I am working on the same code, so I am jumping in with a few pennies.

Testing the termination resistors can be done in several different ways. I would recommend using all as a way to ensure you are not lead astray by a bad test result.

(1) Disconnect plugs at the the display and the controller. Check the termination resistor on the CAN pins for both components. You should read 60 ohms on each device. If not, you have a problem with that device.
(2) Check the resistance on your CAN wiring in the harness. Should read no resistance. Also, verify that you have no continuity between your CAN wiring to B+, B- or frame while disconnected.
(3) With the wires connected, you should read 120 ohms when back-probing the CAN wiring.

My test results were similar. However, a poor connection at the traction controller was causing my resistance to come in around 150 ohms. I could put tension on the plug and the problem could be duplicated, as well as cleared and my resistance would fall into range.

There is a remote possibility that the controller has a solder joint loose where the plug mates.

Hope this was helpful.