Speed sensor input from Honda Y21?

Discuss which Sensors work best with these ECUs and share how you are using inputs and outputs
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Pockets
Posts: 6
Joined: Fri May 30, 2014 12:42 am
ECU Model: S40 Pro
Distributor: Watsons
Firmware Version: 62

Speed sensor input from Honda Y21?

Post by Pockets »

My S40Pro manual does say that it uses speed input data from a Hall Effect undriven wheel sensor. However it doesn't say whether or not it would read the input from my Honda Y21 gearbox/diff speed sensor (attached to a 1994 B16A2 now residing in a Mini). Can anybody enlighten me?
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: Speed sensor input from Honda Y21?

Post by stevieturbo »

Pockets wrote:My S40Pro manual does say that it uses speed input data from a Hall Effect undriven wheel sensor. However it doesn't say whether or not it would read the input from my Honda Y21 gearbox/diff speed sensor (attached to a 1994 B16A2 now residing in a Mini). Can anybody enlighten me?
If it's a hall effect sensor then it probably will.

If it isnt...then it probably wont lol
Pockets
Posts: 6
Joined: Fri May 30, 2014 12:42 am
ECU Model: S40 Pro
Distributor: Watsons
Firmware Version: 62

Re: Speed sensor input from Honda Y21?

Post by Pockets »

Gee, thanks Stevie.

Maybe I should rephrase my query: has anybody on this forum successfully used the VSS feed from a Y21 gearbox to generate a (preferably calibratable) speed reading on a device attached to a DTA S40 Pro?
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: Speed sensor input from Honda Y21?

Post by stevieturbo »

It's generally fairly simple.

In most cases if it is a 3 wire sensor it is hall effect. This will have a power supply, ground and signal return so quite easy to identify and test.

If it's a 2 wire sensor then it is not, and usually VR.
Fredrik
Posts: 25
Joined: Thu Sep 29, 2016 2:01 pm
ECU Model: P8 Pro

Re: Speed sensor input from Honda Y21?

Post by Fredrik »

It is a 3 wire sensor but it is a gear on the sensor that is driven by the differential 1 turn generats a square wave with 4 pulses per rpm. thats what I have found but not verified. I plan myself using it as a driven speed input.
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Speed sensor input from Honda Y21?

Post by Alex DTA »

Fredrik wrote:It is a 3 wire sensor but it is a gear on the sensor that is driven by the differential 1 turn generats a square wave with 4 pulses per rpm. thats what I have found but not verified. I plan myself using it as a driven speed input.
If it is a Hall effect with 4 or more pulses per rev, that will work fine.
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