Controlling an automotive electric throttle body

hello, have project i'd control airflow use of automotive throttle body.   i'd set can have throttle go specific percentage of open (0-100%) based on inputs.  question trying figure out kind of signal send throttlebody.

here link pinout it.

http://i34.photobucket.com/albums/d147/hunterkiller89/tb22.jpg

pin 1 throttle position signal #1   
pin 2 sensor low voltage
pin 3 throttle position sensor 5 v reference
pin 4 throttle position signal #2 
pin 5 throttle position actuator control close
pin 6 throttle position actuator control open
pin 7 throttle position sensor low reference
pin 8 5 volt reference

the pin 5 , 6 kind of throw me loop, send positive voltage 5 or 6 depending on if want close or open?

thanks,
grant

can't tell without more information - photo of unit might more informative.  have measured resistance of these control signals ground (they might separate motor windings instance).

Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Controlling an automotive electric throttle body

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