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I need to hear from anyone who has had the OBD2 port emissions test completed on their K-series EM2, or related chasis?? Im having a problem with them communicating to my ECU through my OBD2 port, and need some assistance stat. SOOOOO, anyone who has had their emissions checked via the OBD2 port on their K-swap, let me know.......

 
Rep Power: 297

i have mine done 4 years in a row now.... and just had it done recently with the k24 in there.. and i use my obd2 port to check for codes if any pops up. I had my o2 sensor popping up cause it was going bad.... but got that changed out and is running fine now

 
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so you ran ur k-swap 7th gen through emissions where they plug into the OBD2 port and check your values?? Are/were you running the stock RSX-S PRB ECM when u did the OBD2 emissions test?? BTW, I appreciate ur help xproductionz

 
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2days after i got my swap done i drove to the emissions.. they plug into obd2 port.. ran test sequences and past with flying colors.. i ws using the k20a2 ecu from a 02-04 rsx with hondata programmed into it

 
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So, did you use the Hondata reflash, or K-Pro?? And, did you need Hondata to pass emissions?? Did Hondata change anything that allowed you to do emissions??

 
Rep Power: 350

Have you called Hondata tech support about it yet?

 
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Yep, they werent of much help. They asked if I had any of their products, and then werent gonna help me until I told them I was going to buy KPro and see if it would help my situation. They then opened up a little bit, and told me KPro wouldnt be able to help me, and told me they didnt know what might be causing my issue. I need to find someone who has done emissions similar to the way I need to do them, and have them check the voltages on their OBD2 port wires so that I can compare them to mine. I dont know what else to do really. ANY suggestions are appreciated everyone!!

 
Rep Power: 350

Doesn't surprise me that they didn't want to help. But they're in california and they definitely know about emissions.

 
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With K-Pro, I am questioning if it will pass. The flashes might.

 
Rep Power: 297

i assume your using a stock ecu with the immobilizer reflashed at acura since your not using kpro??

What harness you using?/.. did you make it yourself or is it hasports or hybrids??

I question the harness part because without kpro you cant disable the secondary o2 sensor.. right now you should be throwing a code for the secondary o2 i think.. but hasport and hybrid do offer the option for the secondary to be wired into the harness..

 
Rep Power: 297

................

now on to how i think you should trouble shoot to make sure its the obd2 connector...

disconnect the primay o2 sensor...
start the car till the CEL turns on
kill the car but dont turn it off..
plug in an obd2 diagnostic tool.. you can get them from autozone for dirt cheap

hit the read button and see if it reads the code.. if it reads the code then your obd2 port is fine

 
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Im running a stock Type-S ECM with the immobilizer reflashed by a local Acura dealership. The wiring harness is HASport, and my CEL works, but is not on due to any issues, so Im assuming the secondary 02 has been covered. The HASport harness doesnt touch the wiring from the OBD2 port to the ECM either, so I crossed that off of my list of reasons why it isnt connecting. My problem is that it wont connect to my ECM, then I will see if it passes emissions. With my issue, the guys at Hondata said that KPro wouldnt be of any help.

Can any of you guys check the voltages on each of your 7 OBD2 port wires with the car running and let me know what each colored wire is doing?? This might help me troubleshoot some.

 
Rep Power: 305

Have you talked to the guys where you bought the car from? What did they do to keep the car legal after they swapped it?

 
Rep Power: 297

like i said....

intentionally make a code popup and then connect a code reader to the port to read the code.. if the reader pops up any of these codes

P0131
P0132
P0134
P0135
P0153
P0154
P0155

Then you know if the obd2 port is working or not.

however if it doesnt work find someone that has kpro and connect there ecu to your car. try the same thing again. If it actually reads the code then that means you might have a bad ecu.




PAY ATTENTION TO THIS.... Especially this

In order for your immobolizer to be reprogrammed. The Acura technicians connects the diagnostic tool to your OBD2 port. They use a HDS Tool or commonly refered to as a Honda Diagnostic System Tool. If your obd2 port was not working there is no way they could have reprogrammed your immobolizer.

____________________

So if i go based on info you told me. If you did get your immobolizer reprogrammed then that means that at one point you obd2 port was working when they matched your key with the transponder.

Doing the o2 sensor test stated above will at least eliminate the chance of your obd2 port not working.

Doing the ecu swap with someone with kpro will at least eliminate a bad ecu.

Last thing i can think of after that is acura might have accidentally turned off obd2 port access. Try these 3 things first before you go messing with your wires

 
Rep Power: 350

We checked his obd2 port with a scan tool. It links and connects. The port works. I think its a VA state issue with the VIN between the car and ecu. His emissions are legal as well.

 
Rep Power: 0

Ill try those things xproductionz. Except finding a KPro to borrow isnt gonna be easy. Is there an easy way to disconnect my primary 02 sensor other than going under the car and removing it??

