Jump to content
SAU Community

Is my check engine light working.

CanadianRB280z
 Share

Recommended Posts

CanadianRB280z Rookie

CanadianRB280z

Posted
Posted

So I've been serching the forum for a thread on how to test if the check engine light IS working.

Some back ground, I have a engine harness from wiring specialty for a S14 chassis from the previous owner, the R33 RB25DET S2 is going in to my 280Z but I can't seem to find a connection off the harness for the check engine light, the wire is there but I'm not sure where they (wiring specialty) terminated it.  I also installed a DZ-START that has a Nissan maximum push button start. So off/acc/start.

So going off the pin out for the stock ECU that I have, it shows pin 32 so I spliced into that wire with an LED and grounded it. (Note: wire color indicates Orange/black but wire is only orange)

Now the problem, maybe. When I start the car the check engine light comes on but for a split second, not as long as most cars do. (If you're not paying attention you will miss the light thats how fast it is)

So to the point, is there a way that I can test to see if the check engine light is working correctly. (Yes the light itself works) or is a LED not the right choice or do I need a capacitor to prolong the light?

Thanks

Link to comment
https://www.sau.com.au/forums/topic/480043-is-my-check-engine-light-working/
Share on other sites
MoMnDadGTR Mentor

MoMnDadGTR

Posted
Posted

hmmmm, have a look in the r32 gts manual and see if you can find something in the wiring. I know for my r32 gtr rb26dett I have the bnr32 manual and everything for wiring from what ever is in there. might be able to get some info there...any pictures of the splicing would help too...I know to check engine codes on a gtr you just need a paper clip and theres a spot in the fuse area you just arc. but I know your not checking codes but this may be a way to check to see if its working as well, may be different for rb25 tho..

GTSBoy Grand Master

GTSBoy

Posted
Posted

Take the dash out, check the globe directly.

Then power the globe from the terminals on the loom plug on the dash.

That will tell you if it's all good up at the dash, or not. And there is little chance of it being broken anywhere else, unless some twatbasket has cut the wire at the ECU.

CanadianRB280z Rookie

CanadianRB280z

Posted
  • Author
Posted

This engine is in a Datsun 280Z so I dont have a dash loom, just the engine loom and no R33 fuse box. Yes I have a fuse box from EZ-WIRE and have spliced in the specially wire loom. I'm going to wire a capacitor on the LED to see if it stays on longer during cranking. 

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

    • Kinkstaah
      Strange issue RB25DET wont start

      By Kinkstaah · Posted

      I've seen similar actually in my situation. You never know what tables are attempted to be used when the car thinks it's -99C or +200C. The fail state is not usually that extreme but you know what I mean - it was in my case though! This is where being able to read all the sensors is useful cause you see this stuff really quickly.
    • Kinkstaah
      First time Skyline owner

      By Kinkstaah · Posted

      The above is very important. However as long as you keep timing relatively low, it's plausible to make your own knock ears and plausible to learn to tune with a modern ECU that can do wideband O2 correction like a boost controller. I mean if you only have one viable road to even drive the car on, learning to tinker to this level may be worth doing given you can't do much else with the car...?
    • Kinkstaah
      Chris' Toyota Mark ii JZX110

      By Kinkstaah · Posted

      I find the fact that the rear plate has to be bent inwards at the rear not so bad: but the front is just awful: It's like come on. (these are my very old, now retired/turned in plates) TBH it is a lot of money to fix a minor issue, the fact I said "I'll never really spend the money on doing this" is why people ended up buying them as a gift for a 'car guy' who can be hard to shop for.. for car guy things.
    • GTSBoy
      Chris' Toyota Mark ii JZX110

      By GTSBoy · Posted

      I just bent the ends of my premo plates. It even went through Regency like that after the engine conversion and the inspector (a great bloke!) just squinted his eyes and said "I didn't see that". Plates, and how they look, are just something that have zero importance to me.
    • GTSBoy
      Strange issue RB25DET wont start

      By GTSBoy · Posted

      Yeah, I would have said the same. It makes me suggest that there are other things wrong, such that the ECU is totally unhappy with the broken sensor. The only other thought here is that maybe it is shorted, which might cause a different issue to the typical "disconnected" sensor.
×
×
  • Create New...