Hello,
Problem - No Bus, but run great. 47K miles.
I tested 5V where I read to be tested - all good from what I can tell. New Crankshaft position sensor installed by a so-called "mechanic" to fix the no start after the engine was warm and shut off - had to wait as much as an hour before the engine would start again. I replaced the Distributor Pick up coil which fixed the no start problem after it was warm and turned off the engine. Still getting a No Bus reading. Well, if anyone could help, that would be great. There are other problems, but one thing at a time

 

Is it just a bad connection at the cluster? Might try unplugging sensors on the 5 volt bus one at a time, and see if the cluster comes back.

 

I think I got it. Thanks. Just disconnected and reconnected the connectors on the carb. The "No Bus" is gone after nearly 3 days of checking voltages per recommendations from different videos I watched. The cluster only went dead intermittently after both before and after the "No Bus" message. I'm glad I didn't spend the money for a new computer. Patience can be a payoff.

Anyone have a picture of where those darn vacuum lines go for the heater doors and such? I see the image under the hood, but a picture would be better.

Now onto fixing:

1. ABS and brake light on
2. Turn signal just stopped working.
3. Vacuum lines for heater control - need routing info (diagram or picture) for connection points.
4. Blower motor just stopped working?
5. I"D RATHER WORK ON MY 03 BMW - Much easier.

 

What is the bus?? Location please.image better👍

 

Communications bus. It's part of the electrical system.