Anyone know what this board is?

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Toyota 5Lt surf
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Anyone know what this board is?

Post by Toyota 5Lt surf »

Hey guys, i picked up a loom and ecu from a vs manual the other week, and today when i was checking the loom over i came across this little guy. Not sure what it is, what its for, or if its needed. Is it a BCM sim? It was wired in near the ecu/aldl plug.
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j_ds_au
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Re: Anyone know what this board is?

Post by j_ds_au »

Well, it's some sort of divide-by-ten circuit. It has a pulse train input (which might not be a square wave), feeding a transistor amplifier, thence a 4017 divider IC, feeding a transistor/MOSFET output stage with pulse-by-pulse current-limiting protection.

Joe.
Last edited by j_ds_au on Tue Jun 09, 2020 1:21 am, edited 1 time in total.
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delcowizzid
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Re: Anyone know what this board is?

Post by delcowizzid »

Could be a speed signal convertor possibly
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RVK355
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Re: Anyone know what this board is?

Post by RVK355 »

in a little black plastic cover?

speedo signal converter, from a VS getrag loom
vp304
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Re: Anyone know what this board is?

Post by vp304 »

Maybe a factory 215kw vr vs hsv 6 speed manual car. That the wiring come from
I heard these ran some kind of speedo converter from the factory
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antus
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Re: Anyone know what this board is?

Post by antus »

Sounds like they're on the money above. Def not a sim (even though it says VT Sim on it), as there is no processor in there for any kind of digital logic or comms, just a good old analog circuit.
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