is the main relay that starts up and runs the ECU) and pin 17 does nothing.

If I were going to put a resistor anywhere on an ECU connector, it would be to fix a water temperature (which would be both a very bad idea, and be pin 28) or across the knock sensor (with a 500kohm resistor) to fake it out if it has been removed (also a bad idea, and would be on pin 23 or 24).

But those mods would be on the ECU side of the connector. Doing it in the loom side is tres weird.

Would you care to please show a photo and sketch of the damage?

Sorry it is pin 23 & 24, and yes it is on the ecu side

Link to comment
Share on other sites
GTSBoy Grand Master

GTSBoy

Posted
Posted

So there it is. It's probably a 470 kOhm resistor. 470k being a typically available size that is close enough to the ~500K resistance offered by the knock sensor. That stops the ECU from thinking that the knock sensor is absent, but doesn't otherwise do anything.

Link to comment
Share on other sites
  • 2 weeks later...
TurboTapin Proficient

TurboTapin

Posted
Posted
On 7/22/2024 at 2:39 AM, Ethan1990gtst said:

GTSBoy thanks heaps mate!

If you need the OEM RB20 knock sensors and knock sensor loom, let me know. I have them both laying around somewhere. 

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      R34 Gtr Instrument Cluster Into Gtt?

      By GTSBoy · Posted

      Sorry to sound thick....but what does the "faceplate" have to do with adjusting the odometer? Surely the odo stays put and you change the fascia. Surely they are not the same thing.
    • dhteam
      R33 Dash Vents

      By dhteam · Posted

      I know its been 13 years since this topic, but it came up when i was searching to fix my problem so thought i would add my 2cents in and how i fixed my issue.  my r33 had air coming out off all the vents except the center one. i went straight down the rabbit hole expecting it to be a mechanical issue, pulled the dash apart tracing lines, checking linkages etc. it turned out the very fine fly screen mesh behind the center vent was actually VERY blocked so when i had the air on face the air would take the path of least resistance and come out the 2 side vents but allow nothing out the center vent. a quick clean fixed the issue. once the mesh is clean you can see the air direction flaps moving inside through the mesh. 
    • colin.ssc
      Looking at getting a Tesla style Screen for my V37 Skyline.

      By colin.ssc · Posted

      Glad that worked out for you. I think my Joyeauto one is coming this week but I won't get to install it til closer to end of October. Will update when I get around to it. Just standard CP and nothing else. Hopefully the cameras all work without needing to get out of CP and get back in as they advertised. My other worry is sound quality. Fingers crossed!
    • GTSBoy
      AC Compressor

      By GTSBoy · Posted

      Yeah, it is possible. But like many related things (ie, alternators), it's getting harder to find anyone who does and will, given the change to just throwing shit away and replacing with new cheap shit from Chinese factories. If you want to pursue the option of rebuilding, you'll have to dig up an auto A/C specialist or three to find out whether they still do.
    • TobiGTT
      Newbie from Poland

      By TobiGTT · Posted

      There are a few, but not that many. Also, there are no such rules when it comes to importing, just taxes and paperwork in general. The only rule I can think of is excise tax, which is 3.1% for cars with an engine under 2 liters and 18.6% over. About mods coming to the car, I've already bought Tein Flex Z coilovers and TE37s S Plus in diamond dark gunmetal (front 8.5" x 18" +35, rear 9.5" x 18" +22). Rims will be here in March. When the car arrives, I'll probably do a custom turboback and some exterior mods. I will keep you updated on my progress here! :)
×
×
  • Create New...