I KNOW THIS MIGHT NOT BE THE BEST PLACE TO ASK ABOUT A HONDATA ISSUE BUT IF ANYBODY HAPPENS TO HAVE ANY INPUT I WOULD TOTALLY APPRECIATE IT. BASICALLY I HAVE NO SENSOR READINGS IN HONDATA AND AM WORRIED THE ECU IS NOT READING CORRECT AND IDK IF I SHOULD CONTACT THE GUY WHO BUILT/REFURBISHED MY ECU OR IF I NEED TO FIX SOMETHING.

Hi, I have got my s300 installed into a p28 converted p06, the chip boots up with green on d3 and d4 and allows me to upload tunes, however I don't think it's actually reading the tunes and making any difference in my car. It's a weird situation because everything points to there being no problem because all my pins I've probed seem to have good grounds, power, and input but no matter what I do the sensors read like the image below. They never fluctuate or change and if I check them with the car on or off ecu plugged in or not it never changes anything. The weirdest part is how the battery reads 0v to me. anyway here are the pins I've checked.

d22 - grounded
D11 - gets tps signal as expected fluctuates with pedal
D12 - 5 v
D10 - continuity with map sensor signal wire
A12- continuity with iacv signal wire
A25 - constant 12v
A7 - switched 12v
A23 - grounded
A24 Grounded




since the map sensor and tps sensor recieve their 5v at the sensor and the TPS literally feeds the correct voltage between .45 - 4.5v or whatever it is as i press the pedal and the Hondata seems to boot normally I don't understand how it does not read the sensors or at least fluctuate the tps when i hit the pedal when the ecu has normal power and ground to it.

The last thing is I have a 99 hx ek civic, which is the auto cvt model. unfortunately I changed the engine, ecu, and manual swapped it all at once so I have a lot going on here but the car is a weird one and some people say all hx models are obd2a but my distributor plug is the obd2b style and the wires you repin for a iacv 3 to 2 wire are in the obd2b location so I am using a 2b jumper harness which, other than the sensor issue, seems to work cause the fuel pump primes, I get a check engine light with key on, and it cranks (sometimes throws a fire or two in there which Im thinking could be cause my 1000cc injectors are not updating or reading in the tune like they should). But anyway, I tried a 2a jumper harness and that didn't even prime the pump so I'm pretty sure it's 2b. The car was totally stock when I got is so I don't think anything has been fucked with in the wiring before me.

IF ANYONE READ ALL THAT THANK YOU LMAO

 

Check the J12 jumper inside your ECU and make sure it is removed/cut... if not, you will not have data flow as seen in your photo. Also, make sure your drivers are up to date and installed properly. Is your S300 new or did you buy it used ? If used, what color board does it have ?

 

Here are the photos I sent my ecu guy, he mentioned that a capacitor that needs to be removed now that I've looked up what your saying he did remove the j12 jumper for me so other than that i did buy the chip new and it's white. I have the latest hondata software and I registered the device, is there some kind of firmware update i need for the chip itself. I'll look into it now if that's what you mean.

 

ok i just looked at it and the firmware version is 24 and the hardware version is 3 and the j12 resistor is for sure gone and not making any contact. also my chip is seated properly

 

in case anyone comes across this thread with the same problem im just a dumbass and you have to click the lightning bolt to start datalogging, it does not exactly mean your recording the data just reading it and that fixed it lol.

 

Heheheheh... yes, that would help. Clicking the yellow lightning bolt gets the data stream flowing in real time... clicking on the Red "Record" dot just to the right of the lightning bolt will actually start recording the data stream; clicking it again will stop the recording and create a viewable/saveable datalog.