View Single Post
Old 11-19-2009, 11:22 AM   #9
lyrikz
PITbut
 
lyrikz's Avatar
 
Join Date: Sep 2007
Location: monroe washington
Posts: 3,041
Re: 2002 Yukon no power to fuel pump

Quote:
Originally Posted by clinebarger View Post
Heres some diagrams and a connector veiw



CIRCUIT DESCRIPTION
When you turn ON the ignition switch, the control module enables the fuel pump relay which powers the fuel pump ON. The fuel pump remains ON as long as the engine is cranking or running and the control module receives ignition reference pulses. If there are no ignition reference pulses, the control module shuts the fuel pump OFF within 2 seconds after the ignition was switched to the ON position or if the engine stops.
Oh, and my guess is a bad ground somewhere. Unless you shorted something installing the new harness.
__________________
New project. 1971 Twin Turbo blazer

http://67-72chevytrucks.com/vboard/s...d.php?t=676047


My new YOUTUBE channel.. Videos of my truck and a current walk around.
Lyrikz74 Youtube channel DONE! SOLD!

My 1971 stepside build thread
My Build Thread UPDATED 6/11. DONE
and sold.
lyrikz is offline   Reply With Quote