Has anyone had this issue, my 50am maxi fuse blew, mmmm, so , not sure what it is running, the manual says its a spare?? Spare to what? I don't have any other 50 amp maxi fuses, the rest are 60 with one 40, Truck runs fine?
Any thoughts,?
I am having problems diagnosing my SAI, thought it might be related, but cleared the code , changed the fuse, after a day the SAI came up again but fuse is not blown??

Cheers,
Thank you,

 

How do you know it blew and it wasn’t a PO who put their blown fuse in the spare space? Yours must be Bosch (as you have SAI). Mine is GEMS, so I won’t be much help.

 

Its a new box, I put it in myself about two years ago, all the fuses were new, so , yes I can confirm I have done a fuse check more than once over the last couple years, however, I cant remember 100 % if I checked the Maxi fuses , Think I did ? but that still would not answer the other question, the manual says its a 50 amp spare but there are no other 50 amps, so ???