The bus is the communication interface between the many modules or computers on your vehicle. The engine and transmission modules need to be able to communicate with the cluster as well as the airbag, antilock brakes, and body control module to turn certain lights on and make gauges function. "No bus" means the communication line is either open or shorted and the cluster can't determine the inputs from the other modules. Any given module on the vehicle can pull the bus down as well as wiring. It is most likely a module causing the problem. One way to find the culprit is to disconnect each module with the key on until the odometer comes back to life. If it starts and runs, drives and shifts normal, I would do the engine and transmission last. I would start with the ABS and overhead console (if it has one). I hope this helps.
How to trouble shoot speedometer?
http://schematicsdiagram.blogspot.com/2011/06/speedometer-not-working.html
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http://technoanswers.blogspot.com/2012/01/speedometer-runs-backward.html
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http://howtobyme.blogspot.com/2011/08/warning-lights-on-and-speedometer-died.ht
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http://repairhelpcenter.blogspot.in/2012/02/speedometer-not-working-on-1993-ford.html
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http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html
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http://schematicsdiagram.blogspot.com/2011/12/vehicles-cluster-panel-not-reading.html
-------------
For
speedometer related issues, the help links are provided below. Click the link
below to go through its details: ----
How to trouble shoot speedometer?
http://schematicsdiagram.blogspot.com/2011/06/speedometer-not-working.html
-----------
why speedometer not working?
http://technoanswers.blogspot.com/2012/01/1996-fiat-bravo-speedometer-not-working.html
------------
Speedometer works but odometer not working?
http://technoanswers.blogspot.in/2012/01/speedometer-works-but-odometer-not.html
-----------
Speedometer runs backward?
http://technoanswers.blogspot.com/2012/01/speedometer-runs-backward.html
---------
Warning lights on and
speedometer died?
http://howtobyme.blogspot.com/2011/08/warning-lights-on-and-speedometer-died.html
--------------
ABS & Brake lights
warning indicator steady on dash and speedometer not working?
http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html
-----------
Vehicles Cluster panel Not
reading Miles?
http://schematicsdiagram.blogspot.com/2011/12/vehicles-cluster-panel-not-reading.html
---------
Odometer works properly but speedometer works
intermittently?
http://technoanswers.blogspot.com/2012/01/odometer-works-properly-but-speedometer.html
---------------
How odometer works in cars?
http://technoanswers.blogspot.com/2011/11/how-odometer-works-in-cars.html
--------------
Speedometer not working on Ford?
http://repairhelpcenter.blogspot.in/2012/02/speedometer-not-working-on-1993-ford.html
--------
This will help.
Thanks
For
speedometer related issues, the help links are provided below. Click the link
below to go through its details: ----
How to trouble shoot speedometer?
http://schematicsdiagram.blogspot.com/2011/06/speedometer-not-working.html
-----------
why speedometer not working?
http://technoanswers.blogspot.com/2012/01/1996-fiat-bravo-speedometer-not-working.html
------------
Speedometer works but odometer not working?
http://technoanswers.blogspot.in/2012/01/speedometer-works-but-odometer-not.html
-----------
Speedometer runs backward?
http://technoanswers.blogspot.com/2012/01/speedometer-runs-backward.html
---------
Warning lights on and
speedometer died?
http://howtobyme.blogspot.com/2011/08/warning-lights-on-and-speedometer-died.html
--------------
ABS & Brake lights
warning indicator steady on dash and speedometer not working?
http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html
-----------
Vehicles Cluster panel Not
reading Miles?
http://schematicsdiagram.blogspot.com/2011/12/vehicles-cluster-panel-not-reading.html
---------
Odometer works properly but speedometer works
intermittently?
http://technoanswers.blogspot.com/2012/01/odometer-works-properly-but-speedometer.html
---------------
How odometer works in cars?
http://technoanswers.blogspot.com/2011/11/how-odometer-works-in-cars.html
--------------
Speedometer not working on Ford?
http://repairhelpcenter.blogspot.in/2012/02/speedometer-not-working-on-1993-ford.html
--------
This will help.
Thanks
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