Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: Prof on March 05, 2007, 02:38:12 PM

Title: Speed signal - pulse or voltage ?
Post by: Prof on March 05, 2007, 02:38:12 PM
As the title suggests really, I have a Gen2 - I am interested to know what format the signal from the instrument cluster that feeds the cruise control takes - is it a series of pulses whose frequency relates to speed, or a voltage proportional with speed - anyone know - save me having to measure/scope it.  It\'s the signal on the Green / Red Stripe wire that goes into the cruise control connector.
 
Thanks in advance...
Title: Speed signal - pulse or voltage ?
Post by: kev-yorks on March 05, 2007, 06:45:22 PM
Pretty sure its a sine wave format Dave that works on frequency.
Kevin