How does KPRO send signal after initial priming to fuel pump

[tmartin]

So I had the opportunity to do another test today. I read that if you disconnect the crank sensor and try to start the car then it may start if your timing has jumped or is set incorrectly. I tried this. The car did not start. So I reconnected the plug and the car started although roughly and threw engine codes of P0118,123,and 113. I cleared the codes and the car started fine with no codes. At first I thought it was the process of plugging and unplugging the crank sensor but realized it was something else. I had disconnected the ECU to review how I would do the previous continuity tests you asked of me. In doing so I reconnected the ECU harness but did not bolt the ecu all the way in. Thats when the car started which made me key in on a short somewhere. So to try and find the source I lightly touched the wiring harness going into the ecu after bolting it back down and I again got the check engine with those codes. It seems that plug A has the short. Do you recommend any other tests or anything from your side? I am in the process of triple checking the wires first and then will check the ecu again for the source.

[Spunkster]

Those errors do not indicate a short. It sounds more like a grounding issue. Those wires have nothing to do with the harness provided so you could have n issue with your vehicle harness or a loose pin. You could also have a wire that is broken internally and looks ok, but sometimes looses continuity. I would recommend following the factory service manual for troubleshooting those specific errors.

[tmartin]

I agree these errors have nothing to do with the harness that you guys provide so I am good there. Thanks for the insight and I will track these down and report back since it is great to know what the end result is. Also are upgrades as simple as mailing in the ECU with the printed form? I am going to trace these issues down and get the upgrade once resolved.

[Spunkster]

Yes you just need the form, payment and the ECU sent in.

[tmartin]

Well I did a check based off the previously mention error codes. After further review this is what I found. I checked plug C (blueplug) and found that if I push it against the ECU grey housing the car will die. I can do this consistently and it seems to be related to the ECU not the plug. I did not depin the plug but can tell it seems as if the board on the ecu has a loose board solder to die so quickly. I attached a datalog capturing the kill of the motor when the ecu at location plug C is pressed on the grey plug area of the ECU. Hope that makes sense. Maybe the log will help you see what happening but you can see the sensors in this log are fine but the fuel relay looses signal yes Battery power still exists.

[tmartin]

Quick update I looked up how to de-pin the plug so just to cover my basis I am will de-pin the plugs and validate the pins condition as I agree a broken pin still could be an issue here to as its not always obvious.

[tmartin]

Ok I checked all the pins and they are all in good shape. Please follow the below YouTube link to see a video of the KPro killing the engine when I push on the grey ECU plug. I am overnighting the ECU to you guys so I can get it repaired and upgraded to KPro 4. Thanks for all the help.

http://www.youtube.com/watch?v=aXkkgCwvHbA

[tmartin]

HI there I received my upgraded to KPro4 ECU back today thank you for the fast turn around. I got it installed and tried to start the car and same issue. Car would start but it seems the ECU grey plug was not fixed because I can gently touch it and the car dies. If you reference the video in my previous post you can view the video I posted in regards. When I sent the ECU in I also put a note in the box with payment information pointing you guys to this thread so you had the video to reference as well as reference to repairing and upgrading the ECU. I verified the KPro 4 functions work such as blue tooth very well so thats pretty cool but there is still issue with the ECU and I am unable to drive the car. Let me know your thoughts and I appreciate the help.

[Hondata]

The adapter has been modified by someone, and we believe this is the cause of the problem. To fix it the whole adapter needs to be replaced, so if this is something you want to do then contact us.

[tmartin]

Yes this is something I had asked to be done as part of my note when I sent in the ECU and also completed the form with the extra funds to cover the additional work since there is extra expense if repairs need to be performed. Thanks for the information and I will reachout in regards.