Sorry Jim, After rereading my post, I can see where I left room for confusion.

The "unit" I refer to is indeed the throttle actuator. The ECU module I refer to is pin #8, HFM/SFI module. (I keep a printout of a thread from cdanschwartz with all the DTC's listed. The printout refers to pin 8 as "ECU"--probably should be "HFM/SFI")

When I originally went through all this about a year ago, I was (and still am) very much in a learning mode........

Lebstyle:

The throttle return spring is located on the aft side of the throttle actuator. It is accessible by removing the black air cross over tube, the rubber air tube that sits on top of the throttle actuator, and the variable intake valve that sits in the middle of the black plastic intake manifold. To remove the variable intake valve you have to remove the four rubber plugs to expose four allen head bolts.....

By the way, does your cruise control work?