Steve,thanks for the reply.Yes the ASR light comes on when key is in ON position and goes OFF when engine is started.So I presume the system is passing the self test.To further trouble shoot this problem,I removed the fixed rod from the throttle actuator and connected it between the throttle crank and the throttle plate ,thereby creating a purlely mechanical linkage between the accelerator pedal and the throttle plate.I have driven the car in this configuration for some time now with the following observations:when on snow,the(!) light comes on and system applies rear brakes to reduce wheel spin.When wheel spin is reduced the (!) light goes out.This seems like normal SYSTEM operation, just no throttle reduction (throttle actuator is mechanically disconnected)The system will reduce throttle inputs when the actuator is connected.My problem is the actuator is only rotating about 50 degrees when it should be rotating about 90 degrees.The tech I talked to said since this is such an early system,there's no codes stored and must be diagnosed with a socket box tester ,harness adapter and VOM. Any help with this would be really appreciated! Thanks, Dan