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05-06-2009, 03:25 PM | #1 | |
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Location: Midland, MI
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Error Connecting to ECU
I just joined the open source community after buying a openport 2.0 cable.
I had zero problems reading and flashing the ECU of my USDM 2002 WRX, however my brothers 2003 WRX will not even connect to read the ECU. I'm using the same cable, computer, software, and everything so I'm kind of at a loss. His test connectors are connected and the vehicle does go into test mode (flashing CEL and fans) just fine. It actually seems to do it faster and we think that is the problem. We've tried about 20 different times and even hit "Go" before turning the key to the "on" position. The log doesn't show much but here it is: Quote:
Thanks in advance.
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05-06-2009, 03:26 PM | #2 |
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Does he have Cobb's Accessport ver. 2 married to the ECU or an Ecutek tune?
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05-06-2009, 04:03 PM | #3 |
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No, not from him at least. He is the second owner, but the previous owner was an older man (over 60) and I doubt he had any engine management. The car was stock when he got it.
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05-06-2009, 04:06 PM | #4 | |
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Quote:
Really, then, you don't know what is on there. Just because the vehicle is stock, doesn't mean someone didn't get a stage 1 tune. Swap your ECU into your brother's WRX and see if you can get it to read. If so, then the Cobb/Ecutek lock is the likely scenario. |
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05-06-2009, 04:07 PM | #5 |
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pull the usb out and retry, and make sure the drivesr from the 2.0 are installed
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05-06-2009, 09:05 PM | #6 | |
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Quote:
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05-06-2009, 10:28 PM | #7 |
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Swapping the ECU takes like 5 minutes.
I would first make sure you are comfortable with the whole process of reading with Ecuflash and do it again on your car. If that was your first time, you might have ended up doing something different on your brother's car. Make sure you do not have any other applications open that might use the OP 2.0, such as RomRaider's logger. As suggested, if you have another failure, try unplugging the OP 2.0 and plugging it back in again and try again. |
05-06-2009, 11:50 PM | #8 |
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So assuming we find out that his ECU is locked in some way, what options do we have for removing the lock short of getting a new ECU?
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05-07-2009, 11:32 AM | #9 |
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i had a similar issue. i have an 04 with a swapped engine and i couldn't get a connection. same log as you posted above. i finally tried choosing a different year set (02/03 rather than 04) and it connected. when i went back through my paperwork for the engine swap i realized that the donor car that i got my "new" engine and ecu from was an 03.
when the swap was done they used the 04 harness so it used he 04 init block and all of the under dash connections were correct for 04. it never occurred to me to try a different year set on ecuflash because everything looked 04. c/n: maybe try a different year set and see if you can connect... |
05-07-2009, 12:17 PM | #10 |
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That is one thing we haven't tried. I'll definitely give that a shot.
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05-07-2009, 09:55 PM | #11 |
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I have had teh same exact problem with my 03 wrx as the original poster. Also a buddy that has a 03 wrx as well. Is there something about 03 wrx's that wont let it connect?
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05-07-2009, 10:32 PM | #12 |
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Had this same problem
I used an older version of ecu flash and it worked for me version 1.29a I believe, Try it out....
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05-07-2009, 11:59 PM | #13 |
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I found a copy of ECUflash 1.29a on megaupload. I'll be trying that tomorrow along with possibly selecting different model years. Hopefully something will work.
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05-08-2009, 12:45 AM | #14 |
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Okay we just tried ECUflash v1.29a and it doesn't recognize the Openport v2.0 cable...
Any other ideas? EDIT: Tried v1.34 and it doesn't seem to like the v2.0 cable either... SOB Last edited by 20BlueWRX02; 05-08-2009 at 01:02 AM. |
05-08-2009, 08:28 AM | #15 |
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Umm, yeah, using older versions of Ecuflash was a dumb idea considering the OP 2.0 wasn't supported until version 1.38 or so. And don't bother trying that version of Ecuflash - it won't work because you have the latest firmware version installed. Even besides the fact that if you can read an 02 WRX just fine, but can't read an 03 WRX, for which the ROMs and ECUs are basically interchangeable means there's a problem with that particular 03 WRX, assuming you aren't doing anything different when attempting the read on his car.
