2zr MAF amperage draw, help needed

[myfirstyota]

Originally Posted by tmontague

In the chance of an electrical issue pulling more current then the EFI system should your protection on the system is gone. Its rated for 10A if you splice down stream and increase the amperage of the fuse, then you could potentially over power the EFI circuit.

You could try keeping the fuse at 10A and see if it blows. I cant remember exactly how the fuse taps are wired internally but it does use the original fuse/circuit to power the added circuit and it never blows the original 10A circuit. But it also may be internally wires separately.

You likely will be fine but IMO the fuse tap is well worth no extra loaded circuits. Once the fuse cover is on, it is as clean as factory spec. Plus if you ever needed to remove the wire it's as simple as disconnecting it which I always like

Ok so my next question is:
For the efi fuse.. is it powered by a buss like the others?
Or is there wire feeding the powered side of the fuse? If there's a wire feeding the fuse, I could splice off that wire and run to an empty fuse slot, no?

[tmontague]

Originally Posted by 06YarisRS

Swap to EFI location complete.

New reading with MAF plugged in and after the ECU goes to sleep (about a minute):

30mA

Battery is reading 12.62V now and I decided to remove the tender. I'll let it sit for a few days, go back out and check voltage.

Once again, Trevor, thanks for this!

No problem, glad to help and hopefully it saves someone from being stranded with a dead battery. 30mA is a fine parasitic draw and will not kill your battery for a long time

Originally Posted by myfirstyota

Ok so my next question is:
For the efi fuse.. is it powered by a buss like the others?
Or is there wire feeding the powered side of the fuse? If there's a wire feeding the fuse, I could splice off that wire and run to an empty fuse slot, no?

I don't know for sure but I don't think its powered by a bus as it sort of fits by itself and it is one of the few if it only fuse in the fuse box that is ignition controlled.

There is a bank of fuses on the right of the fuse box that are all constant power and I'm pretty sure those are bus supplied.

You could probably lift the fuse box and chase a wire to the EFI fuse to see if there is a wire supplying it to tap off of. Too much work for me though, a fuse tap works perfectly and is quick