I KNOW that my car was taken to Acura to have the immobilizer reflashed for my chasis, because I still have the paperwork and whatnot from it, and its on the shops worksheet of what was doen during the swap (plus I dont have KPro, so thats narrows it down as well). Thats good to know that the port was used and worked.

For the VA DEQ emissions test, you must first enter the chasis VIN, and then they try to connect for the test (which is where my car times out and will not connect). SOOOO, I then tried to use the engine/tranny/ECM VIN to see if it would connect to that due to a disagreement in VIN numbers/chasis', and it STILL would not connect......this is what started blowing my mind. Does anyone know if the PRB ECM stores the VIN number in it?? I only think that it might store the chasis code (DC5), so thats why I tried to run my RSX VIN through.

Last but not least, I appreciate everyone time and effort in helping me figure this out. Hasnt been the easiest thing to figure out.

Also, are you sure Acura can turn off my OBD2 port access, and is there a way for them to turn it back on??

 
Rep Power: 281

Hey I found this on hondata's site check it out.
http://www.hondata.com/immobilizer.html
This is the standard Honda immobilizer reprogramming process. This process also works matching an 02-04 ECU to an 05 or 06 RSX-S. You will use the VIN number from your 2005-2006 Acura. The VIN number is not stored in the 02-04 ECU.

 
Rep Power: 0

sweet...thats what I wanted to hear. So, Im assuming it isnt a VIN # disagreement issue. I connected a high tech scan tool up to it today, it connected, and we looked at the data stream from the OBD2....EVERYTHING looks cool.... I think Im gonna set up an appointment with DEQ and see what they can do for me in this special circumstance.....I also found out that VA DEQ uses 3 approved computer systems across the area to run the emissions tests on, so maybe there is a chance that the 1 system doesnt like my set-up, but the other 2 will.....at least some more options and new updates.....KEEP BRINGING THE INSIGHT AND ADVICE....this will hopefully be a good reference to other people in a similar situation.

 
Rep Power: 297

well see.. that just now eliminted you having to rewire the obd2 port.. arent you happy u didnt have to mess with that

 
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Yeah, but Im still oblivious as to why the system cant connect to my ECM.....OBD2 port seems to work, and no VIN disagreement should be occuring. Any other suggestions as to why this isnt working??

 
Rep Power: 297

go to acura and tell them that ever since the messed with the obd2 port that the emissions station cant access the ecu.. see if they can do emissions there

 
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They dont do emissions there.

 
Rep Power: 297

 
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xproductionz,
Could you do me a favor and check the voltage coming off of each of the wires of your OBD2 port?? If you could let me know what voltage is coming off of which of the 7 wires, it would help me troubleshoot. Thanks man, I appreciate your time and help.

 
Rep Power: 0

xproductionz,
I was also wondering if you ran your emissions with the chasis VIN number, or with the ECM VIN number?? DEQ is telling me that it will pass using the civic VIN number but I wanted to double check with what you did. Thanks!!

 
Rep Power: 0

I just tried to get my emissions tested at another shop with another approved/but different brand DEQ emissions analyzer, and it also would not connect......SOOO, Im gonna narrow out the chance that one computer over another is the issue, and the VIN # disagreement issue is narrowed out, and there is communication out of the DLC and the output voltage from my brothers GSR is close to the voltage I am getting out of the respective pins of my DLC, so that seems to check as well......I just dont know what causes an emissions analyzer system from connecting to ones ECM, and that is whats making this hard.......any help is appreciated.

 
Rep Power: 297

its one of 2 things.. either your ecu is bad... OR...... acura did something when they were accessing the obd2 port.. im telling you just go to acura and tell them ever since they messed with the obd2 port and linked up witrh the ecu it wont pass smog anymore

 
Rep Power: 0

so, if i can find another ecu to swap in and see if that the problem, what all will I need to do to that ECU??? rewire anything or reflash the immobilizer again??

 
Rep Power: 297

go to acura...

 
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Well, I know a couple of the techs at Acura and getting them to help me isnt a problem, but blaming this on them might ruin that connection I do have with them right now. Plus, they reflashed the ECM and immobilizer like 3 years ago and I didnt even have the car then, so I dont want to go in and blame it on them and ruin what connections I do have with their techs. BUUUTTTT, I do want to bring it to them and see if there is a way to turn off OBD2 access. With the question of it being a faulty ECM, I still need to understand what its gonna take to try another ECM to see if it works. Correct me if Im wrong: just bring a stock RSX-s ECM to the dealer to have reflashed again for my car. If this isnt the problem, is the ECM now not going to work in other RSXs without being reflashed back for the RSX?? Cause if the ECM isnt the problem, I wanna be able to sell it back to someone else who might need it. Sorry for all the questions and confusion, I just wanna do this right.