Battery drains overnight (EFI relay staying on)

[Westcoastoz Lurker Find all posts View Profile Close Westcoastoz]

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[LeighW Avid PP Poster! Find all posts View Profile Close LeighW]

Hi not much help but the EFI relay not remain on, try disconnecting the battery for
half an hour or so, this will cause the ECU to reset and it may clear itself.

If that doesn't work, isolate it back to the ECU and confirm the ECU is operating
the relay and not some funny mod they have installed.

If you isolate it to the ECU the affraid it will be off to the dealer for diagnostics and
most likely a new ECU.

Cheers
Leigh

[Westcoastoz Lurker Find all posts View Profile Close Westcoastoz]

Thanks for the reply Leigh.

We are pretty sure the violet cable stays powered up via the ecm/u which then operates the relay for some reason? We powered the car down and the amps go to a level that wouldn't drain the battery and then after a bit the ecu powers up the relay for some unknown reason. The amps then go back to normal after we remove the fuse! Weird and very annoying.

I had the battery disconnected overnight the other night and didn't seem to make a difference.

I have it booked in at Toyota but not until next week.

[forte Lurker Find all posts View Profile Close forte]

What was the cause & was it solved?

Mine has similar problem and don't know what is draining the current.

[baggs71 Inactive member. Find all posts View Profile Close baggs71]

Jeez mate you fixed it?

[Westcoastoz Lurker Find all posts View Profile Close Westcoastoz]

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[prado2004 Advanced Member Find all posts View Profile Close prado2004]

lucky they gave you your money back, great outcome in the scheme of things!