*INFO* Checking your Skyline for its ecu fault Codes

[AKW]

The picture is gone, I need the picture...

I don't know what screw to turn, where the screw is, nothing like that at all...

[Gregzilla]

i only seem to have a red LED in my ECU it will flash 4 then 1, but will not go into diagnostic mode as it should according to this thread. and it will only flash when the screw is counter clockwise of about half.

[Danno]

There's only one screw on the back of the ECU. There's also a single red LED on that same side of the box.

An error code of 41 would have 4 long flashes, followed by 1 short flash. Then a pause, and it will repeat. If there is more than one error code, they will all be displayed, and then a pause, and repeat.

[Gregzilla]

yeah i figured it out. my intake air temp sensor was unplugged (41) but with it conected i get a 55 (no errors) and the car still runs like complete ****, i'm going to try a vacuum leak test tomorrow.

[MacAttack]

how come i only have one red led on my ecu?