Announcement

Collapse
No announcement yet.

CEL not working

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    CEL not working

    Hey guys, I've been driving my s52 obd2 swap for a bit and I've noticed the CEL does not work. I had the harness wired for me and a trm flash, what am I missing for my cel to get it working again? I know it worked prior to swap and I've hooked up a obd2 diagnostics and I have errors that should trigger the cel

    Thanks

    91 Alpinweiss2 318is OBD2 S52
    Tags: None
    #2
    This one might be a little too obvious but did you check the bulb?

    Comment

      #3
      Did you get the harness from Markert Motorworks?

      Comment

        #4
        Originally posted by RobertK View Post
        Did you get the harness from Markert Motorworks?
        yes i did

        91 Alpinweiss2 318is OBD2 S52

        Comment

          #5
          Had a similar issue with an OBD2 harness I got for netchsk's S52 swap.

          There should be 2 wires. One of those is supposed to be getting switched 12v+ and the other goes to pin #20 on your X6000 ECU connector.

          The check engine light is set off by the ECU by switching ground on and off to the bulb. You can check to be sure that pin 20 is working by using a continuity tester and switching the ignition into the run position. The light in the continuity tester should turn on and off with the ignition as the ECU gets power (the initial test CEL before you start the car).

          Test the other wire going to the bulb with a circuit tester and be sure you are getting 12v+ from when you switch the ignition on. If its not then you will need to splice that into another switched 12v+ source. Where you get the 12v+ is not really that important as long as its switched on by the ignition.

          Comment

            #6
            Originally posted by RobertK View Post
            Where you get the 12v+ is not really that important as long as its switched on by the ignition.
            Thanks for the help man, gonna go ahead and try that! Where would you get the 12v from?

            91 Alpinweiss2 318is OBD2 S52

            Comment

              #7
              Robert he has a 91, the 12v signal for the cel is routed through the body harness. I don't add it like I have to do on early cars.

              Check Us out on Facebook
              Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
              Full Product Line Tuning
              OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

              Comment

                #8
                Just glanced at the diagrams on my phone, check fuse 10, that's where the +12 signal comes from

                Check Us out on Facebook
                Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
                Full Product Line Tuning
                OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

                Comment

                  #9
                  Originally posted by 328ijunkie View Post
                  Robert he has a 91, the 12v signal for the cel is routed through the body harness. I don't add it like I have to do on early cars.
                  Gotcha, I figured it would be a 12v signal rather than the ECU signal.

                  Comment

                  Previous template Next
                  Working...
                  X