Volvo EC35C Blowing Fuses

[wskearley711]

Hello,

I have a 2012 Volvo EC35C (~900 hours) that suddenly shut off the other day after a couple of hours of use. The control panel (instrument cluster) would no longer light up or emit audible tones. I found that a 10 AMP fuse in the 'FU11' slot had blown. I replaced the' FU11' fuse and then the control panel (instrument cluster) came to life like it normally does. While attempting to restart the machine, the same 'FU11' fuse continues to blow.

Has anyone experienced this issue with an EC35C? Does anyone have a wiring schematic or any type of diagram that better labels the fuses?

Thanks in advance for the help.

 

[Bls repair]

Front looks weathered what’s the backside look like?

 

[jjaphipps22]

Blown fuses typically is short circuitry or bad ground somewhere.

 

[wskearley711]

Update: I replaced the fuse and cleaned up the battery connections. I was able to get it started (it would not start earlier with simply replacing the fuse) and the machine idled for a few minutes with no issues (instruments and gauges fully functional). I thought I was in the clear, but as soon as I lowered the arm-rest to start working, the excavator shut down and blew the same FU11 fuse.

Could a faulty stop switch in the arm-rest cause this issue? Are there any other grounding locations that I should check?

@Bls repair I will take a look at the back of the board this weekend.

Thanks to all.

 

[Bls repair]

Check wiring in area where arm moves for broken or worn wire.

 

[wskearley711]

Update: After a couple of days of searching and running through eighty 10 AMP fuses, I finally found the issue. A few wires had been worn down to the copper (see attached) in some wiring coming from beneath the seat.

We are back in business now!

 

[Tags]

That would do it, glad you got it fixed and going again, sometimes it's impossible to track down a short like that....