Mazda Repair Questions? Ask Mechanics for Answers ASAP
When you say "emissions test machine", are you referring to a generic scan tool? If so, have you tried a different one? reason for asking is that some generic scanners and code readers will not communicate with Mazda vehicles.
Also, what are you trying to diagnose/fix?
I see. There is an easy way to determine whether the fault lies with your vehicle or their emissions test machine; go to any major auto parts retailer such as Advance Auto, Autozone, O'Reillys, etc. and ask them for a free computer scan. If their scan tool communicates with your truck, then go back to the testing facility and tell them what has happened and ask them what is the official procedure to follow in cases such as yours.
However, if the auto parts' scan tool cannot communicate either, then the issue is with your truck - we can help you with that as well if necessary.
I'm not saying the emissions test machine is bad, just saying it might not be working on your truck.
I don't quite understand the rest of your post; have you gone to an auto parts and ask them to plug in their scan tool and see if it communicates with your truck - not if there are codes stored?
If they said that their scan tool did run a code search, then why don't you go back to the test station and ask them about any special dispensations for cases such as yours?
Now I'm confused... I thought the issue was the testing station couldn't communicate with your truck's PCM, but the auto parts could. If that's the case, nothing you can do can fix the situation.
Now, if you're saying there is an issue with your truck that is impeding communications with a scan tool, then I could potentially help you with that - only problem would be you not having a scan tool to use during our diagnostic process. Can you borrow one? Also, does the check engine light come on when the ignition is switched on?
I'm sorry, but at this point there's nothing I could contribute that would help you solve your issue. I'll opt out so others may try. Please don't reply until another expert responds or the site will cycle this request back to me.
Welcome, I'm Chris (aka Moose).
The prior tech has opted out.
If I understand no scan tool tool will link to your vehicle for scanning and monitoring, correct?
Okay lets start with the wire diagram below.
At the DLC you should get power on orange wire and ground on the black and black white wire. These 2 will power up the scan tool.
Next unplug the PCM and OHM test from the PCM to the DLC the purple, pink/light blue, and tan orange wires. Ohm test them from both ends to make sure they are not broken. Then Ohm test each wire to battery positive and negative to verify there is no continuity from wire shorts. If all tests pass then communication should be able to occur.
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According to your tests the only reasons left could be the PCM and the ool being used but you said you replaced the PCM and the emissions place and a parts store could not communicate. Do you know someone with a dealer equivalent tool that can do a data link diagnostics test?
It takes about 2 weeks for the monitors to all complete. Those test ID#s do not cross reference to Ford info. The parts store most likely has a manual or website login for this tool which tells them what those numbers mean.
The point though is you can communicate with the computer so the concern is the testing center, not your vehicle.
A trouble code looks like P0301 misfire cylinder #1. The info this generic tool is giving us is not that helpful.
Keep in touch if needed
Hello again Chris here,
I am contacting you because the post has not been closed or rated. We have 7 days to get a post rated before it times out. When a post times out, that means its no longer on my active list (if you reply I never know it.) You have already paid the fees to get this question answered, but it appears your not pleased, or need more help.
Let me help some more. Is there anything else you feel I could offer so you would be pleased with my help. I have the option to call you if that would be better.
Thanks for keeping in touch. Please continue prior to the post timing out and closing on the 22nd