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aaronwilmoth80911
Top Member
538 Posts |
 Posted - 04/21/2015 : 08:07:22 AM
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| I have a CAT C7 that died on the road yesterday. CAT ET will not hook up to it. It will however, hook up to other C7s, so I know it's not the program or the laptop. I checked my powers and grounds at the ECM and have them all where they should be I'm leaning towards it being the ECM, has anyone else had this issue? |
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Thomasbus24
Administrator
USA
4547 Posts |
Posted - 04/21/2015 : 08:20:38 AM
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Last C7 ECM I lost still communicated just fine (bus died, it showed all six injectors having faults).
I'd hate to see you buy a $1700 box if that's not it! Swap one first! |
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aaronwilmoth80911
Top Member
538 Posts |
Posted - 04/21/2015 : 08:53:01 AM
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| I'm in the process of borrowing from another bus to see if thats the deal or not. If it's not, i'll be scratching my head even more than I am. |
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aaronwilmoth80911
Top Member
538 Posts |
Posted - 04/21/2015 : 12:33:31 PM
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| Swapped ECMs and it started right up. New ECM is on the way. |
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OxDiesel-Doc
Active Member
25 Posts |
Posted - 04/21/2015 : 1:36:18 PM
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| Nice, congrats on your repair. |
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aaronwilmoth80911
Top Member
538 Posts |
Posted - 04/24/2015 : 12:19:21 PM
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| Got a new ECM and it runs great. Still had no communication though. Found the fuse from the "diagnostic" spot in the fuse panel was missing. Put in a fuse, and now have communication. This makes me a bit leary as now I'm wondering if it truly was an ECM that was the cause. I am waiting to hear back from CAT to see if they were able to retrieve any info from the old ECM. |
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eddo
Advanced Member
USA
311 Posts |
Posted - 04/27/2015 : 12:48:22 PM
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missing fuse, huh?
I had that on an old 1600 Series International. The driver (and passenger,) called me on a Saturday and said the bus just died. I arrive on site, check all the fuses- they checked good, and was stumped. I swapped out trucks, and sent them on their way. I spent about half an hour on the side of the road chasing no power to the ign switch- even though the fuses checked good. I was all set to hot wire the inj pump, and got a thought:
I double checked fuse placement- and the ign fuse was in the wrong slot... The passenger had been playing in the fusebox, pulled a fuse, and when the truck died, he panicked and quickly reinstalled it: putting it in the wrong spot. It was back in a spot that had ign power on the one side of the fuse, but no connector on the other side- so the fuse checked good. I put it back where it belonged, and the truck started right up.
I was livid.
I can laugh about it now, but mostly because that passenger doesn't work here anymore, lol ;) |
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aaronwilmoth80911
Top Member
538 Posts |
Posted - 04/30/2015 : 05:50:10 AM
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| It's a mystery as to where the fuse may have gone. The spot for the fuse was tight when I installed a new fuse. This particular driver likes to "fix" things on his own, so it's possible that maybe a fan stopped working or something, so he pulled a fuse to swap in an effort to repair himself. I'm pretty pissed about the whole thing. It'll pass in time, but it's bugging me right now. |
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CAT C7 No communication
