Hi all,New to the forum and looking for help. I have a 2015 BX25D-1 with 170hrs on the clock. a Couple days ago the temperature gauge stopped showing any reading. I shut down and checked to make sure I was not overheating and coolant was ok and all was good. When I went through startup I watched the instruments and the normal lights and displays lit up including all the LCD indicator checks on the digital temp and fuel gauges. once the tractor was running though there was no temperature indication even though the motor was at operating temperature ( I didn't measure it but had been running the tractor lightly for at least 30 minutes prior). all other instruments are working normally.
I left it overnight to start with a cool engine. So far I have checked the sender and while I don't have specs on resistance versus temperature I did find that at ambient temp (approx. 25 Celsius) the reading was about 250 ohms and as I let the motor warm up the resistance would drop in response. I only ran it until the measurement got to about 180 ohms. The sender is at least responding. If this sender went directly to an analog gauge I would consider grounding out the wire to see if it would peg the needle but this is a digital display and goes through the CPU. I have tried to attach a picture of the wiring diagram. seems pretty straight forward. single connector sending unit goes to a harness behind the gauge cluster, then to the CPU and that sends the signal to the LCD display. My issue is troubleshooting without doing anything to compromise the CPU.
Does anyone have experience with these digital displays/ CPUs?
