fuel pump not coming on
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Scotty Dont
- MegaSquirt Newbie
- Posts: 5
- Joined: Wed Oct 01, 2008 7:49 am
fuel pump not coming on
this is on a msii v3.0 board and when the ecu is powered up the fuel pump wire has no voltage. Am I missing a setting here, I thought ms was supposed to switch on the relay aslong as Prime pulse was greater then zero.
Re: fuel pump not coming on
MS provides a ground circuit for energizing a fuel pump relay, whether you use a factory relay or add a relay to control the fuel pump. So, you will not see voltage at pin 37 of the DB37 connector because it reads to ground when the fuel pump signal is energized during priming pulse or when MS receives tach signals.
-Dennis
-Dennis
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Scotty Dont
- MegaSquirt Newbie
- Posts: 5
- Joined: Wed Oct 01, 2008 7:49 am
Re: fuel pump not coming on
HAHA thanks for the quick reply, I changed the relay to a switched ground turned the key and she fired right up 