JCB160 _ electrical ghost problem

[DarienBuilders]

Hi All, hope everyone is doing well. I wonder if I can find wisdom here to solve mystery in my JCB160. One day all lights on the dash turned up at the start, all of them and buzzer accompanied. As I turned the ignition off and repeat, same comes on. If I start the machine, it works as it should but all the lights are still ON and … the buzzer. I took the clamp of from the battery, cleaned it and put it back on - and it was back to normal. I didn't get to work on it but later turned the ignition ON and the all the lights, all gauges are crazy and the buzzer came ON again.
I checked the alternator, battery, fuses - all good. Where would I look? How to get to see error messages on JCB, do you guys know? I am thinking to take the battery off again and if it starts in Normal mode, get into service menu to see codes. What do you think?

 

[hilux]

There is an ecu in the panel behind the seat. Check the plugs have a good connection and spray with electrical contact cleaner . Also go through any visible multi plugs and do the same. Had a similar problem on an 03 one years ago and that solved it. There is a computer reset , but I have forgotten how that is done but a jcb dealer will talk you through it. Could also be a loose wire.

 

[DarienBuilders]

Thanks Hilux, that's a great help, will do today and report back here. Hope that will do it. When I put a clamp back on in sparks a little, which tells me that there is a short someplace. After I reset the computer I will try to get into error menu to see if any codes will come up. Any other thoughts?

 

[DarienBuilders]

There is an ecu in the panel behind the seat. Check the plugs have a good connection and spray with electrical contact cleaner . Also go through any visible multi plugs and do the same. Had a similar problem on an 03 one years ago and that solved it. There is a computer reset , but I have forgotten how that is done but a jcb dealer will talk you through it. Could also be a loose wire.

Did it today, let's see what happens tomorrow when I put the clam pool back on.

 

[DarienBuilders]

Did it today, let's see what happens tomorrow when I put the clam pool back on.

I changed batteries, sprayed Ecu and un/pluged, didn't change. I took off panel on the right with all buttons and screen and found 2 shorts. Fixed it, problem seem to be vanished. Thanks.