FW: Re: MC ECU codes in 4kq/Ur-q

["Lawson, Dave" <dlawson@ball.com>]

> Martin,
> 
> >Just wondering, for all of people who have swapped MC engines into
> >4kq/Urq how do you read codes.
> >I know that you need to supply the yellow wire 4 seconds of 12+ but then
> >which output (12+ or ground) do you use with the LED?
> 
> I can download codes on my MC engine installed in my ur-q, through 
> a momentary switch and an LED.  Here is the circuit I found in my
electrical notes.


                 led    resistor
  +12V ------o------W----
                                     \
                                       \
                                         ----  ECU Pin 31
                                       /
                                     /
  GND ---------/ -----------
                momentrary
                switch


HTH
> -
> Dave Lawson
>