Learning how to do automotive electrical trouble shooting . Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Reading wiring diagrams !
The Trainer 32 How To Read An Automotive Block Wiring Diagram
.Finding wiring diagrams
http://www.bbbind.com/free_tsb.html enter vehicle info year , make , model an engine size . Under system click engine , under sub system click fuel controls . Click the search button one link pops up , click on that .Third diagram down is fuel pump electric diagram . See there are two connectors in that wiring harness , C - 200 & C - 305 . Plus you will see the power wire is gray . Find the connectos check for B+ voltage along the harness
The Trainer 29 Understanding How Electrical CIrcuits Work and How to Test...
The Trainer 23 How To Repair Wiring and Wiring Connectors
SOURCE: 1997 k1500 just quit and will not start
you should have power on the tan wire for about 5 seconds with key on try to cycle key on for 5 sec off for 10 sec if no power chehave power on both sides of fuseck ecm 1 10 amp fuse if you check ecm b fuse if that is ok check for power on the orange wire and power on the green with white wire on fuel pump relay if you have power on those check for power on the grey wire out to fuel pump if you have power on grey wire you have a bad wire from the grey to the tan wire some where in the harness hope this helps
SOURCE: 1994 Chevy S-10 Blazer 4-door fuel pump replaced but not working
you should have 2 ecm fuses under the dash in the fuse box check these one of them is probably blown I have had 2 s10 that blow this fuse occasionally
SOURCE: 2000 S10 4.3L
At the fuel pump relay you should have 1 full time hot wire. 1 hot wire when you turn on the switch. 1 ground, and the other wire goes to the pump. Test the ground to be sure it is good. If so then jump a hot to the one that goes to the pump and see if it runs.If it does then you have a bad relay or ECM. You can swap the relay with another of the same # from tour fuse box to test it.There is also a ground on top of the frame near the filler neck, check it too. Good Luck
SOURCE: 2000 chevy venture doesnt start
Not the IAC, or MAF, or 02
Does the Van Crank over?
Have you checked the IGN Relays? 1,2,and 3?
How did the Battery test out?
Anything below 11.9v battery is dead.
So I suggest that you do not throw any more parts and check the battery again.
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