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clsmooth

Link G2 intermittent/won't start

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Hi all,

I used the search function but couldn't find my particular issue.  I've been running a Link G2 in my Canadian daily-driver 2000 Impreza 2.5RS reliably without issue since about 2008.

Last Thursday when getting ready to make my way to work, she just refused to fire up (cranking over, but nothing else).  I checked over everything I could and got stumped, so had it delivered to the shop I trust I've been dealing with for years (for things I can't fix myself).  Ironically, once at the shop she fired right up :wacko:

They were able to narrow down the issue but not the cause yet.  What it's boiled down to is that: When the key is in the start/crank position, there is no power to the fuel pump and no injector pulse.  When the key's in the on/run position, there's power.  To thicken the plot, this is also happening intermittently. 

My car's been at the shop cause for almost a week now (they don't want to give it back just to end up stranded somewhere) as they're still checking and testing things.  New main relay has been installed and there's power at the ignition when cranking.  Yesterday I was told it might be the computer itself, but they still want to test.

Is my G2 tired from being used in a daily-driver setup, or could there still be something else?

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Check that there is power to the ECU when cranking. If there is sufficient voltage to the ECU during cranking, but still no injection or fuel pump then the trigger inputs to the ECU need to be checked. The easiest way to do this is to connect to the ECU with a laptop and check the status of the triggers and RPM. You are going to want PCLink version 3.40 to do this. You can download it from:

http://www.linkecu.com/Software-and-Support/PC-Link-Downloads

 

G2 trigger check.PNG

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Well, the cause has been narrowed down.  I was advised this morning that there are visible solders on the board that are burnt.  The board's being sent to a specialist to see how much to repair...

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If you need further help with identifying components on the board you can email us a photo of the damage. tech@linkecu.com.  If you do, please incude a link to this thread so we know what the image is for.

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