Need help 325 bobcat mini excavator

[crossroad12]

Went to start it and it would turn over but not start
So I tried a little starting fluid and it stand rain fine till I put the lever down and it died immediately
Wouldn't start so I tested the batty it showed a good charge and the charging system should but when I load tested it the bay showed bad
So the next step I did was took the battery off and before I put the chayon it I load test it again and the battery showed good
I have checked the fuses and they are good don't know how to check the relays so I'm just gonna change them around if that don't work then I don't know else to do
Any suggestions would be greatly appreciate

after I got home I put the battery back on and tighten the cables then I load tested a it showed good
Then I switched the relays around to no avail
Then I tied the kill switch back and it would run out the lever down and it stayed running but the problem now is that I had no hydraulic power moved all levers and nothing happened
And I think it had a code 3-15 on it which I'm gonna try to find
And thanks for the reply
I'm not very good at reading wiring diagram
I'm wrong bout the code it is 3-15 and it's not in my manual

 

[SharpOldNo7]

Here is what I found:

Code 03-15 on Bobcat equipment indicates a battery voltage fault. On machines like the 325 mini excavator, this means the main controller has detected that the system voltage is outside the normal, acceptable range (either too high or too low), typically during or after shutdown. [1, 2]

Troubleshooting Code 03-15
Diagnosing this issue starts with checking the most basic electrical and power components. [1]

• • Battery Condition: Test your battery’s resting voltage (>12.4 V) and running voltage (13.5 - 14.5 V). A weak, failing, or dead battery frequently triggers this fault. [1]
  • Terminal Connections: Inspect both battery cables. Clean off any corrosion and ensure the connections to the battery posts are tight. [1, 2]
  • Check the Alternator: If your running voltage drops too low, your alternator isn't charging the battery properly. [1]
  • Grounds: Trace the main ground wire from the battery to the frame. Loose or corroded grounds are common culprits for voltage fluctuation codes. [1]
  • Fuses & Relays: Check the main fuses and the ignition relay to ensure power is properly reaching the controller without voltage drops. [1]

For official diagnostic tools and a complete directory of machine-specific service information:
You can look up the serial number of your machine using the Bobcat Company Machine Diagnostic Service tool or check your physical operation manual.

 

[crossroad12]

Update
It was the instrument panel that was bad which controls everything
Got a new panel and everything is working as it should