Question about Computers & Internet
If the service engine light comes back on with
the same code you have a problem in the wiring between the TCM and the
PCM or the TCM itself is bad. CCD is the data bus the computers talk to
each other on. For some reason the TCM isn't sending required data to
the PCM. I can't find much info on how to troubleshoot. I would say if
the wiring shows continuity and the connections are clean and tight,
you may need a new TCM. , it
appears fixes range from loose connections to replacing entire wire
harnesses to bad TCMs. Read a couple that implied bad solder joints on
the instrument cluster or replacing the cluster itself fixes it. I'd
have to research that a bit.
PCM = Powertrain Control Module <> It's a computer that controls engine functions <> Located on the drivers side fender wall outboard of the battery
TCM = Transmission Control Module <> A computer that controls transmission functions <> Located on the passenger side fender wall
What symptoms are you seeing besides the service engine light?
Posted on Jun 17, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Dec 09, 2015 | Jeep Cars & Trucks
Aug 19, 2014 | Cars & Trucks
Trouble Code Conditions:
Engine started; vehicle driven in a forward gear, and the PCM detected that the O/D Pressure Switch circuit indicated open or closed at the wrong time.
Trouble Code Conditions:
Ignition on or engine started. The PCM received a message over the CCD Bus from the Transmission Control Module (TCM) that it had detected a problem and set a trouble code in memory.
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For the P0700 I would check your tps sensor first to make sure it is good. This is a common failure in this vehicle which can sometimes show as a transimission malfunction.
Hope this helps, if you want alot more info about jeeps goto www.cherokeeforum.com
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