If what I've found is accurate, the speedometer itself takes the VSS AC signal and converts it to a DC output that is then sent to 3 other components. The receiving components are ECCS (ECU), Power Steering and Cruise Control. So the ECU itself does not tell the Power Steering Control Unit to adjust the amount of assist.
At the moment I am attempting to confirm what type of output the speedometer is sending. Some search results state its a frequency output of 2Hz - 120Hz, others listed it as a PWM ranging from 0v to 5v, and all of them agree its DC.
I'm still digging through related posts on the forum here as well, though a lot of links on older posts are dead.
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Silver ·
Right just did some maintenance on the car, mainly oil changing and fluid changing.
I also decide to replace the air filter with an apexi induction kit (had one sitting around from the 200sx).
Was a simple job that took about 10 minutes, as there was an HKS Mushroom already fitted.
Well after a road test I am now well impressed with the results as the sound is lush but best of all I am now getting more boost.