UK Monster Owners Club Forum .: Technical :. Electrics » '02 S4 Immobiliser and ECU light question

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Old 13-09-2019, 06:53 PM   #1
Darren69
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'02 S4 Immobiliser and ECU light question

After key ignition on and clock sweep I'm sometimes getting a single flash from the immobiliser light and then a solid yellow light. I had a list of these somewhere but can't find them. Is this just a simple key misread or something else? Doesn't happen every time.

I'm also sometimes getting the ECU light on after clock sweep and sometimes the above Imob error light too but sometimes just the ECU light and then sometimes its Ok.

Can anyone please help? I seem to have misplaced my Diagnostic leads so I can't see what the error light is being caused by.
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Old 13-09-2019, 07:26 PM   #2
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Originally Posted by Darren69 View Post
After key ignition on and clock sweep I'm sometimes getting a single flash from the immobiliser light and then a solid yellow light. I had a list of these somewhere but can't find them.
Is this of any use? It tells you what the various led flashes mean.

http://www.avantiraceparts.co.uk/page.php?id=29
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Old 13-09-2019, 09:11 PM   #3
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Is this of any use? It tells you what the various led flashes mean.

http://www.avantiraceparts.co.uk/page.php?id=29
Yes, cheers Luddite. that helps because I recall multiple flashes for a key misread and so I think that the 1 flash is a fault with the clock to ECU connection. I noticed that the clocks were a little bit loose and on further inspection the rubber isolastic has split again on one side so there is more movement than I would like. This is the second time of replacing it and the bike has done nothing but stand for 12 months so why it would split is a mystery but could be the cause if the connection is loose on the back of the clocks. Will pull it apart and clean connections, fingers crossed. Thanks again.
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