I just researched why neither my Cold timing, or cold idle advance were working and found the temp. sensor for them on the pass side front of the head was unplugged. Fortunatly for me both the CTA, and CIA work.
Get out your test light and check the connection at the CTA when the truck is cold, turn the key to run, then check to see if you have power to the CTA with the test light. No light (power) look to see if u might have a loose connection at the sensor. Might just need a new temp sensor, or some cleaning.
Hope that helped ya out!
Oh yeah, the CIA wont push the throttle lever out, so yeah, ya gotta step on the peddle before ya start it for the plunger to activate and hold the throttle lever out.