max Posted December 9, 2013 Report Share Posted December 9, 2013 hello i have just put my engine back together and noticed that the blue led on the ecu is staying on all the time should it go out with the ignition or stay on permanently. ive never noticed it before so dont know if its a new thing or not thanks Quote Link to comment Share on other sites More sharing options...
Simon Posted December 9, 2013 Report Share Posted December 9, 2013 It should turn off when the key is turned off. It is indicating the ECU is remaining powered. It could be indicating a back feed through a aux output drive. Quote Link to comment Share on other sites More sharing options...
max Posted December 9, 2013 Author Report Share Posted December 9, 2013 ok thanks for that will investigate it further Quote Link to comment Share on other sites More sharing options...
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