Cruise Control Systems: Description
A main switch is used to activate the cruise control system. The main switch is located on the stalk on right side of steering column on MR2 and RWD Corolla, and on instrument panel on all other models. A control switch, with "SET/COAST" and "ACCEL/RESUME" settings, is used to set desired speed. The control switch is mounted in steering wheel pad on Celica and Supra, and is mounted on a stalk on right side of steering column on all other models. System is computer controlled on all models. System will not operate at speeds below 25 MPH on all models.
The cruise control computer on all models has diagnostic capabilities. The diagnostics vary between models. Some models employ "Type A" indicator codes. "Type A" indicator codes verify that cruise control system is functioning properly. All models employ "Type B" indicator codes. "Type B" indicator codes signal malfunctions within the cruise control system.