2zr MAF amperage draw, help needed

[06YarisRS]

Originally Posted by tmontague

Solution found! Took 5 mins to fix it this morning when I hooked my battery back up after charging. I'll post the solution and pictures later today when I get a chance, but long story short, the headlamp fuses are constant 12v, not ignition 12v like the MAF should have.

I am now down to 20mA of parasitic draw which is well within the normal and should leave your battery fresh (assuming it's a good battery)

Fantabulous! Awaiting the fix. The fuse tap just moved to a new location in the fusebox?

[tmontague]

Originally Posted by 06YarisRS

Fantabulous! Awaiting the fix. The fuse tap just moved to a new location in the fusebox?

Yes to the EFI fuse, it is one of the only ignition switches 12v sources. I moved some connectors around to make it easier to run the fuse tap wire

[myfirstyota]

Originally Posted by tmontague

Yes to the EFI fuse, it is one of the only ignition switches 12v sources. I moved some connectors around to make it easier to run the fuse tap wire

I guess I may have to take a look at mine now. I just populated an empty fuse slot with the proper connector. But with all busses being powered all the time, i can inly imagine ill also have an issue but have yet to see it. Im Also not driving the car so no reason why i would have seen it yet.

[tmontague]

Originally Posted by myfirstyota

I guess I may have to take a look at mine now. I just populated an empty fuse slot with the proper connector. But with all busses being powered all the time, i can inly imagine ill also have an issue but have yet to see it. Im Also not driving the car so no reason why i would have seen it yet.

Yup, I tested all the empty and other used fuses and they were all constant power. The last one I tested was the EFI fuse and it was ignition only based on my testing and confirmation.

Keep in mind your draw will only be 110-140 mA, not 300mA like mine was since you dont have a faulty keyless entry. Still enough to slowly drain a battery but not as quickly.

Either way, having constant power to the MAF can't be helping its longevity with its temp sensor

[myfirstyota]

Originally Posted by tmontague

Either way, having constant power to the MAF can't be helping its longevity with its temp sensor

I was thinking that when I did the swap. "Its ok to have the maf powered all the time?" I came to the conclusion everything else on the buss was.... must be fine.

[06YarisRS]

Originally Posted by tmontague

Yes to the EFI fuse, it is one of the only ignition switches 12v sources. I moved some connectors around to make it easier to run the fuse tap wire

Awesome. Thanks. Don't have the fusebox diagram in front of me now. Hopefully my wire is long enough to reach. Were you planning a pic?

[tmontague]

Originally Posted by 06YarisRS

Awesome. Thanks. Don't have the fusebox diagram in front of me now. Hopefully my wire is long enough to reach. Were you planning a pic?

Yes, once I'm on my laptop in an hour I'll post my imgur pics up. You current set up will be long enough as the fuse is actually a bit closer to the wiring loom than the lightbulb fuse