There is a temperature sensor in the crankcase breather cover that sends a signal to the solenoid on the fuel filter console that tells the engine to squirt fuel into the cold start injection nozzles if the engine is cold. I think even the 69E has this. The 69E pump is unique in that it has two solenoids on the MFI pump rear cover. One is the starting solenoid which pushes the main rack full rich for starting. If there are no cold start nozzles in the plenum or stacks, then this is your cold start system.
The other solenoid is the shutoff solenoid. This one pushes the rack full closed, past idle setting. This allows the engine to loose revs faster for better throttle response and also stops fuel from going into the engine with closed throttle, which would cause backfiring on the overrun. The shutoff solenoid is activated by a 12V signal from the microswitch; activated when the throttle is closed. The microswitch only gets a 12V signal to switch when the RPM transducer on the engine bay electrical panel says that the engine is above 1500rpm. The RPM transducer hass a 12V DC input power wire, a signal wire from the distributor points (12V DC square wave), a ground wire, and has a 12V DC output wire to the microswitch.
A common problem is bad solder joints or broken wire legs on transistors in these old RPM transducers. If the RPM transducer is bad, or the car is off, there will be no signal to the microswitch so the microswitch cannot do anything, and neither can the solenoid. There will be no continuity across the switch if the microswitch is open (if the throttle lever is not touching the switch).
I think the terminology you have on your diagram is different from the colloquial terms used here on the board. Maybe my explaination can help clarify something.
