March 17, 2025, 04:32:59 PM

Author Topic: T56 Speed sensor pin outs?  (Read 2395 times)

Offline BNR34RB26DETT

T56 Speed sensor pin outs?
« on: February 06, 2018, 08:11:20 PM »
T56 speed sensor question. I'm using stock ecu and pin out on red side calls out for pin 20 VSS low and 21 VSS High. How should i wire up the t case ss? So I hook up the green pin 20 wire and ground the other? Pin 21 cable came cut off.

-CZeroMedia
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Offline digitalsolo

Re: T56 Speed sensor pin outs?
« Reply #1 on: February 06, 2018, 10:31:11 PM »
I take it that's a 1 wire sensor?   If so, that should work in theory.   Stock sensor is two wire, obviously.
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...
2007 Aston Martin V8 Vantage - Gen V LT4/TR6060, upper/lower pullies, headers, tune.
2021 Tesla Model 3 Performance - Stock...ish.

Offline BNR34RB26DETT

Re: T56 Speed sensor pin outs?
« Reply #2 on: February 06, 2018, 10:34:21 PM »
I take it that's a 1 wire sensor?   If so, that should work in theory.   Stock sensor is two wire, obviously.

its a two wire. im assuming one goes to VSS high and other to VSS low but im just confused as to why the purple wire is cut on the ECU side......
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Offline digitalsolo

Re: T56 Speed sensor pin outs?
« Reply #3 on: February 07, 2018, 09:32:57 AM »
They're sometimes tapped for something like a Dakota Digital.  Not sure why it'd be cut though.
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...
2007 Aston Martin V8 Vantage - Gen V LT4/TR6060, upper/lower pullies, headers, tune.
2021 Tesla Model 3 Performance - Stock...ish.

Offline onefastrx7turbo

Re: T56 Speed sensor pin outs?
« Reply #4 on: February 07, 2018, 03:53:43 PM »
Pin A on the connector is light green/black and goes to ECU pin 20. Pin B is purple/white and goes to ecu pin 21.
1986 RX7 - L92/T56 in progress
1989 RX7 - for sale!
1993 RX7 - waiting to be reborn
2006 Lexus GX470 For offroading
2010 RX8 - new DD
Past rides......
I don't really need them listed in my signature................

Offline BNR34RB26DETT

Re: T56 Speed sensor pin outs?
« Reply #5 on: February 08, 2018, 07:22:44 PM »
Pin A on the connector is light green/black and goes to ECU pin 20. Pin B is purple/white and goes to ecu pin 21.

awesome! thank you
LS6 FD Build Video Series :drive: