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Electronicals / Forscan Expert
Joined: Fri Nov 24th, 2017
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On a 93 there is a VSS that connects directly to the PCM and the Cruise Control Servo module. There is no external square wave signal generated.
Also there is the ABS sensor in the back which also has a RABS test connector ran in parrallel so you tap in to that without being too invasive.
Now to convert the raw signal you may have to acquire a 2wd GEM to convert the signal.
I think the instrumentation was cable driven.
ABS Diagram:
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=8617
Cruise Diagram:
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=8618
Another method would to be to build a 555 square wave generator circuit that turns on when the truck is on. This will get the truck to think it's always in motion.
I made sometime similar when I was trying to make a speed calibration circuit (Forscan changed those plans).
Last edited on Tue Nov 28th, 2017 03:23 pm by sheltonfilms
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2000 XLT 2.5L A/T 2WD
Mods:
Power Windows/Locks Mirrors using OEM harness and parts
Explorer Sportrac White Face Cluster
Explorer OHC and Auto-dim Mirror
Auto Door Locks
Full HID Projector Retrofit