3rd gen CAN B bus resistors

[Rufi]

Hello, I am new to the forum, great info here! I just bought a 2006 4.7 RAM and it has a no crank-no start and ‘no bus’ message on the cluster. The CAN B bus is down and I cannot find the location of the 120 ohm termination resistors. Where are they located?

 

[Rufi]

Ok, I thought I’d post the solution as others may benefit. CAN B on a 2006 RAM is no ordinary canbus. Voltages (measured with voltmeter) are 0.5 and 4.5 volt. Very confusing to the normal approx. 2.5 volt values.
And there are no termination resistors uses in any computer or wiring harness.
My ‘no bus’ (and no crank-no start) problem was solved by replacing the instrument cluster. The previous owner put a 2007 cluster in this 2006 truck. It looks 100% identical, lights up and performs the self test, but it will not communicate.
Hope this helps others as well.