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Old 03-10-2009, 07:41 PM   #1
jonny772
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Default OBD II puzzlement

So today I get my brand new OBD II scanner, actron autoscanner plus cp9190, and of course I run right out and plug it into my car to check the engine light ( 2005 ion-2 manual) it works great and tells me my error code and other useful data. I decide to take it to my wifes car (2003 ion 1, auto) I plug it in and nothing, on my car I plugged it in and the scanner powered on. I then notice that the display where the odometer is, is flashing "service car, power stg" I unplug and it goes away, replug and it happens again. Started the car up and no check engine light or anything. Does anyone have any idea whats going on? Thanks.
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Old 03-11-2009, 10:56 AM   #2
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Default Re: OBD II puzzlement

sounds like a bad scanner, I have one scanner built into my scangauge and it does not have a problem reading my ion's canbus system or my sister's non canbus system. At the same time, make sure the scanner is canbus compatible, otherwise it will just be an expensive paperweight.
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Old 03-11-2009, 11:17 AM   #3
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Default Re: OBD II puzzlement

I would think that if it worked flawlessly on my car and not on my wifes car, both saturns, 05 and 03, that it would be the car and not the scanner
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Old 03-11-2009, 11:45 AM   #4
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Default Re: OBD II puzzlement

Check the ALDL to see if they pin out the same. I'm not sure, but I think the '03 Ion was KWP2000. You might also stop by Autozone to see if their scanner has the same issue on the '03.
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Old 03-11-2009, 11:49 AM   #5
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Default Re: OBD II puzzlement

I appreciate the information Gerry, however I am still new at the terms that you are using, so if you could give me some clarification I would greatly appreciate it.
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Old 03-11-2009, 12:38 PM   #6
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Default Re: OBD II puzzlement

I'm confused, you would rather have a bad ECU as opposed to a bad scanner that can be exchanged for a new one? OBD2 is OBD2, any canbus OBD2 scanner can read any OBD2 car, pinout on the ECU is irrelevant, that's the whole reason for the OBD2 standard.
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Old 03-11-2009, 12:57 PM   #7
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Default Re: OBD II puzzlement

There are five OBDII protocols. Pinouts do matter as does scanner translation software. Google "aldl pinouts" Again, if he wants a quick test to see if the problem is his scanner or his ALDL, he can take the car to Autozone. If they can scan it, it's his scanner. If they can't, it's probably his ALDL or elsewhere.
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Old 03-11-2009, 02:04 PM   #8
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Default Re: OBD II puzzlement

any decent reader will read all OBD2 cars, mine is a cheap one, but it still reads all cars.
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Old 03-11-2009, 02:08 PM   #9
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Default Re: OBD II puzzlement

I appreciate all the help I have recieved before, and your patience since I am pretty new at the electrical side of auto troubleshooting. So what you are saying, gerry, is that although they are both saturns they may have different pin connections in the OBD II connector? Or it could be a bad connector? I guess I just find it odd that it will run on one car correctly and not the other. Thanks again to all. And if I am beating a dead horse let me know
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Old 03-11-2009, 03:48 PM   #10
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Default Re: OBD II puzzlement

Just a quick note. I plugged it into my friends ford f 350 and it communicated with the truck correctly so it may be the car. Where should I start troubleshooting. Thanks again.
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Old 03-11-2009, 05:02 PM   #11
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Default Re: OBD II puzzlement

What he's saying is though OBD2 is a standard, there are versions of this standard, our cars have a canbus system, which is one version different versions use different pins, different code, or both. However most scanners available now support all these versions, especially quality ones. look for broken wires and loose pins in the connector. I would suggest removing power from the car before doing this as your ECU is connected to this, and providing it's still good, you want to keep it that way. Gently pull on the wires at the back side of the connector, if they come out or wiggle excessively, you have a problem.
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Old 03-11-2009, 05:30 PM   #12
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Default Re: OBD II puzzlement

http://pinouts.ru/Devices/car_obd2_pinout.shtml
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Old 03-11-2009, 07:52 PM   #13
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Default Re: OBD II puzzlement

that only proves that all ions are the same pinout, since they are all canbus and canbus is an absolute standard.

http://www.auterraweb.com/aboutcan.html
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Old 03-12-2009, 07:08 AM   #14
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Default Re: OBD II puzzlement

I posted the link to help him troubleshoot his ALDL. You're on some other track. And, again, if it were me, I'd take the '03 car by Autozone and have them try to scan it. If they can't establish comm, then it clearly points to a problem with the car. If they can, then it's his scanner. Simple, no?
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Old 03-12-2009, 09:46 AM   #15
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Default Re: OBD II puzzlement

I agree, getting a second scanner on it will definitely eliminate one or the other, you were thinking the 03s were KWP2000, I was simply pointing out that it is canbus like the rest of the ions, which is an absolute standard, meaning same pinout and same code protocols.
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Old 03-15-2009, 10:46 AM   #16
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Default Re: OBD II puzzlement

I have a feeling it is the car/scanner. I just did the exact same thing. I used the Actron 9180, and it wasn't communicating. I have an 04 Ion, but if I entered it as an 03 Ion, the scanner seemed to pick it up. I am a complete newbie in using this and am still learning, so if I figure anything more out I will post. No can do today though, the wife has the car.
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Old 03-15-2009, 01:28 PM   #17
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Default Re: OBD II puzzlement

Quote:
Originally Posted by Gerry Proctor View Post
I posted the link to help him troubleshoot his ALDL. You're on some other track. And, again, if it were me, I'd take the '03 car by Autozone and have them try to scan it. If they can't establish comm, then it clearly points to a problem with the car. If they can, then it's his scanner. Simple, no?
Just a note to "trust no one"! My local Autozone has not been able to "establish comm" with my 2003 ION-3 in the past when I've taken it to them for codes. Now that could be because of the canbus system... They were probably using an older scanner. If it is possible to run both IONs to Autozone and do a side by side test... that might be best particularly if you get the same problems I did on my 03 ION.
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Old 03-17-2009, 02:00 AM   #18
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Default Re: OBD II puzzlement

Probably wont help, buttttt....

I have a pc usb based obdII scanner that i could not get to connect to my 03 ion, it worked great on 15+ other cars/trucks(cavaliers, f150's, accent, echo, etc) Turned out for some reason it didn't like it when i was powering the laptop from the cars power port.

Try powering the obd2 unit from a different vehicle(park the 04 next to it and use its power outlet) and then connect it to your 03 ion's diagnostic port and see if it will connect.

let us know if you figure it out please.
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Old 03-17-2009, 02:14 AM   #19
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Default Re: OBD II puzzlement

scanners are always powered by the OBD2 port, there is no plug to power them elsewhere.
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Old 03-17-2009, 02:17 AM   #20
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Default Re: OBD II puzzlement

i wasnt sure about the handheld ones, but i did check out a picture of this unit and it clearly has a cig adapter for power i assume



another thing to check is to make sure the fuse for the cig lighter and accessory power port is not blown.
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