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ABS Control unit powers on when?

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Old 01-14-2017, 04:34 PM
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Default ABS Control unit powers on when?

I'm wiring up a SoS pulse converter to my left front wheel's + and - wires for the ABS wheel speed sensor.
I verified I'm seeing 12V from my Infinity's AUX connector (pin 8). The SoS pulse converter's output is connected to the Infinity's Digital6 input (input 6 on the AUX connector).

When I turn the ignition to the ON (II) but don't start the car, spin the left front wheel, and look to see if I can see the wheel speed via Digital6 on the AEM software: I don't see anything

BUT I found in the Honda s2000 manual that
If the system is OK, the ABS indicator goes off 2 seconds after turning the ignition switch to ON (II) without starting the engine, and then comes on again and goes off 2 seconds later after starting the engine. This occurs because the ABS control unit is turned on by the IG2 power source.
This _seems_ to say that the ABS control unit isn't powered on until after starting the car? But I could be wrong...

I haven't tried starting the car because I've winterized my s2000 and really don't want to turn it on just to test this.. so bottomline: will the ABS control unit not power on, and not be able to listen to the ABS wheel speed sensor signal, until I actually start the car?

I'll reach out to SoS on Monday as needed. But any help would be appreciated.
Old 01-16-2017, 08:26 AM
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Heard from SoS: "You won’t see the sensors initialize and begin outputting signal till about 10 mph. You’ll probably need the car on the road or dyno to see pulse."
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