Reply With QuoteBatt does mean battery, yes. It provides power to the ECU. But the ECU is only turned on once it has power at B+ also, which is from the ignition switch, maybe via a relay.
4ag wiring question?
i have sorted out all of my wiring but i need to know where the BATT (battery) wire on the ecu goes, and that is the power to the ecu? isnt it
do i run it straight to the (+) on the battery threw a fuse? or what
mereki.
~KEEP DRIFTING FUN~
Batt does mean battery, yes. It provides power to the ECU. But the ECU is only turned on once it has power at B+ also, which is from the ignition switch, maybe via a relay.
i know that but where do i run it too?
mereki.
~KEEP DRIFTING FUN~
hi mate im a autoelec that pin that says batt is actually a backup power supply for the ecu you should run it to power at all times fused 10amp
KK_86
cheers mate thats what i was wonder cause an ecu should alway have power or it would reset, cheers
mereki.
~KEEP DRIFTING FUN~
KK's correct, you don't need batt connected to get it running, but do connect it! In the wiring diagram that I have it connects to junction box 3 which is located near the steering column, and this is fed from EFI main relay no.2 in junction box 1 (driver footwell). I've bypassed JB3 in my set up for simplicity and am running a 10amp in-line fuse directly to JB1.
Typically it is run off the taillight + supply. Don't ask me why, that's just how Toyota did it.
Yeah golberg is right havent got a diagram handy for the colours but you can connect it to the stoplight + wire behind the l/h kick panel i think
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