Jack, if the light comes on the fuse is good. In 91 it was fused through the accessory circuit.
One question that hasn't been asked is if it is after market. Most Corollas of that vintage didn't have cruise. With no fuse listed it has to be an after market.
The most common cause is a vacuum line leak to the cruise servo, the vacuum servo or a bad switch in the stalk. There is also a beaded chain that accuates the throttle. If there is too much slack, it will cause the problem.
The processor doesn't enter into the circuit.
Remember, basics before computers.
Let me know
Monday, December 18th, 2006 AT 1:44 PM