Did a search no results-ECU red light

[BLKTOPS14SR]

What does it mean if the red light is on in the ECU. Redtop SR. I've done a search on this and nothing came up.

[ILikeMy240sx]

if the red light behind the ECU is on while the key is in "ON" position then this is normal.

When you turn your the screw(CW direction) next to the LED with the key still in "ON" then the light will go off. Turn the screw back to its original position then your lights will flash. This is your diag mode.

Now,Turn the screw back to CW direction and the light will go off turn it back to its original position and the ECU will come back to its normal mode.

[BLKTOPS14SR]

Thanks man!