Ignition wiring question.

[Jon]

Ben,

I looked at the schematic of the ECU... pin 3 feeds through a resistor 
to a chip that appears to be a pulse detector, then through two 
flip-flops and into the uC. It looks like the pin on the uC changes 
state every time the ignition coil fires. I think you can safely ignore 
pin 3. It is probably used by the ECU for diagnostics.

Jon Davis

Ben Fenner wrote:
> Jon wrote:
> Can you measure the ohms? That might help.
> 
> If I can find two points in the system to measure. I guess pin-3 on the 
> ECU, and then some point after the resistor. Any ideas? I'll give it a 
> shot.
> 
> -Ben Fenner
> 1994 Black SE-R (going VEMS, then turbo)
> 1994 Black SE-R (with sunroof)
>