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ECT sensor - H22 swap

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    #16
    Originally posted by GhostAccord View Post
    3.6v from the ECU is not what you want. You want to see 5v at both the sensor and the ECU on the (+) wire. Sorry I left that out!

    You need to back probe the ECU @ pins D13 (+5v) & D22 (-).

    I probed wires d13 and d22, key on, right behind the ecu clip. 3.6volts is what its showing.

    Comment

      #17
      Should be approx. 5v... I don't consider 3.6v as approx 5v..... Do you know anyone with another ECU you can try?
      MR Thread
      GhostAccord 2.4L Blog

      by Chappy, on Flickr

      Comment

        #18
        To ensure Ive done this right - I probed d13 with the positive probe and d22 with the negative and got the 3.6. Just want to make sure I wasnt supposed to ground to chassis or something when checking the +5v.

        Im trying to source a p13 locally as we speak. Hopefully I can track one down.

        Comment

          #19
          Originally posted by SilkyCB View Post
          To ensure Ive done this right - I probed d13 with the positive probe and d22 with the negative and got the 3.6.
          That is the correct procedure!
          MR Thread
          GhostAccord 2.4L Blog

          by Chappy, on Flickr

          Comment

            #20
            Im having a hard time sourcing a p13 to use. However, a friend of mine does have a chipped p28, and can put a base map in for it. Would that be sufficient? Also a p06 is available.
            Last edited by SilkyCB; 10-30-2012, 06:50 PM.

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              #21
              Any known good working ECU should work. If your friend can monitor/datalog the chipped ECU that would be even better.
              MR Thread
              GhostAccord 2.4L Blog

              by Chappy, on Flickr

              Comment

                #22
                All of these ecus Im finding are confusing. Are all obd 1 ecus interchangeable? I know the p06 will run SOHC d series motors. Is it good enough to diagnose this ect issue?

                Sorry about all these questions. Im fairly new to the honda game.

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