I just went to reset my ECU and when I pulled the fuse cover, I noticed the fuse that was in there was a 10amp. The factory diagram sticker indicates it should be a 20amp. I just picked this GS up and I am wondering why that might be. Should I leave the 10amp in there? It was running fine and I had no problems beforehand. Would there be any reason to only put a 10 amp instead of a 20amp? I'd hate to put a 20 amp in there and then go fry something because of too many amps getting through. Thanks for any input.

Even though it might not be causing any apparent problems I would still recommend putting the 20-amp fuse in there per spec.

are you sure it's the right fuse? the one you want is ecu-b.

I am positive I am looking at the right fuse. When I pulled it for an hour it definitely reset the ECU. I think for now I will leave the 10 amp in there instead of risking putting a 20 amp in and frying something.

In my RX, the EFI is a 20 amp yellow fuse...wonder if someone who had worked on it or a mistake from the factory with that fuse.