The problems could be: 1. Cobb or Ecutek flash that has "locked" the ECU. 2. Something wrong with the obdii port/wiring. Try logging the 03 WRX with RomRaider to see if you can. Also, connect with Learning View (available at the romraider.com site) and see what rom id is reported. |
05-08-2009, 09:06 AM | #16 |
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Don't you need to connect the test-mod plugs as well as the clear termination plug on the 03's if you want to read or write?
OP, have you connected these? |
05-08-2009, 09:23 AM | #17 |
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He said he connected the test mode connectors and that the fans would eventually cycle. The flash block is only necessary for flashing, not reading.
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05-08-2009, 11:06 AM | #18 |
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Try restarting the computer, I had to do that a few times in the past. When you go to flash, make sure the ECUFlash program is the onlt one open- Having the RR Logger open at the same time as ECUFlash messes it all up
If that doesn't work, go into your computer's "Device Manager" (it will be listed in "Hardware" in your computer's control panel). With the cable plugged in, click "Ports", and it will bring up a window for your Tactrix cable. If the BAUD rate is listed as 9600, try dropping it down to 4800, and always use the same USB port from then out. That will slow the connection down, and if your computer was thinking too fast for the ECU before, will fix your problem. If that doesn't work go ahead and bring it back to 9600, because the slower 4800 speed will be annoying |
05-08-2009, 11:59 AM | #19 |
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Unfortunately my dad decided to drive my brothers car to work today, since we're both home from college, so we won't be able to try anything until he gets home, but I did find Learning View and I already had RomRaider so we'll try those later tonight.
The only problem is after we were done trying last night we left the green connectors together. So how does the car run with these together?? Dad had no idea of course... |
05-08-2009, 12:28 PM | #20 | |
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Quote:
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05-08-2009, 12:39 PM | #21 |
Scooby Specialist
Member#: 156673
Join Date: Aug 2007
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Location: Midland, MI
Vehicle:2007 Impreza 2.5i CGM |
Exactly... that's why it's so weird that we can't get it to work. I'll try some logging with Romraider and Learning View later tonight, but then we planned on swapping ECU's to see if the problem follows the ECU (ECU locked) or stays with the car (wiring problem)
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05-08-2009, 03:55 PM | #22 |
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Okay with RomRaider I can get data like Air Intake Temp, AFR, Voltage, etc... In the top right it still says "Connecting to ECU..." and in the bottom left it says "Querying ECU..." I'm not sure if this is normal as I haven't tried this on my 02 yet.
With Learning View seems to work also, showing ROM ID: A4TC101L Description: 03 USDM Impreza WRX Transmission: MT ECU ID: 3614486105 IAM: 12 This is all with the green test connectors undone and the car at idle... Now what does this mean as far as flashing his ECU |
05-08-2009, 04:03 PM | #23 |
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That all is normal. One thing you can try is to reset the ECU in Learning View and then turn the ignition off and then on again and then connect again with Learning View. If the IAM is not 8 after that, then the ECU is tuned, although if it is 8, that doesn't necessarily mean that it isn't tuned, though. Make sure you do NOT have the test mode connectors connected when you try this. You do not have to start the engine (ignition has to be turned to "on").
The final option is to swap ECUs. That would be very telliing. |
05-08-2009, 04:34 PM | #24 |
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Reset ECU and IAM value returned to 8...
So.. is it finally time to swap ECUs? |
05-08-2009, 04:39 PM | #25 |
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To clarify, you are attempting to read the ROM with Ecuflash, not flash, right? To flash, you'll need the flash block connected. I don't think it will make any difference, but you might want to try a read with the flash block on there anyway as someone suggested (it will use a different flash connector than your 02 or you can manually jump it).
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