

| Subject: | Re: No Start Cause: Relay Failure. PICS, Thoughts. |
| From: | David Beierl |
| Date: | Thu, 7 Feb 2013 01:37:12 -0500 |
At 05:47 PM 2/6/2013, Scott Daniel - Turbovans wrote: >Every EFI system ECU I have ever seen energizes the fuel pump relay by >supplying ground to it. It's the common strategy. A lot of electronic switching is done that way because the open-collector switching circuit is cheap and efficient and versatile. Yrs, d
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