EEC-IV Open Closed Loop and Sensor Order

[dw85745]

Hi:
I'm new to the forum, but not Ford.

Read some EXCELLENT writeup in Fords EEC on this site but could find what I'm after.

I've been trying to get some "macro" information on the EEC-IV. Most everything I find is to detailed -- lamda curves on sensors, etc.

Since the EEC-IV is a computer it polls various things (e.g. sensors) in some order.
During Open Loop certain sensor are not polled, while in closed loop all sensors may or may not be polled.
I recognize the assembly code may have some "jump" instructions to skip things, but my "guess" is there is a
normal order to the loop and the sensors polled.

What I'm after is either:
1) A block diagram or
2) listing of closed versus open loop with the various sensor listed in the order in which they are polled.

For example in list format it might look like:

Sensor---------Open Loop-------Closed Loop
Coolant Temp------ 1 -------------- 1
ACT----------------- 2 -------------- 2
whatever
O2 Sensor--------- n/a ------------ 5

Sorry on formatting as even using "quote" system eliminates spacing.


Hope someone can help.

Thanks
David