Menu

2002 Miata: No CEL when key is in on position. No start; but crank.

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 2002 Miata: No CEL when key is in on position. No start; but crank.

  • Creator
    Topic
  • #889298
    DaveDave
    Participant

      Hey guys.

      The car just stopped running as I turned into a parking lot last night.

      When the key is turned to the on position, everything lights up but the CEL. A scantool cannot connect to the PCM.
      The engine does crank. The timing belt isn’t broken -the cam turns when cranking.

      There’s gas in the tank.
      No fuses blown.
      The ignition relay was just changed: I broke it when I was trying to test it. :blush:

      When I connect a scantool, it cannot connect.

      My next step is to see if there’s voltage going to the PCM.

      This is not looking good for the PCM.

    Viewing 7 replies - 1 through 7 (of 7 total)
    • Author
      Replies
    • #889303
      Nightflyr *Richard Kirshy
      Participant

        I understand the circumstances that led you to this point.
        My question is this ..
        Do you know if your vehicle has a CAN BUS network and if so is it functioning?

        #889305
        DaveDave
        Participant

          No. It will not connect to any scantool. And I’m in the process of finding out why…

          #889307
          Nightflyr *Richard Kirshy
          Participant

            I believe you misunderstand me sir.
            In order to test the CAN BUS you need a break out box, something like the one below.

            In order to see what exactly is occurring on the network.

            #889323
            DaveDave
            Participant

              No, I have no such thing. I was gonna test the socket with a multimeter.

              #889324
              Nightflyr *Richard Kirshy
              Participant

                Good Luck

                #889330
                DaveDave
                Participant

                  FYI, I checked the OBDII socket under the dash.

                  Getting 12v on pin 16.

                  very low voltage on pins 4&5&7 Pin #7 should have 3.5volts.

                  Resistance: low on 4&5 and nothing registering on pin 7 – the K-line.

                  To recap:

                  I did this because my CEL doesn’t come on (bulb OK) and car cranks but doesn’t start.

                  While driving my car just out of the blue it stopped running – like if it stalled.

                  #889347
                  DaveDave
                  Participant

                    This will be the last internal combustion engine car I’ll ever have – hopefully.

                    Overly complicated 19th century crap.

                  Viewing 7 replies - 1 through 7 (of 7 total)
                  • You must be logged in to reply to this topic.
                  Loading…
                  toto togel situs toto situs toto