Mechanics

- NO BUS CODE

2002 Dodge Durango • 200,000 miles

2002 Duarango with "no bus" code on odometer. No spark (won't start on ether). No codes on rented Auto Zone scanner. Crank sensor was shorted, bringing down 5-volt PCM system. Replaced sensor and now have 5 volts in PCM circuit, however still have no bus code and will not start. Does PCM system have a fuse and can it be a problem since there are 5 volts? Does the PCM code have to be deleted from computer for car to run and if so how to do it? Have had battery disconnected with no effect.
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Baumersk
December 28, 2011.



Disconnecting the battery can erase codes in volatile memory, but not in non-volatile memory. The scanner should have an option to erase or reset codes. Make sure the coil is receiving power.

Download the image attached. Then change the file extension to PDF and open it. It is the schematic for the computer data bus. I had to upload it as a jpg since our system doesn't allow pdf files yet.


Rivermikerat
Dec 28, 2011.