Set/Accel Switch (X166)

To set a cruise speed, the Cruise Control Switch (X115) must be in 1 and vehicle speed MUST exceed 28 mph (45 km/h). When the SET/ACCEL Switch (X166) is depressed under these conditions. voltage from Fuse F2 is applied to terminal 2 of the Cruise Control ECU (Z121) through the closed Cruise Control Switch (X115) and SET/ACCEL Switch (X166) causing the vacuum pump to operate. When the SET/ACCEL Switch (X166) is released, voltage is removed from terminal 2 signalling the ECU to set the speed.