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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2
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Old 12-02-2012, 09:49 PM
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Default Re: No start.
Check the other 2 pins of the start relay, one should have power in run position and the other should have ground in the crank position
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Old 12-02-2012, 10:32 PM
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Default Re: No start.
If its not getting a ground during crank ecm is not sending crank signal.
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Old 12-03-2012, 12:14 AM
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Default Re: No start.
Quote:
Originally Posted by HUMTECH
If its not getting a ground during crank ecm is not sending crank signal.

Thats what it looks like. You wouldn't happen to have a decent ignition diagram?
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Old 12-03-2012, 12:34 AM
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Default Re: No start.
No crank signal, no OBD conection and no spark or injection... ECU
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Old 12-04-2012, 01:28 AM
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Default Re: No start.
As long as the data line is good, power and ground at ecm is good then ecm is bad.
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Old 12-04-2012, 06:23 AM
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Default Re: No start.
That's where I'm heading, good to have second opinion, thanks.
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