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Scanner will not connect?

Tiny
FUNMONEYPIT
  • MEMBER
  • 2008 CHRYSLER TOWN AND COUNTRY
  • 3.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 126,000 MILES
Hi all, wife drove it to the store and shut it off. Came back out and it won't turn over. Dash lights up, radio works, etc but won't turn over. I went over and pulled the battery and charged it, still nothing. I then tried to put it into neutral to push it back and it won't shift out of gear. I do know how to push the release button so I can get it into neutral. I plugged in my scanner and it won't communicate with the computer. It powers up but says it can't connect. I did try the scanner on another vehicle and it worked fine. Also the check engine light does come on.
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Sunday, July 21st, 2019 AT 9:35 AM

25 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,070 POSTS
Hello,

Can you try the scanner on another car to confirm it is working please? Also is the security light flashing? To me it sounds like the TIPM is out but to be sure lets check the fuses here is a guide and the fuse locations so you can get started.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

I have included the TIPM replacement instructions as well just in case. It is easy to replace because it self initializes. Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Monday, July 22nd, 2019 AT 2:59 PM
Tiny
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Per my original post, I did try the scanner on another car and it worked fine (second to last sentence). All fuses are also good. I will review the procedure. Thanks
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Monday, July 22nd, 2019 AT 3:41 PM
Tiny
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Also to answer your question about the security light, it is flashing.
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Monday, July 22nd, 2019 AT 4:12 PM
Tiny
KEN L
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  • 43,070 POSTS
If the security light is flashing we should try to reset it here is a guide to help with that.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please run down this guide and report back.

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Tuesday, July 23rd, 2019 AT 12:48 PM
Tiny
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Ok, for Chrysler it states to disconnect the battery for one minute. Well I had the battery out for 4 hours while I charged it so that should have reset the security system if I am reading it right.
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Tuesday, July 23rd, 2019 AT 5:14 PM
Tiny
KEN L
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Yes the light should not be flashing try the reset to see what happens.
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Wednesday, July 24th, 2019 AT 9:50 AM
Tiny
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Ok, but like I said, I had the battery out which should have reset it. I can disconnect the negative again. I am not home right now.
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Wednesday, July 24th, 2019 AT 11:45 AM
Tiny
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Also, with the security light flashing, does that lead us down a different path or could it still be the TIPM? Thanks for all your help.
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Wednesday, July 24th, 2019 AT 11:51 AM
Tiny
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How about a hard reset touching the positive and negative battery cables together (of course after removing from battery)? Will that reset the security system?
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Wednesday, July 24th, 2019 AT 12:30 PM
Tiny
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Well I tried the hard reset, the lock/unlock with the key and FOB plus walking away. Battery was disconnected for two hours. None of it reset the security system.
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Wednesday, July 24th, 2019 AT 6:17 PM
Tiny
KEN L
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Yep, the TIPM causes all kinds of weird issues. Let me know if you replace it.
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Wednesday, July 24th, 2019 AT 7:00 PM
Tiny
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Can I use any TIPM from a 2008 T&C or do I have to match the numbers?
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Thursday, July 25th, 2019 AT 4:33 AM
Tiny
KEN L
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You need to match the numbers because there are production changes which will effect the operation.
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Friday, July 26th, 2019 AT 9:48 AM
Tiny
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Thanks again for all your help. I did try a known working TIPM that matched mine (same year with the correct number from a friends running van). It still does the same thing. Security light flashes and it won't start. I did talk to my mechanic and he said I have to get the security light reset at the dealer. I just can't believe there isn't a way to do it on my own. I have tried all the ways on the guide you provided.

Any other ideas?
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Friday, July 26th, 2019 AT 2:27 PM
Tiny
KEN L
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Here are alarm wiring diagrams to show you how the system works, we need to check for power at fuse j3, you your test light to see if there is power.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please let us know what happens.
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Saturday, July 27th, 2019 AT 10:38 AM
Tiny
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Are we sure the schematic is correct for a 2008 Town & Country? The box cover and manual says J3 is for the right rear door module. Also mine is a 30a and the diagram says it's a 40a. It does have power.
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Saturday, July 27th, 2019 AT 2:05 PM
Tiny
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Okay, looking further, J3 is for both rear doors. The manual actually states 40a but the TIPM cover states 30a. There is a 30a 8n the box. Following the wire diagram supplied, J3 goes to both rear doors so thinking this is not the alarm circuit.
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Saturday, July 27th, 2019 AT 3:26 PM
Tiny
KEN L
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Hmm, I think we should do a CAN scan to see what it brings up, here is a video that will show you how. They have CAN scanners on Amazon FYI.

https://youtu.be/InIlnsjOVFA

Those right the correct wiring diagrams as well. Let me know
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Sunday, July 28th, 2019 AT 10:20 AM
Tiny
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Well I gave up and took it to the dealer. They are saying the ECM is bad. Can you tell me where the ECM is located? They are saying they have to remove the bumper.
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Tuesday, July 30th, 2019 AT 6:00 PM
Tiny
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My research shows the ECM (or PCM) is located under the splash guard by the left front tire. Is this correct? Certainly wouldn't have to take off the bumper for that.
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Tuesday, July 30th, 2019 AT 6:36 PM

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