Good, you've proven that the problem is with the generator, not in the camper. You need to be using the flow chart on Page 7.2-5, and the first thing it wants you to test is the signals on the 9-pin cable. The details of that test are on Page 7.2-17, and note that you are to unplug the inverter end of the 2-wire AND 9-wire cables and connect a jumper to pins 6 and 7 on the inverter end of the 9-pin cable so the generator will not shutdown. Also, you need to have the DC-link wires disconnected and capped. That's important, because there is a very high DC voltage on those wires when the generator is running with CB1 on.
There are actually only eight wires in the 9-pin cable, and with the generator running and CB1 on, you are making six specific DC voltage checks. Note that you will be moving the positive AND negative DVOM leads for each test. Then there are two AC voltage checks, so make sure you change the setting on your meter.
If any of the signals are not as described in the chart on Page 7.2-5, then you need to check the 9-pin cable for continuity by unplugging the generator end of the cable and measuring from one end of the cable to the other, pin 1 to pin 1, pin 2 to pin 2, etc.
Good luck and let us know what you find.
:):)
